Rain cloud experiment
Physics on fingers
@physicsonfingers
Physics is much simpler and more interesting than you think
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Physics on fingers (English)
Welcome to Physics on fingers! Have you ever wanted to learn more about the fascinating world of physics in a simple and engaging way? Well, look no further because this Telegram channel is here to make physics much simpler and more interesting than you ever thought possible. Whether you're a student looking to improve your understanding of physics concepts or simply someone who is curious about how the world works, Physics on fingers has something for everyone.
From fun experiments and mind-bending theories to practical applications and real-world examples, this channel covers it all. You'll find a variety of posts that will not only educate you but also entertain you along the way. Join our growing community of physics enthusiasts and let's explore the wonders of the universe together!
Who is Physics on fingers? We are a group of passionate individuals who believe that physics doesn't have to be intimidating or boring. Our goal is to break down complex concepts into bite-sized pieces that are easy to digest and fun to learn. What is Physics on fingers? It's your go-to source for all things physics-related, whether you're a beginner or an expert. Our channel is designed to make learning physics an enjoyable experience for everyone, regardless of your background or knowledge level.
So, what are you waiting for? Join Physics on fingers today and start your journey into the captivating world of physics. Let's unravel the mysteries of the universe, one finger at a time! Don't forget to check out our ads for more exciting opportunities and consider donating to support our channel's growth. Together, we can make physics more accessible and fascinating for everyone. See you on the other side of the equation!
Physics on fingers
14 Jan, 10:00
Visual demonstration of the Rebinder Effect - the facilitation of dispersion by adsorption ๐
Physics on fingers
11 Jan, 19:00
What happens if you try to unscrew a handle in weightlessness
Physics on fingers
11 Jan, 13:00
According to the laws of physics, a doughnut-shaped planet may indeed exist somewhere in the universe
Physics on fingers
11 Jan, 10:00
Shukuro Manabe and Klaus Hasselmann received half the prize for their work on physical modeling of the Earth's climate and predicting global warming. And Giorgio Parisi received the other half for his discovery of the connection between disorder and fluctuations in physical systems.
Physics on fingers
09 Jan, 13:00
Aesthetics through science
Prototype glass faucet that creates a whirlpool when you open the faucet.
Prototype glass faucet that creates a whirlpool when you open the faucet.
Physics on fingers
08 Jan, 19:00
Rather simple experiment demonstrating the effect of temperature on the expansion and contraction of gases ๐
Physics on fingers
05 Jan, 15:31
Devil's cracker
Powdered sulfur (S) and zinc (Zn) interact violently. This causes a puff of smoke and a bright yellow-green glow.
Powdered sulfur (S) and zinc (Zn) interact violently. This causes a puff of smoke and a bright yellow-green glow.
Physics on fingers
04 Jan, 10:00
Dangerous Triiodine Nitride
Triiodine nitride looks like a lump of dirt, but appearances can be deceptive: the material is so unstable that a light touch is enough to cause an explosion.
Triiodine nitride looks like a lump of dirt, but appearances can be deceptive: the material is so unstable that a light touch is enough to cause an explosion.
Physics on fingers
02 Jan, 19:00
Shot in 1945. Physicist Harold Agnew is holding a 6 kg plutonium nucleus for the heart of the atomic bomb "Fat Man".
It caused about 80,000 deaths in Nagasaki, Japan
It caused about 80,000 deaths in Nagasaki, Japan
Physics on fingers
02 Jan, 10:00
๐คฏ For the first time in history, scientists watched a star explode - they followed it for 130 days before it exploded
Physics on fingers
31 Dec, 19:00
Thermonuclear reactor in China heated up five times more than the Sun
The ultimate goal of the project is to generate almost limitless clean energy, mimicking the natural reactions that take place inside stars. The process requires no fossil fuels and leaves no hazardous waste.
The ultimate goal of the project is to generate almost limitless clean energy, mimicking the natural reactions that take place inside stars. The process requires no fossil fuels and leaves no hazardous waste.
Physics on fingers
31 Dec, 10:00
๐กExperiment! Resonant frequency at a single oscillation frequency
๐ Recently young scientists from Novosibirsk started to use acoustic resonance, in finding defects in pipeline structures and bridge structures! By analyzing the noise (frequency), they can tell where there are certain problems.
๐ Recently young scientists from Novosibirsk started to use acoustic resonance, in finding defects in pipeline structures and bridge structures! By analyzing the noise (frequency), they can tell where there are certain problems.
Physics on fingers
30 Dec, 19:00
Rare shot of a thunderstorm during the eruption of the Calbuco volcano in Chile
This natural phenomenon is called a "dirty thunderstorm. Such lightning occurs when negatively charged ash particles and positively charged volcanic gases collide
This natural phenomenon is called a "dirty thunderstorm. Such lightning occurs when negatively charged ash particles and positively charged volcanic gases collide
Physics on fingers
24 Dec, 10:00
Some materials have a shape memory effect - after deformation, they return to their original shape when heated
This property is due to superelasticity. Titanium nickelide, for example, has this quality. Such materials are very practical and are used in different spheres from space to medicine.
For example, they are used to mount self-dissolving antennas, make special filters for insertion into the bloodstream, and even make eyeglass frames that do not allow the lenses to slip out.
This property is due to superelasticity. Titanium nickelide, for example, has this quality. Such materials are very practical and are used in different spheres from space to medicine.
For example, they are used to mount self-dissolving antennas, make special filters for insertion into the bloodstream, and even make eyeglass frames that do not allow the lenses to slip out.
Physics on fingers
23 Dec, 19:00
Largest radio antenna telescope
The largest radioantenna telescope in the world is RATAN-600, located in Russia, in Karachay-Cherkessia, near the village of Zelenchukskaya, at an altitude of 970 meters from sea level.
RATAN stands for "Radio Astronomical Telescope of the Academy of Sciences". Its main mirror has a diameter of 576m. It is highly sensitive and multifrequency.
