Polymerised ethylene is known as polyethylene, a type of plastic.
The V-1 flying bomb was an early pulse-jet-powered cruise missile developed in Nazi Germany and deployed in WWII.
The Japanese Mitsubishi A6M, commonly known as 'Zero' to the Allies, was a legendary aircraft of the Second World War.
Red deer are even-toed ungulates, ruminants. Their males have spectacular antlers.
Common salt is dissolved by water: polar water molecules form a coat around the ions.
This animation demonstrates the components (vertices, edges, diagonals and faces) of the cube, one of the Platonic solids.
Knallgas is the mixture of hydrogen and oxygen. It will explode when ignited.
DC motors consist of a permanent magnet and a coil within the magnet, with electric current flowing in it.
The solution of hydrogen chloride in water is called hydrochloric acid.
This animation demonstrates various types of cylindrical solids as well as their lateral surfaces.
The dissolution of zinc in hydrochloric acid produces hydrogen gas.
Ammonium chloride is the result of the reaction of ammonia and hydrogen chloride
Large-scale ammonia production requires high temperature and pressure and the presence of iron as a catalyst.
An important endocrine gland producing hormones that affect metabolism and the calcium balance of the body.
A sphere is the set of points which are all within the same distance from a given point in space.
Submarines submerge and surface by changing the average density of the hull.
The length of the metal frameworks of bridges change when the temperature changes.
A cuboid is a polyhedron with six rectangular faces.
Karst formations include dolines and dripstones.
The Tesla Model S is one of the first commercially available electric cars.