EngiRef / Fundamental Constant

Planck Constant

Planck Constant (h) = 6.6261 × 10^-34 J·s. Exact defined value in SI. Relates photon energy to frequency. A fundamental constant in the free EngiRef reference…

fundamentalh

Specification

Name
Planck Constant
Symbol
h
Value
6.6261 × 10^-34
Unit
J·s
Category
fundamental
Description
Exact defined value in SI. Relates photon energy to frequency.

Constants

Related constants

Scientific constants

Speed of Light in Vacuum

Exact defined value in SI. Maximum speed in universe.

fundamentalc

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