light cone
Sign in to saveAlso known as light cones, lightcone, light-cone
path taken by a flash of light through spacetime
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- Light cones
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Encyclopedic overview
Light cone in 2D space plus a time dimension, more commonly referred to as ‘space time’
In special and general relativity, a light cone (or null cone) is the path that a flash of light, emanating from a single event — localized to a single point in space and a single moment in time — and traveling in all directions, would take through spacetime.
Excerpted from Wikipedia’s “light cone” article, available under the CC BY-SA 4.0 licence.