PhysicalConstants`

SpeedOfLight

As of Version 9.0, physical constant functionality is built into the Wolfram Language »

SpeedOfLight

is the speed of light in a vacuum, a universal constant.

更多信息和选项

To use SpeedOfLight, you first need to load the Physical Constants Package using Needs["PhysicalConstants`"].
SpeedOfLight is given in units of Meter/Second.
The speed of light is 299792458 Meter/Second.

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