Chemical refrigerants are assigned an R number which is determined systematically according to molecular structure.Common refrigerants are frequently referred to as Freon (a registered trademark of DuPont).hemical refrigerants are assigned an R number which is determined systematically according to molecular structure.
Some Rube Goldberg machines. use a complicated series of actions to simply move an object from. one place to another. Any object that is moving, has what is called kinetic energy; giving. an object more speed means giving it more kinetic energy.
Rube Goldberg Machines and Inventions. The Rube Goldberg machine. His first drawing for âInventions!â in the New York Evening Mail was, in fact, a fruit that did not fall far from the tree. It was called an âAutomatic Weight-Reducing Machine,â and this illustration was first viewed in 1914. The Automatic Weight-Reducing Machine was made up of a donut, bomb, wax, balloon, and hot stove.