A person who demonstrates things such as objects, things, political, vehicles, etc are normally referred to as demonstrators. A scientific demonstrator demonstrates things which are of scientific in nature and each part needs to be explained in simple terms in order to be understandable to the public. Scientific demonstrations include demonstrations of scientific instruments, medicine, etc.
A master's or a graduate degree in subjects such as teaching or technical writing and communication
The salary package of the demonstrator’s could be somewhere around 2.5 Lac p.a. (Approx).