Value of Planck Constant

We have known many physical constants in physics. Planck’s constant is one such physical constant which defines the behaviour of particles and waves on the atomic scale along with the particle aspect of light. In this article, let us learn in detail about the Planck’s constant along with the value and applications.

What Is Planck’s Constant?

In the quantum of electromagnetism, Planck’s constant is the physical constant that relates the energy carried by a single photon to its corresponding frequency. Represented by h and measure using J.s in the SI system and eV.s in the MKS system. The value of Planck’s constant has got prime importance in quantum mechanics. Therefore, Planck’s constant can be defined as,

A fundamental constant, equal to the energy of a quantum of electromagnetic radiation divided by its frequency.

What Is the Value of Planck’s Constant?
The value of Planck’s Constant or value of h is experimentally validated. The value of h is given below:
Value of h In SI units
h = 6.6260715×10^-34 J.s
Value of h In Meter-Kilogram-Second(MKS) units
h = 4.135667662×10^-15 eV.s
Value of h in terms of E_p.t_p
2 pi
Application of Planck’s Constant
The value of Planck constant is used in various applications including Planck’s equation. For example, the energy associated with a photon is given by the product of the Planck constant(h) and its frequency.