The largest radioantenna telescope in the world is RATAN-600, located in Russia, in Karachay-Cherkessia, near the village of Zelenchukskaya, at an altitude of 970 meters from sea level.
RATAN stands for "Radio Astronomical Telescope of the Academy of Sciences". Its main mirror has a diameter of 576m. It is highly sensitive and multifrequency.
Physics on fingers
23 Dec, 13:00
If you very carefully place a needle or paper clip on the surface of the water, it can hold there
Normally, for an object not to sink, its density must be less than or equal to that of water.
The density of metal, of course, is greater than the density of water, but the needle does not sink only because of the surface tension forces, which are stronger than gravity.
Because of them, the liquid behaves as if it were covered by a film. The forces of adhesion in this film resist the forces of tearing, and the metal needle remains on the surface.
Sooner or later it will get wet and sink, but this can be avoided by lubricating it with grease.
Normally, for an object not to sink, its density must be less than or equal to that of water.
The density of metal, of course, is greater than the density of water, but the needle does not sink only because of the surface tension forces, which are stronger than gravity.
Because of them, the liquid behaves as if it were covered by a film. The forces of adhesion in this film resist the forces of tearing, and the metal needle remains on the surface.
Sooner or later it will get wet and sink, but this can be avoided by lubricating it with grease.
Physics on fingers
22 Dec, 19:00
Here's what the process of freezing a soap bubble really looks like
Physics on fingers
22 Dec, 13:00
Amazing physics of magnetic levitation
This type of levitation uses a control system with adjustable electromagnet coils in a feedback loop with Hall effect sensors that allow the magnetic field to be finely tuned to precisely balance the force of gravity.
This type of levitation uses a control system with adjustable electromagnet coils in a feedback loop with Hall effect sensors that allow the magnetic field to be finely tuned to precisely balance the force of gravity.
Physics on fingers
22 Dec, 10:18
Salted cucumbers emit a yellow light, thanks to their high sodium content! A simple way to show that living things also conduct electricity โก๏ธ
Physics on fingers
21 Dec, 10:00
This video demonstrates the perfect combination of magnetic levitation and electromagnetic induction
Physics on fingers
17 Nov, 19:00
An interesting way of visualising music
The dance of a ferromagnetic liquid with a sound frequency.
The dance of a ferromagnetic liquid with a sound frequency.
Physics on fingers
17 Nov, 13:00
Can one nail hold 12?
Knowing the physics, you can do all sorts of things. Let's see how to balance this construction.
Knowing the physics, you can do all sorts of things. Let's see how to balance this construction.
Physics on fingers
16 Nov, 13:00
Mixing 200 kilograms of leavening agent and 450 liters of water
Physics on fingers
15 Nov, 19:00
A favorite physics toy made with your own hands.
Neodymium magnets in the shape of a disk create a static magnetic field for this motor and become the wheels of a very simple vehicle with a AAA battery as a power source. ๐
Neodymium magnets in the shape of a disk create a static magnetic field for this motor and become the wheels of a very simple vehicle with a AAA battery as a power source. ๐
Physics on fingers
14 Nov, 19:00
Cold plasma in a syringe
By reducing pressure and ionizing gases, cold plasma can be drawn into the syringe and even touched with the hands.
By reducing pressure and ionizing gases, cold plasma can be drawn into the syringe and even touched with the hands.
Physics on fingers
14 Nov, 10:00
Creating a masterpiece involving electricity and glass. ๐ฅโก๏ธ
Physics on fingers
13 Nov, 19:00
An incredible lenticular raster capable of blurring the image in one direction.
Physics on fingers
13 Nov, 10:00
The most advanced humanoid robot Ameca, built on an artificial intelligence platform with a human-robot base.
Now this is starting to get scary
Now this is starting to get scary
Physics on fingers
12 Nov, 19:00
This kind of pendulum is a simple physical system that exhibits a variety of dynamic behavior with significant dependence on initial conditions.
Physics on fingers
12 Nov, 13:00
Physicist Lester Hendershot created generators with no visible source of energy and he was immediately accused of quackery.
Lester took the public's reaction into account and by 1960, in addition to two new generators, gave out 56 pages of documentation explaining to humanitarians that the Earth is a giant magnet, which every day can give mankind hundreds of billions of volts.
After the public documentation of the devices, explaining how to use the "power of the Earth" for free and efficiently, a beautiful thing begins: Dr. Hochstetter bought the invention and died suddenly in a train wreck. The only passenger who died during the accident.
A couple of years later, Hendershot is found dead in his house, and it is impossible to say whether it was suicide or something else, because for some reason an investigation into the cause of death was never conducted. In fact, as in the case of other deaths of inventors engaged in the production of free energy.
Lester took the public's reaction into account and by 1960, in addition to two new generators, gave out 56 pages of documentation explaining to humanitarians that the Earth is a giant magnet, which every day can give mankind hundreds of billions of volts.
After the public documentation of the devices, explaining how to use the "power of the Earth" for free and efficiently, a beautiful thing begins: Dr. Hochstetter bought the invention and died suddenly in a train wreck. The only passenger who died during the accident.
A couple of years later, Hendershot is found dead in his house, and it is impossible to say whether it was suicide or something else, because for some reason an investigation into the cause of death was never conducted. In fact, as in the case of other deaths of inventors engaged in the production of free energy.
Physics on fingers
11 Nov, 10:00
Each ball flies in a straight line, but ends up hitting a fantastic illusion
Physics on fingers
10 Nov, 13:00
Experiment with electric arc and candles
Fire is also electricity, only it has a higher frequency.
And the shell around the ions is gas, which raises the clot of closed particles upwards.
Fire is also electricity, only it has a higher frequency.
And the shell around the ions is gas, which raises the clot of closed particles upwards.
Physics on fingers
10 Nov, 10:00
Demonstration of the strength of diamond ๐
The main distinguishing features of diamond are the highest hardness (and at the same time brittleness) among minerals, the highest thermal conductivity among all solids, a large refractive index and high dispersion.
