Feynman Explains Where Does Light Get Its Speed?

Where Does Light Get Its Speed? The Answer Is Terrifying. Light doesn't accelerate. It's born at full speed—299,792,458 meters per second. The Physics: A baseball must accelerate from zero to full speed A water ripple is born at the speed of the medium Light is like a ripple—but in what medium? The aether was disproven—space is empty The Answer: Light is an electromagnetic wave Electric fields create magnetic fields, which create electric fields They leapfrog through space at a speed set by the properties of space itself Maxwell discovered this in the 1860s The Mind-Bender: The speed of light is not about light—it's the speed of causality Nothing with mass can reach it Light has zero rest mass, so it must move at this speed A photon experiences zero time between emission and absorption The Deep Mystery: Why is the speed of light 299,792,458 m/s? We don't know—it's built into the fabric of space and time The speed limit of the universe The bridge between cause and effect Light is the messenger of the cosmos. And its speed is the speed of reality itself. #SpeedOfLight #Light #Physics #ScienceDocumentary #Electromagnetism #Maxwell #Einstein #Relativity #SpecialRelativity #Photon #ElectromagneticWave #Cosmology #Universe #Science