'Every great physical theory starts as a heresy and ends as a dogma''. Give some examples from the history of science of the validity of this incisive remark.

Explanation

The statement is true .
For example :
(i) Ptolemy postulated the existence of geocentric theory . According to him earth is at the centre of universe and heavenly bodies revolve around the earth . It is a heresy . But when Galileo proved the heliocentric theory then Ptolemy.s geocentric theory was considered as a dogma .
(ii) Initially wave theory of light was given by Young.s double slit experiment, it was a heresy . But when quantum theory was given by Einstein then wave theory was considered as a dogma .