Question

Who invented quantum theory ?

Answer 1

Hint:Here, you are asked to tell the inventor of quantum theory. In order to answer this question, you need to look back at the history of quantum mechanics. The history of quantum mechanics began with scientific discoveries done by various scientists.

Complete answer:
The history of quantum mechanics includes discoveries like the discovery of cathode rays done by Michael Faraday, then Gustav Kirchhoff stated about the black-body radiation, then Ludwig Boltzmann suggested that the energy states of a system can be discrete, then Heinrich Hertz came up with the discovery of the photoelectric effect and then Max Planck’s quantum hypothesis that any energy radiating system can be divided into discrete energy elements such that the energies are proportional to the frequency with which the energy is radiated.

Albert Einstein postulated with Max Planck’s quantum hypothesis that light is also made of quantum particles. Ludwig Boltzmann’s sets of reasons behind the idea of discrete energy levels were originated by statistical mechanics and statistics thermodynamics and supported by mathematical arguments and same was the case with the first quantum theory put forward by Max Planck. Max Planck gave the idea of quantized energy in order to show or formulate the observed dependency of energy on the frequency, energy emitted by a black body.

So, quantum theory’s pioneer would be Max Planck.

Note:We have discussed in brief about the history of quantum theory. The idea of quantum theory was slowly built by various discoveries made by different scientists, you should keep a track of these. Also, remember that Max Planck came up with the idea that energy radiated by a black body is quantized.