The main distinguishing features of diamond are the highest hardness (and at the same time brittleness) among minerals, the highest thermal conductivity among all solids, a large refractive index and high dispersion.
Physics on fingers
09 Nov, 19:00
Using an interactive whiteboard in a chemistry class in China
Physics on fingers
09 Nov, 13:00
Self-supporting rope loop
A very simple to realise and spectacular experience based on the maintenance of the individual sections of the loop of its rectilinear motion, under the action of acceleration.
A very simple to realise and spectacular experience based on the maintenance of the individual sections of the loop of its rectilinear motion, under the action of acceleration.
Physics on fingers
09 Nov, 10:00
A non-Newtonian fluid is a fluid whose viscosity depends on the velocity gradient. Usually such fluids are highly inhomogeneous and consist of large molecules forming complex spatial structures.
Physics on fingers
08 Nov, 13:00
Sympathetic resonance ๐ค
This is a principle of physics that was discovered in 1665 by Dutch physicist Christian Huygens. Sympathetic resonance can be defined as the synchronisation of organisms to an external rhythm, i.e. the tendency of two vibrating bodies to tend to phase so that they vibrate in harmony.
During his research with pendulum clocks, Huygens found that when he placed two clocks on the wall next to each other and swung the pendulums at different rates, they eventually began to swing with the same rhythm-their frequency matched. He realised that this concept didn't just apply to pendulum clocks, but as it turned out, was a basic law of physics.
The principle is universal and appears not only in nature or mechanical pendulum clocks, but also in the principles of chemistry, pharmacology, biology, medicine, psychology, sociology and many other fields.
This is a principle of physics that was discovered in 1665 by Dutch physicist Christian Huygens. Sympathetic resonance can be defined as the synchronisation of organisms to an external rhythm, i.e. the tendency of two vibrating bodies to tend to phase so that they vibrate in harmony.
During his research with pendulum clocks, Huygens found that when he placed two clocks on the wall next to each other and swung the pendulums at different rates, they eventually began to swing with the same rhythm-their frequency matched. He realised that this concept didn't just apply to pendulum clocks, but as it turned out, was a basic law of physics.
The principle is universal and appears not only in nature or mechanical pendulum clocks, but also in the principles of chemistry, pharmacology, biology, medicine, psychology, sociology and many other fields.
Physics on fingers
08 Nov, 10:00
A worker shot a spectacular video showing the speed of the shock wave propagating away from the epicentre after the explosion ๐ฅ
Physics on fingers
07 Nov, 19:00
The minimal mass of air in the mountains
The mass of one cubic metre of air near the surface of the earth is about 1.29 kilograms, but at an altitude of 11-12 kilometres it is only 319 grams!
The mass of one cubic metre of air near the surface of the earth is about 1.29 kilograms, but at an altitude of 11-12 kilometres it is only 319 grams!
Physics on fingers
07 Nov, 13:00
What happens when the force of elasticity and Archimedes' force are combined
Physics on fingers
07 Nov, 10:00
Why does the compass hand always point north? ๐งญ
Because the Earth is a magnet, it has magnetic poles and a magnetic field. If we imagine that we have an opportunity to conduct an experiment with iron filings on the scale of the whole planet, the filings would be most densely gathered near the poles, and the planet itself would be surrounded by beautiful diverging โsawdustโ circles....
The compass hand is also a magnet, and it too has poles. Under the influence of the Earth's magnetic field, it is sure to โsynchroniseโ with it and indicate where north and south are along the meridian line.
Because the Earth is a magnet, it has magnetic poles and a magnetic field. If we imagine that we have an opportunity to conduct an experiment with iron filings on the scale of the whole planet, the filings would be most densely gathered near the poles, and the planet itself would be surrounded by beautiful diverging โsawdustโ circles....
The compass hand is also a magnet, and it too has poles. Under the influence of the Earth's magnetic field, it is sure to โsynchroniseโ with it and indicate where north and south are along the meridian line.
Physics on fingers
06 Nov, 13:00
What happens to a tree branch on which several birds have perched?
It sags. Another bird, another bird, another bird, another bird, another bird... The branch bends more and more under their weight. But then the whole flock flies off. And the branch immediately returns to its original position. It's being pulled down by the force of elasticity.
In physics, elasticity is the property of a material to assume its original shape when deformed. The force of elasticity preserves the integrity of the object to which some action is applied at the moment.
It sags. Another bird, another bird, another bird, another bird, another bird... The branch bends more and more under their weight. But then the whole flock flies off. And the branch immediately returns to its original position. It's being pulled down by the force of elasticity.
In physics, elasticity is the property of a material to assume its original shape when deformed. The force of elasticity preserves the integrity of the object to which some action is applied at the moment.
Physics on fingers
06 Nov, 10:00
The phenomenon of polarisation has given rise to many interesting ideas
It is used to produce various optical effects. Its use in IMAX technology for 3D cinema is well known.
Polarisation in special glasses is used here to separate images that are intended for the right and left eye.
It is used to produce various optical effects. Its use in IMAX technology for 3D cinema is well known.
Polarisation in special glasses is used here to separate images that are intended for the right and left eye.
Physics on fingers
05 Nov, 19:00
Visualisation of ultrasonic waves. Not gravitational ones ๐
Physics on fingers
05 Nov, 13:00
Invisible physics ๐ถโ๐ซ๏ธ
The glass bar and ball, are made of a material whose refractive index is the same as that of water. So they become invisible.
With the help of such a ball, the Goldberg machine is actuated in the video, and all its actions seem to be independen
The glass bar and ball, are made of a material whose refractive index is the same as that of water. So they become invisible.
With the help of such a ball, the Goldberg machine is actuated in the video, and all its actions seem to be independen
Physics on fingers
05 Nov, 10:00
The Schlieren method
This is probably the only way to observe convection live. In general, this method allows you to see any change in density in transparent media.
This is probably the only way to observe convection live. In general, this method allows you to see any change in density in transparent media.
