Demonstration of a mere application of physics.

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Van de Graaff generator in action.

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AREOMETER

Concentration and density data are in constant demand. The strength of alcoholic beverages, the quality of acid in a battery, the condition of antifreeze, saline solutions, and the content of soluble substances in juice are just a few of the tasks where areometers are indispensable.

Visual illustration of the force of pressure ejection when a tire explodes.

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The vacuum was kept until the can was tilted.

The neck of the can is covered with a wire mesh. As it tilts it, the surface tension of the water prevents air from passing through the mesh until it flips over, increasing the pressure at the bottom and allowing air to displace the water at the top.

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Two-dimensional magnetic levitation.

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Ballistics

All shot at 100,000 frames per second.

Comparison of various pistol and rifle ammunition.

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Clear example of how effective LED bulbs are.

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Effect of temperature on the material

The vast majority of substances expand when heated.

This can easily be explained in terms of the mechanical theory of heat, since the molecules or atoms of a substance begin to move faster when heated.

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A flying drone with Archimedean propellers (based on sketches of Leonardo da Vinci), was created by American students at the University of Maryland.

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Niji cube

Here the iridescent spectrum is not created by refraction, as with a prism, but by diffraction, where light waves deconstructively and structurally interfere.

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The law of conservation of energy

A classic illustration of the principle is a spring or mathematical pendulum with negligibly small damping.

In the case of a spring pendulum, the potential energy of the deformed spring is converted into kinetic energy of the weight and back as it oscillates.

Likewise in the case of a mathematical pendulum, the potential energy of a weight in a field of gravity behaves in a similar way.

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This is how a chain reaction occurs when a radioactive substance explodes.

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Aerodynamics at home

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Glyphosate is a non-selective systemic herbicide used to control weeds. Among herbicides it ranks first in the world in terms of production volumes.

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Benz & Cie is the world's first car with an internal combustion engine, built in 1885 by the German inventor Carl Benz. It was officially granted patent #37435 on January 29, 1886.

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ELECTRON DIFFRACTION

Electron diffraction is the elastic scattering of a beam of electrons by atoms and/or molecules of a substance, which results in angularly deflected electron beams (so called diffraction beams) from the primary beam.

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Metal paperclip is held on water by surface tension

Molecules of a liquid experience mutual attraction forces. Inside the liquid, the attraction forces of other molecules act on all sides and therefore cancel each other out. Molecules on the surface of the liquid have no neighbors on the outside, and the resulting attraction force is directed inside the liquid. As a result, the entire water surface tends to shrink under the action of these forces.

Cumulatively, this effect leads to the formation of the so-called surface tension force, which acts along the liquid surface and results in the formation of a semblance of an invisible, thin and elastic film on it.

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Kinetic toy with tail spinning.

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Simple example of how hydraulics function.

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