Photon, also known as light quantum, is a tiny energy packet of electromagnetic radiation. This concept originated in Albert Einstein’s explanation of the photoelectric effect, in which he proposed the existence of discrete energy packets during the transmission of light. Albert Einstein was best known for his General and Special theory of relativity and the concept of mass-energy equivalence (E = mc2.)
J.J Thomson
J.J Thomson, an English physicist and a Nobel Laureate in Physics, is credited and honoured with the discovery of the electron, which was the first subatomic particles to be discovered. Thomson managed to show that cathode rays were composed of previously unknown negatively charged particles (electrons), which he calculated and inferred might have smaller bodies than atoms and a substantial charge-mass ratio. He is also credited for finding the first evidence for the existence of isotopes for stable elements.
Do'stlaringiz bilan baham: |