Physics on fingers
04 Nov, 19:00
In physics, a spinning ball is called the Magnus effect
It occurs when a rotating body is streamlined by a stream of liquid or gas. It is the rotation of the ball at impact, which is perfectly visible on the gif, allows the ball to fly along such a twisted trajectory.
It occurs when a rotating body is streamlined by a stream of liquid or gas. It is the rotation of the ball at impact, which is perfectly visible on the gif, allows the ball to fly along such a twisted trajectory.
Physics on fingers
04 Nov, 13:00
Such kind of beauty is obtained by pouring ferromagnetic liquid (it is a highly polarising liquid containing Ferro magnetic nanoparticles in the presence of a magnetic field) on the screw โ๐ป
Physics on fingers
03 Nov, 19:00
How are elementary particles studied?
The main methods of studying elementary particles are as follows: the target nucleus is bombarded with a powerful beam of protons or electrons.
The collisions produce fragments of the nucleus that fly off in different directions. This is what is monitored.
The main methods of studying elementary particles are as follows: the target nucleus is bombarded with a powerful beam of protons or electrons.
The collisions produce fragments of the nucleus that fly off in different directions. This is what is monitored.
Physics on fingers
03 Nov, 13:00
The Meissner effect
An ordinary magnet can be made to fly and float in the air using superconductivity. To do this, the superconducting material is cooled with liquid nitrogen. Then a magnet is placed on the surface of the superconductor.
Since, according to the Meissner effect, the magnetic field is forced out of the volume of the superconductor, the magnet rises up and floats until the superconductor is out of the superconducting phase.
An ordinary magnet can be made to fly and float in the air using superconductivity. To do this, the superconducting material is cooled with liquid nitrogen. Then a magnet is placed on the surface of the superconductor.
Since, according to the Meissner effect, the magnetic field is forced out of the volume of the superconductor, the magnet rises up and floats until the superconductor is out of the superconducting phase.
Physics on fingers
03 Nov, 10:00
A bunny is a speck of light that is produced when a ray is reflected from a mirror
For example, a ray that is reflected from a mirror with a diameter of 5 cm is visible at a distance of 10-30 km. Therefore, a beam reflected, for example, from a telescopic sight or binoculars, can reveal the location of the observer. And in combat conditions, optical devices are protected with black tubes 1520 cm long made of metal or cardboard.
For example, a ray that is reflected from a mirror with a diameter of 5 cm is visible at a distance of 10-30 km. Therefore, a beam reflected, for example, from a telescopic sight or binoculars, can reveal the location of the observer. And in combat conditions, optical devices are protected with black tubes 1520 cm long made of metal or cardboard.
Physics on fingers
02 Nov, 13:00
Forces affecting the foundation ๐ช๐ป
The soil in which the foundation of a building is placed is not in motion, but certain forces act on it. First of all, it is pressurised by the building itself. The soil can counteract the gravity of the building by about 2-3 kg/cm2.
The resistance of the ground is counteracted. Thus the action and the counteraction compress the foundation from above and below.
It remains immobile, but if the safety margin is insufficient, the foundation will collapse. Therefore, it must be taken into account during design and construction.
The soil in which the foundation of a building is placed is not in motion, but certain forces act on it. First of all, it is pressurised by the building itself. The soil can counteract the gravity of the building by about 2-3 kg/cm2.
The resistance of the ground is counteracted. Thus the action and the counteraction compress the foundation from above and below.
It remains immobile, but if the safety margin is insufficient, the foundation will collapse. Therefore, it must be taken into account during design and construction.
Physics on fingers
02 Nov, 10:00
One of the problems with the structure of galaxies is dark matter
It only manifests itself in gravitational interaction. Dark matter can make up to 90 per cent of the total mass of a galaxy, or it can be completely absent.
This became clear when it was realised that the total apparent mass of galaxies, which consists of the mass of stars and interstellar gas, cannot explain the rotational velocity of their outer regions if dark matter is not taken into account.
In addition to dark matter, there is also the hypothesis of dark energy.
It only manifests itself in gravitational interaction. Dark matter can make up to 90 per cent of the total mass of a galaxy, or it can be completely absent.
This became clear when it was realised that the total apparent mass of galaxies, which consists of the mass of stars and interstellar gas, cannot explain the rotational velocity of their outer regions if dark matter is not taken into account.
In addition to dark matter, there is also the hypothesis of dark energy.
Physics on fingers
31 Oct, 19:00
Supermassive black holes
At the centre of our Milky Way is an extremely massive black hole that is millions of times heavier than the Sun.
Such supermassive black holes have also been found at the centres of other galaxies. They were able to calculate them by observing the movement of interstellar gas.
It is assumed that the centre of each galaxy is a giant black hole.
At the centre of our Milky Way is an extremely massive black hole that is millions of times heavier than the Sun.
Such supermassive black holes have also been found at the centres of other galaxies. They were able to calculate them by observing the movement of interstellar gas.
It is assumed that the centre of each galaxy is a giant black hole.
Physics on fingers
31 Oct, 13:00
Tides and pencils
There is a mutual attraction between the Earth and the Moon. The Earth holds the Moon in its orbit, and the Moon's attraction manifests itself in the tides. But the law of universal gravitation is true for all bodies.
Two pencils also attract each other. However, their masses are so small that when substituted into the formula for universal gravitation, the result is a very small value.
No deviations from the law of universal gravitation were found at very small distances, from 55 ยตm to 9.53 mm.
There is a mutual attraction between the Earth and the Moon. The Earth holds the Moon in its orbit, and the Moon's attraction manifests itself in the tides. But the law of universal gravitation is true for all bodies.
Two pencils also attract each other. However, their masses are so small that when substituted into the formula for universal gravitation, the result is a very small value.
No deviations from the law of universal gravitation were found at very small distances, from 55 ยตm to 9.53 mm.
Physics on fingers
31 Oct, 10:00
Invisible danger
Hot objects are harmful to vision because infrared radiation causes the mucous membrane of the eye to dry out.
