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Stirling engines are also known as external combustion engines. Unlike internal combustion engines (e.g. Otto-engine), here combustion takes place outside...
The process of the decay of unstable nuclei is called radioactivity.
The animation shows the way forces act on wheeled vehicles and vehicles with runners.
Radial engines are used primarily in aeroplanes and helicopters.
The Kepler space telescope was launched by NASA to discover Earth-like planets orbiting other stars
Submarines submerge and surface by changing the average density of the hull.
The relationship between the pressure, volume and temperature of ideal gases is described by the gas laws.
DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.
During its orbit around the Earth, the visibility of the Moon's illuminated part constantly changes.
Due to their asymmetrical profile of the wings, lift is produced while flying at a high speed.
Jupiter is the largest planet of the Solar System, it has two and a half times the mass of all the other planets combined.
Possible traces of water and life are sought on Mars.
Mercury is innermost and smallest planet of the Solar System.
Neptune is the outermost planet of the Solar System, the smallest of the giant planets
Saturn is the second largest planet in the Solar System, easily recognisable by its rings.
Uranus is the 7th planet from the Sun, a gas giant.
Venus is the 2nd planet from the Sun, the brightest object on the night sky (after the Moon).
Hydrogen atoms within hydrogen molecules are held together by a covalent bond.
During freezing hydrogen bonds are formed between water molecules resulting in a crystal structure.
The Space Shuttle was a manned, reusable spacecraft operated by NASA.
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