Free to follow every thread. No paywall, no dead ends.
Elementary particles | HearLore
Category
Elementary particles
ElectronIn 1897, J. J. Thomson measured the mass of a mysterious particle from cathode rays and found it was 1400 times lighter than the lightest known atom…
PhotonIn 1905, Albert Einstein proposed that light is not a continuous wave but a collection of discrete packets of energy, a radical idea that would eventually…