This is most dangerous if the radiation is not accompanied by visible light.
Special protective goggles should therefore be worn when handling such heated surfaces.
Hot objects are harmful to vision because infrared radiation causes the mucous membrane of the eye to dry out.
This is most dangerous if the radiation is not accompanied by visible light.
Special protective goggles should therefore be worn when handling such heated surfaces.
Physics on fingers
31 Oct, 06:22
๐ AI news channel is now on Telegram!
Keep pace with the cutting-edge developments and breakthroughs in Artificial Intelligence from around the globe, delivered instantly.
Connect with the future of technology now ๐๐ป @AI
Keep pace with the cutting-edge developments and breakthroughs in Artificial Intelligence from around the globe, delivered instantly.
Connect with the future of technology now ๐๐ป @AI
Physics on fingers
30 Oct, 13:00
Working principle of a sewing machine
The operation of the mechanism of a sewing machine is shown in detail. Two threads: one in the needle and fed from the top, the other in the bobbin at the bottom and fed from there.
The shuttle mechanism catches the upper thread, pulls it out of the needle, thereby making a loop that wraps around the lower thread; the mechanism, pushing the fabric forward, changes the needle entry point and forms a stitch.
The operation of the mechanism of a sewing machine is shown in detail. Two threads: one in the needle and fed from the top, the other in the bobbin at the bottom and fed from there.
The shuttle mechanism catches the upper thread, pulls it out of the needle, thereby making a loop that wraps around the lower thread; the mechanism, pushing the fabric forward, changes the needle entry point and forms a stitch.
Physics on fingers
30 Oct, 11:00
๐ฅ๐ฅ๐ฅSharing with you a great channel with incredible life hacks that actually works ๐คฉ
Join us and make you life so much easier๐๐๐
Join us and make you life so much easier๐๐๐
Physics on fingers
30 Oct, 06:03
5 places on the planet you can't get to for any money.
1) Morgan Island. It's home to about 5,000 monkeys. All of them are carriers of herpes. People are forbidden to appear on the island to avoid contracting the disease.
2) Lakso Cave. On the walls of the cave found drawings that are 17 thousand years old. The presence of people in the cave led to the fact that the exhaled carbon dioxide began to dissolve the images
READ MORE
1) Morgan Island. It's home to about 5,000 monkeys. All of them are carriers of herpes. People are forbidden to appear on the island to avoid contracting the disease.
2) Lakso Cave. On the walls of the cave found drawings that are 17 thousand years old. The presence of people in the cave led to the fact that the exhaled carbon dioxide began to dissolve the images
READ MORE
Physics on fingers
29 Oct, 19:00
Sulphur hexafluoride is much denser than air
Sulphur hexafluoride (also elegas or sulphur hexafluoride, SF6) is an inorganic substance, a heavy gas under normal conditions, 5 times heavier than air.
Sulphur hexafluoride (also elegas or sulphur hexafluoride, SF6) is an inorganic substance, a heavy gas under normal conditions, 5 times heavier than air.
Physics on fingers
29 Oct, 13:00
Dangerous triiodine nitride
Triiodium nitride looks like a lump of dirt, but appearances are deceiving: this material is so unstable that a light touch is enough to cause an explosion.
Triiodium nitride looks like a lump of dirt, but appearances are deceiving: this material is so unstable that a light touch is enough to cause an explosion.
Physics on fingers
29 Oct, 10:00
Metallic sodium and water
Metallic sodium is one of the most active elements in the periodic table, and when it comes into contact with water, it releases a large amount of energy in a short period of time, causing it to ignite and, more often than not, explode.
Metallic sodium is one of the most active elements in the periodic table, and when it comes into contact with water, it releases a large amount of energy in a short period of time, causing it to ignite and, more often than not, explode.
Physics on fingers
28 Oct, 19:00
Physicists and gold
Alchemists, who sought to obtain gold for many centuries, never succeeded. It is indeed impossible to obtain gold from other metals by chemical methods.
With the help of physics, however, it has been possible. In 1947, physicists measured the effects that occur when mercury nuclei absorb extra neutrons. They did not try to get gold, but they still got it - about 35 ยตg.
But there is no point in producing this metal in this way - this method is too expensive, it is much cheaper to extract gold from the poorest ores.
Alchemists, who sought to obtain gold for many centuries, never succeeded. It is indeed impossible to obtain gold from other metals by chemical methods.
With the help of physics, however, it has been possible. In 1947, physicists measured the effects that occur when mercury nuclei absorb extra neutrons. They did not try to get gold, but they still got it - about 35 ยตg.
But there is no point in producing this metal in this way - this method is too expensive, it is much cheaper to extract gold from the poorest ores.
Physics on fingers
28 Oct, 13:00
Gravity and mountains ๐
Gravity determines the height of elevation on the planet. Therefore, Earth's mountains cannot be higher than 15 kilometres.
Gravity determines the height of elevation on the planet. Therefore, Earth's mountains cannot be higher than 15 kilometres.
Physics on fingers
27 Oct, 19:00
Without mercury
Although mercury barometers are accurate and suitable for serious research, another type of pressure measuring device is used in everyday life - the aneroid barometer.
โAneroidโ means โwithout waterโ in Greek. It shows the atmospheric pressure, which acts on a thin-walled corrugated metal box. A rarefaction is created in it.
When the atmospheric pressure increases, the box shrinks; when it decreases, it expands and acts on the spring that is attached to it.
Although mercury barometers are accurate and suitable for serious research, another type of pressure measuring device is used in everyday life - the aneroid barometer.
โAneroidโ means โwithout waterโ in Greek. It shows the atmospheric pressure, which acts on a thin-walled corrugated metal box. A rarefaction is created in it.
When the atmospheric pressure increases, the box shrinks; when it decreases, it expands and acts on the spring that is attached to it.
