What is Planck's constant?

Answer 1

Planck's constant (denoted h) is a physical constant that is used to describe the sizes of quanta. It plays a central role in the theory of quantum mechanics, and is named after Max Planck, one of the founders of quantum theory.
Heisenberg showed that the uncertainity in the position of the particle times the uncertainity in its velocity times the the mass of the particle can never be smaller than a certain quantity,which is known as Planck's constant.This limit doesnot depend on the type of particle,or on the way in which one tries to measure the position or velocity of the particle.
Planck's constant is also used in measuring energy emitted by light photons, such as in the equation E=hv, where E is energy, h is Planck's constant, and v (Greek letter nu) is frequency.
The value of Planck's constant is:
6.626068 x 10^-34 m^2 kg/s(Joules/s)

Answer 2

Planck Constant

Answer 3

According to Planck's hypothesis, energy can be absorbed or radiated by a body in discrete quantities and the energy of a particular radiation is proportional to its frequency . The proportionality constant is called Planck's constant. It is represented by 'h' and its value is 6.603 x 10^(-34)
If 'E' be the energy of a radiation, 'f' be its frequency and 'n' be any natural number, then,

E= nhf

Answer 4

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What is Planck's constant?

Answer 5

Planck's constant = 6.626068 × 10-34 m2 kg / s

Answer 6

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Planck's constant: Planck's constant is a fundamental parameter in quantum mechanics. It determines the size of the discrete units or energy, mass, spin, etc. into which the microscopic world is partitioned. Its value is 1.05 x 10-27 grams-cm/sec.

Answer 7

Planck's constant = 6.626068 × 10^-34 m2 kg/s

It is used to describe the size of quanta, or units of energy

Answer 8

Planck's constant (h) is a physical constant that we use to describe sizes of quanta (packets of energy). this constant plays a very important role in the theory of quantum mechanics. it is named after Max Planck, who was one of the founders of the quantum theory. we use the Planck's constant to measure the amount of energy emitted by a light photon. (E = hf), where E = energy, h = Planck's Constant and f = frequency of emitted light. Planck's constant is expressed in SI unit of joules per Hertz. (J/Hz)

for further ref, visit http://en.wikipedia.org/wiki/Planck%27s_constant

hope this helps u.... :)

Answer 9

Planck's constant, h, is the constant ratio of the Energy of a particle to its frequency.

E = hf, where E is the energy and f is the frequency.

h has a value of 6.626 x 10exp(-34) Joule-seconds

Answer 10

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