h

Definition : Planck's constant
Category : Academic & Science » Physics
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What does h mean?

Planck's constant (h) or Planck constant, is a universal constant in physics that relates a photon's energy to its frequency.
E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the photon.
The value of h is equal to 6.626176 x 10-34 joule-seconds.
Planck's constant is named after its discoverer, the German physicist Max Planck.

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Worldwide H Height
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Worldwide h hour
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Worldwide H Henry
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Worldwide H upper half-plane
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Worldwide H Heliport
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Frequently Asked Questions

What is the full form of h in Fundamental constants?

The full form of h is Planck's constant

What are the full forms of h in Academic & Science?

Height | Hydrogen | hour | Planck's constant | Henry | impulse response | hecto | magnetic field strength | Heaviside step function | upper half-plane

What are the full forms of h in Worldwide?

Height | Hydrogen | hour | Planck's constant | Henry | impulse response | Hospital | hecto | magnetic field strength | Hit | Heaviside step function | upper half-plane | Heliport

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Citations Formatting rules vary by edition. Please verify against your required style manual.

APA Style

FullForms. (2026). h. FullForms.com. https://fullforms.com/h/full/25614

Chicago Style

FullForms. "h." Accessed June 25, 2026. https://fullforms.com/h/full/25614.

Harvard Style

FullForms (2026) 'h', FullForms.com. Available at: https://fullforms.com/h/full/25614 (Accessed: 25 June 2026).

MLA Style

"h." FullForms.com, 2026, https://fullforms.com/h/full/25614. Accessed 25 Jun. 2026.