Physics on fingers
27 Oct, 12:24
Vavilov-Cherenkov effect can be observed with the naked eye in small nuclear reactorsVavilov-Cherenkov effect can be observed with the naked eye in small nuclear reactors
A nuclear reaction releases fast particles that produce Cherenkov radiation and surround the core of the unit with a bluish glow.
A nuclear reaction releases fast particles that produce Cherenkov radiation and surround the core of the unit with a bluish glow.
Physics on fingers
26 Oct, 10:00
If you carefully place a needle or paper clip on the surface of the water, it can be held there
Usually, for an object not to sink, its density must be less than or equal to that of water.
The density of metal is, of course, greater than the density of water, but the needle does not sink only because of the forces of surface tension, which are stronger than gravity.
They cause the liquid to behave like a film. The cohesive forces in this film resist the tearing forces, and the metal needle remains on the surface.
Sooner or later it will get wet and sink, but this can be avoided by lubricating it with grease.
Usually, for an object not to sink, its density must be less than or equal to that of water.
The density of metal is, of course, greater than the density of water, but the needle does not sink only because of the forces of surface tension, which are stronger than gravity.
They cause the liquid to behave like a film. The cohesive forces in this film resist the tearing forces, and the metal needle remains on the surface.
Sooner or later it will get wet and sink, but this can be avoided by lubricating it with grease.
Physics on fingers
25 Oct, 19:00
Doppler effect
The Doppler effect occurs when the observer (or receiver) is stationary and the source of radiation is moving, or vice versa.
In this case, the frequency and, consequently, the wavelength of the perceived radiation changes.
The Doppler effect occurs when the observer (or receiver) is stationary and the source of radiation is moving, or vice versa.
In this case, the frequency and, consequently, the wavelength of the perceived radiation changes.
Physics on fingers
25 Oct, 13:00
Fragility
There are materials that are not characterised by appreciable plastic deformation and are instantly destroyed by external forces.
This property is called brittleness. Cast iron, ceramics, facing stone, glass, concrete are brittle materials
There are materials that are not characterised by appreciable plastic deformation and are instantly destroyed by external forces.
This property is called brittleness. Cast iron, ceramics, facing stone, glass, concrete are brittle materials
Physics on fingers
25 Oct, 10:00
Strings of musical instruments - violin, guitar, piano - have a basic resonant frequency, which directly depends on the string tension force, its length and weight
By increasing the tension of the string, reducing its thickness and length, you can increase its resonant frequency. If you give a string a brief action - a blow of a hammer or a pluck of the fingers - it will begin to vibrate at all the frequencies that are present in the impulse given to it.
But the frequencies that do not coincide with the resonance frequencies will very quickly fade away, and we will hear only harmonic vibrations, i.e. musical notes.
By increasing the tension of the string, reducing its thickness and length, you can increase its resonant frequency. If you give a string a brief action - a blow of a hammer or a pluck of the fingers - it will begin to vibrate at all the frequencies that are present in the impulse given to it.
But the frequencies that do not coincide with the resonance frequencies will very quickly fade away, and we will hear only harmonic vibrations, i.e. musical notes.
Physics on fingers
24 Oct, 13:00
How to memorise the electrodes?
To remember the processes at the anode and cathode, there are mnemonic rules.
Anode is plus (four letters in each word). The cathode is minus (five letters in each word). At the anode, anions are oxidised (all words start with a vowel letter).
At the cathode, cations are reduced (all words begin with a consonant letter).
To remember the processes at the anode and cathode, there are mnemonic rules.
Anode is plus (four letters in each word). The cathode is minus (five letters in each word). At the anode, anions are oxidised (all words start with a vowel letter).
At the cathode, cations are reduced (all words begin with a consonant letter).
Physics on fingers
23 Oct, 19:00
Titanium nickelide, or nitinol, remembers its shape
If a complex-shaped part made of nitinol is hardened, deformed after cooling down, and then reheated to temperatures above 40ยฐC, its original shape will be restored.
This is due to the fact that nitinol is an intermetallide, i.e. a chemical compound rather than an alloy. When quenched, the mutual arrangement of the atoms is ordered, which causes the shape to be memorised.
If a complex-shaped part made of nitinol is hardened, deformed after cooling down, and then reheated to temperatures above 40ยฐC, its original shape will be restored.
This is due to the fact that nitinol is an intermetallide, i.e. a chemical compound rather than an alloy. When quenched, the mutual arrangement of the atoms is ordered, which causes the shape to be memorised.
Physics on fingers
23 Oct, 13:00
If you add a teaspoon of salt to a glass of water, the volume of water will soon decrease
The molecules of the solvent (water) become more ordered surrounded by dissolved ions and take up less space.
The molecules of the solvent (water) become more ordered surrounded by dissolved ions and take up less space.
Physics on fingers
23 Oct, 10:00
The devil's flapjack ๐ฅ
Powdered sulphur (S) and zinc (Zn) interact violently. Puffs of smoke and a bright yellow-green glow can be observed
Powdered sulphur (S) and zinc (Zn) interact violently. Puffs of smoke and a bright yellow-green glow can be observed
Physics on fingers
22 Oct, 13:00
Does the speed of light change?
The speed of light in various transparent media is less than its speed in vacuum. In water, for example, it is three-quarters of its maximum speed.
This is thought to be because photons are absorbed and re-emitted by particles in the medium.
The speed of light in various transparent media is less than its speed in vacuum. In water, for example, it is three-quarters of its maximum speed.
This is thought to be because photons are absorbed and re-emitted by particles in the medium.
Physics on fingers
21 Oct, 19:00
The speed of sound in different gases
As the temperature of a gas decreases, the speed of sound decreases. Therefore, at 20 ยฐC the speed of sound in air is 342 m/s and at 0 ยฐC it is 331 m/s.
It also depends on the mass of the molecules that make up the gas. Thus, in hydrogen at 0 ยฐC the speed of sound is 1284 m/s, in helium - 965 m/s, and in oxygen - 316 m/s.
As the temperature of a gas decreases, the speed of sound decreases. Therefore, at 20 ยฐC the speed of sound in air is 342 m/s and at 0 ยฐC it is 331 m/s.
