The Bohr model
Among the most significant research carried out in the early 20th century focused on the structure of the atom.
A type of rotary engine of high efficiency
Radial engines are used primarily in airplanes and helicopters.
A two-stroke engine is a type of internal combustion engine with a cycle of only two...
How can a tin can be crushed without manual force? All you need is some water and heat.
There are various types of instruments used for measuring temperature.
How to rotate a pinwheel and a spiral without touching them.
Candles have been used for lighting since ancient times.
Stirling engines are also known as external combustion engines. Unlike internal...