EngiRef / Fundamental Constant

Speed of Light in Vacuum

Speed of Light in Vacuum (c) = 299792458 m/s. Exact defined value in SI. Maximum speed in universe. A fundamental constant in the free EngiRef reference, with…

fundamentalc

Specification

Name
Speed of Light in Vacuum
Symbol
c
Value
299792458
Unit
m/s
Category
fundamental
Description
Exact defined value in SI. Maximum speed in universe.

Constants

Related constants

Scientific constants

Planck Constant

Exact defined value in SI. Relates photon energy to frequency.

fundamentalh

Reduced Planck Constant

h/(2π). Common in quantum mechanics.

fundamentalℏ

Elementary Charge

Exact defined value in SI. Charge of a proton.

fundamentale

Avogadro's Constant

Exact defined value in SI. Particles per mole.

fundamentalNᴀ

Gravitational Constant

Universal gravitation constant. F = GMm/r².

fundamentalG

Fine Structure Constant

Dimensionless. Characterizes electromagnetic interaction strength.

fundamentalα