It also depends on the mass of the molecules that make up the gas. Thus, in hydrogen at 0 ยฐC the speed of sound is 1284 m/s, in helium - 965 m/s, and in oxygen - 316 m/s.
Physics on fingers
21 Oct, 13:00
Cutting glass underwater
The scissors make a micro-crack, capillary effect completes the process by breaking off pieces of glass. The splitting is due to the cleaving action of the capillary water.
The scissors make a micro-crack, capillary effect completes the process by breaking off pieces of glass. The splitting is due to the cleaving action of the capillary water.
Physics on fingers
21 Oct, 10:00
Saturn Wood
A cleaned plate of galvanised tinplate is immersed in a solution consisting of lead acetate and water.
The surface is covered with small, dark grey, metallic lustre lead crystals, interlocked with each other.
A cleaned plate of galvanised tinplate is immersed in a solution consisting of lead acetate and water.
The surface is covered with small, dark grey, metallic lustre lead crystals, interlocked with each other.
Physics on fingers
21 Oct, 06:44
Our history is already 7532 years old, not 2024 as everyone is used to.
The 5500 years were simply crossed out and forgotten so you wouldn't know your real origins. Didn't know that;
โ ๏ธ Gods were flesh and blood. They lived with humans and were five meters tall or taller.
โ ๏ธ There used to be 3 moons flying over the Earth. Now 2 of them have been destroyed
โ ๏ธ We found the Tower of Babel and what's left of it. It is now completely hidden under a huge layer of earth after a global catastrophe.
Check out the Don't You Know โข ๐ channel and learn interesting facts about our planet, not the nonsense you learned in school.
The 5500 years were simply crossed out and forgotten so you wouldn't know your real origins. Didn't know that;
โ ๏ธ Gods were flesh and blood. They lived with humans and were five meters tall or taller.
โ ๏ธ There used to be 3 moons flying over the Earth. Now 2 of them have been destroyed
โ ๏ธ We found the Tower of Babel and what's left of it. It is now completely hidden under a huge layer of earth after a global catastrophe.
Check out the Don't You Know โข ๐ channel and learn interesting facts about our planet, not the nonsense you learned in school.
Physics on fingers
20 Oct, 19:00
Titanium hydride is the star of fireworks
Used in pyrotechnics to create bright white sparks.
Used in pyrotechnics to create bright white sparks.
Physics on fingers
20 Oct, 13:20
Sodium flowers
A petri dish is filled with ethanol and organic dyes. When metallic sodium is ingested, it reacts with the alcohol to form an alkaline solution that changes the colour of the organic dyes.
A petri dish is filled with ethanol and organic dyes. When metallic sodium is ingested, it reacts with the alcohol to form an alkaline solution that changes the colour of the organic dyes.
Physics on fingers
19 Oct, 19:00
In industry, the forces of surface tension are used quite widely
For example, they are indispensable if it is necessary to cast metal parts of the correct spherical shape. Molten metal is poured from a sufficient height and its drops are allowed to solidify on the fly. These spheres have time to take the correct shape and then fall into the receiving container.
For example, they are indispensable if it is necessary to cast metal parts of the correct spherical shape. Molten metal is poured from a sufficient height and its drops are allowed to solidify on the fly. These spheres have time to take the correct shape and then fall into the receiving container.
Physics on fingers
19 Oct, 13:00
Reactive motion is based on the law of conservation of momentum
It arises when a part of a body is separated from it at a certain speed.
Thus, if you inflate a rubber balloon, both its velocity and the velocity of the air will be zero, and the momentum will also be zero.
If you release the balloon without tying it, the air will start to escape from it in one direction, but the balloon itself will fly in the other direction. Rockets and firearms are organised on the same principle.
It arises when a part of a body is separated from it at a certain speed.
Thus, if you inflate a rubber balloon, both its velocity and the velocity of the air will be zero, and the momentum will also be zero.
If you release the balloon without tying it, the air will start to escape from it in one direction, but the balloon itself will fly in the other direction. Rockets and firearms are organised on the same principle.
Physics on fingers
19 Oct, 10:00
Fire โ hydrogen
Hydrogen gas is lighter than air and can be ignited by a flame or spark, resulting in a spectacular explosion.
This is why helium rather than hydrogen is now more commonly used to fill balloons.
Hydrogen gas is lighter than air and can be ignited by a flame or spark, resulting in a spectacular explosion.
This is why helium rather than hydrogen is now more commonly used to fill balloons.
Physics on fingers
18 Oct, 19:00
Marangoni effect
If you drop soap solution into milk or water, you will get this beautiful effect.
It is explained by the fact that water and soap have different surface tension and the liquid rushes to the place where it is higher.
If you drop soap solution into milk or water, you will get this beautiful effect.
It is explained by the fact that water and soap have different surface tension and the liquid rushes to the place where it is higher.
Physics on fingers
18 Oct, 10:00
Three physicists conducted a series of experiments that unravelled one of the internet's strangest mysteries - why two halves of grapes in the microwave create such a firework show.
The grapes direct microwave energy to the same spot, creating an electromagnetic field between them. As this electromagnetic point builds up energy, it overloads nearby electrolytes, causing a jet of plasma to rise into the air.
The grapes direct microwave energy to the same spot, creating an electromagnetic field between them. As this electromagnetic point builds up energy, it overloads nearby electrolytes, causing a jet of plasma to rise into the air.
Physics on fingers
17 Oct, 19:00
A Klein bottle is a certain non-orientable surface of the first kind, i.e. a surface which has no distinction between inner and outer sides, and which thus confines itself to zero volume in space
Physics on fingers
17 Oct, 13:00
A visual demonstration of a waterjet cutting system in operation ๐ค
Water compressed by a high-pressure pump, one of the main components of the system, passes through a water nozzle to form a jet with a diameter of 0.2-0.35 mm into a mixing chamber.
