Planck's constant is a fundamental physical quantity that describes the relationship between the energy of a photon and its frequency, with a fixed value of 6.626 x 10^-34 joule seconds. This universal constant is essential in quantum theory and emphasizes the particle nature of light at atomic and sub-atomic levels. It is denoted by the symbol 'h' and serves as a proportionality constant in calculations.

1. Planck's constant
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Planck constant is a fundamental
physical quantity. Its magnitude and unit
are independent of other physical
quantities for measurements.
Planck constant is a universal constant.
It is a fixed value that does not change
with time. And it is known worldwide.
It explains the particle nature of light on
the atomic and sub-atomic levels. Thus,
Planck's constant plays a vital role in
quantum theory.
It is a number that helps to calculate the
energy of light. The value of Planck's
constant is 6.626 X 10-34 joule second in
the SI system.
It is a constant physical quantity that
relates the energy of a photon with its
frequency. The symbol "h" denotes it.
It is a proportionality constant. It shows the
proportionality relationship of h with the
photon's energy and frequency.
What is a Planck's constant?