>There is no 'proof' in science. Like many linguistic terms, the word "proof" has a number of different meanings. In science it has a different meaning than in

>There is no 'proof' in science. Like many linguistic terms, the word "proof" has a number of different meanings. In science it has a different meaning than in logic or mathematics. As a consequence, scientists talk all the time about something being proved. For instance, a new chemical material is created, and a simple experiment is done to prove (= determine with certainty) how well it conducts electricity at room temperature. As for theories, well-established ones usually never get disproved, they only are shown to be particular cases of larger ones. That is why physicists still study and make use of newtonian physics.