In the mixing chamber, water is mixed with abrasive (garnet sand), and then it passes through a second, carbide or diamond nozzle with an internal diameter of 0.6-1.2 mm.
From this nozzle the jet of water with abrasive leaves at a speed of about 1000 m/s and hits the surface of the material to be cut.
Water compressed by a high-pressure pump, one of the main components of the system, passes through a water nozzle to form a jet with a diameter of 0.2-0.35 mm into a mixing chamber.
In the mixing chamber, water is mixed with abrasive (garnet sand), and then it passes through a second, carbide or diamond nozzle with an internal diameter of 0.6-1.2 mm.
From this nozzle the jet of water with abrasive leaves at a speed of about 1000 m/s and hits the surface of the material to be cut.
Physics on fingers
17 Oct, 10:00
Triboluminescence is the glow of substances when they break down. It can occur when a crystalline body splits.
To observe triboluminescence you need: caramel candy, a hammer and a camera that shoots 10,000 frames per second.
To observe triboluminescence you need: caramel candy, a hammer and a camera that shoots 10,000 frames per second.
Physics on fingers
16 Oct, 19:00
Deionised water ๐ฆ
To make such a bridge between glasses, they need to be filled with water, but not plain, but deionised water. This is very pure water, which contains practically no impurities. Its resistivity is 18 megohm-cm and its purity is 99.99999991 %.
If electrodes are placed in the beakers and a high voltage is applied, the deionised water forms a stable cylindrical bridge between the two beakers, as we can see in the gif.
To make such a bridge between glasses, they need to be filled with water, but not plain, but deionised water. This is very pure water, which contains practically no impurities. Its resistivity is 18 megohm-cm and its purity is 99.99999991 %.
If electrodes are placed in the beakers and a high voltage is applied, the deionised water forms a stable cylindrical bridge between the two beakers, as we can see in the gif.
Physics on fingers
16 Oct, 13:00
These are the kind of miracles you can do if you know what the Leidenfrost effect is
The little trick here is a fluted surface that is heated much higher than the boiling point of the liquid. This is when the effect, named after Johann Gottlob Leidenfrost, occurs.
An elastic layer of vapour forms beneath the liquid droplets. As it is a poor conductor of heat, the drop evaporates slowly. And the clever corrugation pushes it upwards.
The little trick here is a fluted surface that is heated much higher than the boiling point of the liquid. This is when the effect, named after Johann Gottlob Leidenfrost, occurs.
An elastic layer of vapour forms beneath the liquid droplets. As it is a poor conductor of heat, the drop evaporates slowly. And the clever corrugation pushes it upwards.
Physics on fingers
16 Oct, 10:00
Optical illusion by Japanese mathematician Kokichi Sugihara ๐
Sugihara demonstrated the difference between reality and its reflection in a mirror.
Different geometric shapes are placed in front of a mirror and in the reflection we see a completely different shape. A circle turns into a square and vice versa.
Sugihara demonstrated the difference between reality and its reflection in a mirror.
Different geometric shapes are placed in front of a mirror and in the reflection we see a completely different shape. A circle turns into a square and vice versa.
Physics on fingers
15 Oct, 19:00
Why don't we notice the effects of gravity? ๐ค
The force of gravity depends on the mass of objects and the distance between them. The greater the mass of a body, the stronger the gravitational force.
The Earth weighs 5.9726 x 10^24kg, so for it the gravitational force is obvious. For bodies with a small mass, however, this force is simply unnoticeable.
For example, an accidentally untied scarf is not attracted to us, but falls to the ground only because its mass is many times greater than the mass of a person.
The force of gravitation only becomes noticeable in the case of a really very large mass. It is because of this force that the Earth and other planets do not fly away from the Sun, but are attracted to it and revolve around the luminary.
The force of gravity depends on the mass of objects and the distance between them. The greater the mass of a body, the stronger the gravitational force.
The Earth weighs 5.9726 x 10^24kg, so for it the gravitational force is obvious. For bodies with a small mass, however, this force is simply unnoticeable.
For example, an accidentally untied scarf is not attracted to us, but falls to the ground only because its mass is many times greater than the mass of a person.
The force of gravitation only becomes noticeable in the case of a really very large mass. It is because of this force that the Earth and other planets do not fly away from the Sun, but are attracted to it and revolve around the luminary.
Physics on fingers
15 Oct, 13:00
Opening a live power line. Never do this at home or near your home โผ๏ธ
Physics on fingers
15 Oct, 10:00
Using an acrylic prism and an accelerator to โcatchโ electrons. They easily penetrate deep into the acrylic and slow down quickly as they collide with the plastic molecules.
Physics on fingers
14 Oct, 19:00
An electric arc is a type of electrical discharge in a gas. It was first described in 1902 by the Russian scientist V. Petrov โก๏ธ
Electric arc is a special case of the fourth form of the state of matter - plasma - and consists of ionised, electrically Quasi-neutral gas.
A large voltage is applied to two side by side plates consisting of a conductor, the gas between the plates is electrically neutral, but the electron shells of its molecules are in a powerful electric field, with increasing voltage between the plates there is a shift of electrons inside the gas atom.
At a certain moment electrons under the action of increasing voltage are detached from the nuclei of gas atoms and rush to the positively charged electrode.
An electric current is generated, and the electrons are so energised that they actively emit photons, causing us to see fire, which is essentially plasma - the so-called electron โgasโ.
Electric arc is a special case of the fourth form of the state of matter - plasma - and consists of ionised, electrically Quasi-neutral gas.
A large voltage is applied to two side by side plates consisting of a conductor, the gas between the plates is electrically neutral, but the electron shells of its molecules are in a powerful electric field, with increasing voltage between the plates there is a shift of electrons inside the gas atom.
At a certain moment electrons under the action of increasing voltage are detached from the nuclei of gas atoms and rush to the positively charged electrode.
An electric current is generated, and the electrons are so energised that they actively emit photons, causing us to see fire, which is essentially plasma - the so-called electron โgasโ.
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