+"3e8" denotes 3 × 10<sup>8</sup>, a numerical constant central to our understanding of the cosmos. This value closely approximates the [Speed of Light](/wiki/Speed_of_Light) in a [Vacuum](/wiki/Vacuum), a fundamental measure in [Physics](/wiki/Physics) that defines the universal speed limit.
+## See also
+- [Relativity](/wiki/Relativity)
+- [Constant](/wiki/Constant)
+- [Electromagnetism](/wiki/Electromagnetism)
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