When an electron and positron annihilate, both their masses are destroyed, creating two equal energy photons to preserve momentum.Explain why the two rays travel in exactly opposite directions if the center of mass of theelectron-positron system is initially at rest.

When an electron and positron annihilate, both their masses are destroyed, creating two equal energy photons to preserve momentum.Explain why the two rays travel in exactly opposite directions if the center of mass of theelectron-positron system is initially at rest.

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter5: Relativity

Section: Chapter Questions

Problem 100AP: A positron is an antimatter version of the electron, having exactly the same mass. When a positron...

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Speed of light

The speed at which the light travels in a vacuum is unbiased for both the source and inertial frame of reference of the observer. This was postulated by the physicist, Albert Einstein, by observing the theory of electromagnetism of Maxwell. Also, there was no evidence for the luminiferous aether, that is, the medium for the propagation of light where the electromagnetic field exists.

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