825.2 the need for change and th postulates of the special theory It means that there is an ultimate speed c, the same in all directions and in all inertial reference frames. light and any massless particles travel at this speed. no particle that have mass and carry energy or information can reach or exceed this limit no matter how much or how long it is accelerated This postulate is expression of the experimental result (1)in a 1964 experiment, physicist at CERN Rapid 兀→>y+y Speed of the light was OvI same as measured at source rest in the laboratory. 825.2 the need for change and the postulates of the special theory (2)W. Bertozzi experiment(1964) 0 3 Speed10°m/s) v=0.99999999995c11 It means that there is an ultimate speed c, the same in all directions and in all inertial reference frames. Light and any massless particles travel at this speed. No particle that have mass and carry energy or information can reach or exceed this limit, no matter how much or how long it is accelerated. This postulate is expression of the experimental result. (1)in a 1964 experiment, physicist at CERN. π → γ +γ Rapid 0 moving source Speed of the light was same as measured at rest in the laboratory. §25.2 the need for change and the postulates of the special theory (2)W. Bertozzi experiment(1964) v = 0.99999999995c §25.2 the need for change and the postulates of the special theory