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Two-stroke engine
A two-stroke engine is a type of internal combustion engine with a cycle of only two (power) strokes.
Fuel cell
A fuel cell provides environment-friendly electric energy produced by the chemical reaction between oxygen and hydrogen.
Aerodynamic lift
Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.
The reflection and refraction of light
A ray of light is reflected or refracted at the boundary of two mediums with different refractive indices.
Stirling engine - hot-air engine
Stirling engines are also known as external combustion engines. Unlike internal combustion engines (e.g. Otto-engine), here combustion takes place outside...
p-V-T diagram for ideal gases
The relationship between the pressure, volume and temperature of ideal gases is described by the gas laws.
Satellite navigation, GPS
The Global Positioning System consists of 24 satellites but only 4 have to be visible for positioning.
Moon radar experiment (Zoltán Bay, 1946)
In 1946 a Hungarian scientist was the first person to detect radar echoes from the Moon.
Simple harmonic motion and uniform circular motion
Simple harmonic motion can be considered to be the one-dimensional projection of uniform circular motion.
Suction pumps and direct action pumps
Direct action pumps and suction pumps are among the simplest water pumps.
Light and shadow
By varying the position of the light source, you can examine the shades projected onto the planes of the coordinate system.
Torsion balances
A force can be measured by measuring the twisting of the torsion wire in a torsion balance.
