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.
Time Machine. Rube Goldberg machines take a ridiculously complicated route from A to B, so if you think about it, the creation of the universe is kind of like a massive Rube Goldberg machine. At least thatâs the idea behind this Purdue University Rube Goldberg machine called âTime Machineâ which illustrates the history of the world from the Big Bang to the Apocalypse.