What do you understand by black body radiation explain why wave theory failed to explain it?

What do you understand by black body radiation explain why wave theory failed to explain it?

It says “If we assume, he said, that radiation is emitted in packets of energy instead of continuously as in a wave, then we can explain the black body spectrum.” So, the problem in the wave theory is that energy is absorbed or emitted continuously, not in multiple quanta. Hence it fails to explain it.

How does the wave theory fail to explain the photoelectric effect?

(a) The wave nature of light fails to explain the photoelectric effect; this is because of the following reasons: When the waves of light of higher intensity fall on the metal surface, more energy will be imparted to the electrons. Hence, the kinetic energy of the emitted/ ejected electrons increases.

Why electromagnetic wave theory of light could not explain black body radiation?

Explanation: according to electromagnetic theory, the absorption and the emission should be continuous. as the wavelength keeps decreasing, the intensity of the emitted radiations should keep increasing to infinity. such is not the case with black body radiations.

Why is wave theory of electromagnetic radiation not able to explain photoelectric effect How does the photon picture resolve this problem?

According to wave nature of radiation it is cantinuous and follow the principle of super position hence it cannot explain the existance of threshold frequency. Wave nature cannot explain the fact that kinetic energy of the emitted electrons is independent of intensity of radiation and depends on frequency.

What is the black body radiation problem?

The ultraviolet catastrophe, also called the Rayleigh–Jeans catastrophe, was the prediction of late 19th century/early 20th century classical physics that an ideal black body at thermal equilibrium would emit unbound quantity of energy as wavelength decreases, corresponding to ultraviolet light.

What are the failures of classical statistics?

Classical mechanics or Newtonian mechanics failed to explain the phenomenon like black body radiation, photoelectric effect, the temperature dependence of heat capacity of the substance.

What are the failure of wave Theory?

The wave theory of light can perfectly explain some effects of light such as diffraction, polarization, and interference. However, it also fails to prove some theories and observations such as the photoelectric effect and the Compton Effect.

Why photoelectric effect Cannot be explained by the classical physics?

The photoelectric effect has three important characteristics that cannot be explained by classical physics: (1) the absence of a lag time, (2) the independence of the kinetic energy of photoelectrons on the intensity of incident radiation, and (3) the presence of a cut-off frequency.

Why does a black body emit radiation?

All objects emit electromagnetic radiation according to their temperature. A black body is an idealized object that absorbs all electromagnetic radiation it comes in contact with. It then emits thermal radiation in a continuous spectrum according to its temperature.

Is black body radiation justified by wave nature of light?

So the black-body of spectrum shows the particle nature of light in the same way as atomic theory explains the distribution of molecular speeds in a gas. *High frequency electromagnetic waves are termed ultraviolet radiation; I think it would be called the x-ray catastrophe nowadays!

What is black body radiation and photoelectric effect?

According to the electromagnetic theory, the energy is emitted or absorbed continuously. So, the radiations emitted may vary in intensity, but should have same colour. The change in color shows, that wavelength also changes . This indicates non continuous flow of energy.

How does quantum theory explain black body radiation?

Blackbody radiation is a theoretical concept in quantum mechanics in which a material or substance completely absorbs all frequencies of light. As the temperature increases, the total radiation emitted also increases due to an increase in the area under the curve.

Can we explain the black body spectrum with wave theory?

It says “If we assume, he said, that radiation is emitted in packets of energy instead of continuously as in a wave, then we can explain the black body spectrum.” So, the problem in the wave theory is that energy is absorbed or emitted continuously, not in multiple quanta.

Is the energy of blackbody radiation shared evenly by all wavelengths?

The energy of blackbody radiation is not shared evenly by all wavelengths of light. The spectrum of blackbody radiation (below) shows that some wavelengths get more energy than others. Three spectra are shown, for three different temperatures.

What is the problem in the wave theory?

So, the problem in the wave theory is that energy is absorbed or emitted continuously, not in multiple quanta. But why is continuous emission or absorption a problem when we deal with black body radiation?

How does Planck’s quantum theory explain blackbody radiation?

My textbook says the Planck’s quantum theory explains blackbody radiation. It says “If we assume, he said, that radiation is emitted in packets of energy instead of continuously as in a wave, then we can explain the black body spectrum.” So, the problem in the wave theory is that energy is absorbed or emitted continuously, not in multiple quanta.