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.
The first illustration depicting a âRube Goldberg Machineâ was an Automatic Weight Reducing Machine in 1914 using components such as a donut, bomb, wax, balloon and hot stove to trap an obese person in a sound and food proof prison, who had to lose weight before wriggling free.n 1938, Rube Goldberg gave up cartooning and wrote popular articles and stories but returned to editorial cartooning for the New York Sun. Later, he was employed by the New York Journal America until his retirement in 1964 where thereafter he made bronze sculptors.