Discussions tagged with 'Photons' Kasim Do Photons Have Mass? Steffen replied 2 months, 2 weeks ago 6 Members · 14 Replies The Particle Model David The Particle Model does not have a Photon Kasim replied 4 months, 1 week ago 2 Members · 2 Replies The Particle Model Viewing 1 - 2 of 2 discussions