Planck's Quantum Hypothesis Explained in Hindi || Notes || Unboxing Physics

  • 6 years ago
The quantum hypothesis, first suggested by Max Planck in 1900, postulates that light energy can only be emitted and absorbed in discrete bundles called quanta. Planck came up with the idea when attempting to explain blackbody radiation, work that provided the foundation for his quantum theory.

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Planck found that the vibrational energy of atoms in a solid is not continuous but has only discrete (distinct) values. Light energy is determined by its frequency of vibration, f. Energy, E, is described by the equation: E = nhf, where n is an integer and h is Planck's constant, equal to 6.626068 × 10−34 Joule-second (J-s).

Planck published his theory “On the Law of Distribution of Energy in the Normal Spectrum” in the German journal Annalen der Physikm, stating: “Moreover, it is necessary to interpret UN ‘the total energy of a blackbody radiator’ not as a continuous, infinitely divisible quantity, but as a discrete quantity composed of an integral number of finite equal parts.”
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