Bernoulli's principle or how planes take off

It states: an increase in the speed of a fluid occurs simultaneously with a decrease in static pressure or a decrease in the fluid's potential energy.

As it moves, the wing cuts the air and splits it into two streams. The jets of air flowing around the top of the wing move faster than the lower layer, causing the pressure to drop. Below, under the wing, the pressure will be much higher.

When the speed of the airplane increases, so does the difference between the pressures at the top and the bottom of the wing - the airplane acquires lift. It is the high flow pressure on the earth side that allows a multi-ton aircraft to begin its airborne journey.

Quantum Stealth

This new material refracts light so that a person can only see what is behind it from very close range.

The material reflects light from the ultraviolet to the infrared range, resulting in a distorted background. Thus, objects hidden behind the material become literally invisible from a distance.

Diamagnetic Treadmill

A set of five concentric neodymium magnets, alternating NSNSN, form the treadmill and form the grip field.

Pickles emit a yellow light when electricity passes through them, thanks to their high sodium content.

Underwater glass cutting

Scissors make a micro-crack, the capillary effect completes the process by breaking off pieces of glass. The splitting occurs due to the wedging effect of capillary water.

An intriguing experiment with a samurai sword and a Tesla coil.

The Tesla coil or transformer generates a powerful electrical discharge based on the swinging principle. The device features two coils of wire with current flowing at the same frequency and amplifying the electromagnetic field.

Electrons around the transformer seek out a conductor and escape into it, like lightning discharges into a lightning rod.

Is fire an electrical conductor?

A flame arises from a gaseous substance with hydrogen content, and therefore conducts electricity.

As the temperature rises further, the gas changes to another aggregate state - plasma. Plasma consists of charged particles and conducts electricity magnificently. So the flame conducts current, and the higher the temperature of the flame, the better.

Jacob's ladder

The apparatus consists of a high voltage power supply and two electrodes arranged in a vertical plane at an angle to each other.

During operation it is possible to observe the formation and movement of an electric arc from the bottom to the top of the electrodes. That effect is explained by the fact that the arc consists of plasma heated to 5000-7000°C, it warms the air around itself and rises up, pulling the arc cord behind it.

The Lorentz force is commonly referred to as the force affecting an electron that moves and is in a magnetic field.

It is a combination of two forces – magnetic, electric, concentrated on the charge.

Just look at this😱

Radiometer is an instrument designed to measure the energy characteristics of radiation using its thermal effect.

Electromechanical pendulum with magnetic feedback.

Thermogravitational convection

Convection is a type of heat exchange (heat transfer) in which internal energy is transferred by jets and flows of the substance itself.

The simplest jet engine. Alcohol + air + booster converter.

Acoustic levitation

It is based on the creation of a standing sound wave in the air capable of keeping particles suspended.

Electrolysis of tin chloride to form metal.

Variation of the frequency of the oscillating circuit depending on the magnetic properties of the material.

Brachistochrone is a curve lying in the plane between point A and lower point B, where B is not directly under A.

Thus an object slides without friction under the action of a homogeneous gravitational field to a given end point in the shortest possible time.

Heating metal powder in pure oxygen.

Jet engine in a cross-section

A turbojet engine is a gas turbine engine where the chemical energy of fuel is converted into the kinetic energy of gas jets flowing from the jet nozzle.

Extraction of spent nuclear fuel from a nuclear reactor.

The blue glow that can be observed is called Vavilov-Cherenkov radiation.

It is the emission of light by an electrically charged particle when it moves in the medium at a speed exceeding the phase velocity of light in this medium.

How is aurora borealis formed?

The Earth's magnetosphere captures charged particles of the solar wind and as a result aurora borealis is formed at the poles.