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. 1  An unlikely and absurdly designed machine intended to perform a simple function in the most complicated and indirect way. Named in honor of Reuben Lucius Goldberg (1883-1970), an engineer with the City of San Francisco Water and Sewers Department who became a Pulitzer-Prize winning cartoonist, sculptor and author.