The small packets of energy derived from the electromagnetic radiations are termed photons. These were first explained by Albert Einstein while he was working on the photoelectric effect. He proposed that there exist some discrete packets of energy when the light is being transmitted.
Max Planck had also explained the concept that the heat rays are emitted and absorbed in the form of distinct units which he named quanta. The photons are known as the light quantum and their energy is totally dependent upon the frequency of the radiations. They are the carriers of the electromagnetic field and have no charge and mass.
A photon with wavelength λ = 0.1385 nm scatters from
Using a mixture of CO2, N2, and sometimes He,
a. What accelerating potential is needed to produce electrons of wavelength
Explain what it means for an atom to be in an excited
What does the wavelength of electromagnetic radiation represent? How is the
Figure 39.19a shows the energy levels of the sodium atom
In your research on new solid-state devices, you are
How many photons per second are emitted by a 7.50
Two equal-energy photons collide head-on and annihilate each
An electron and a positron are moving toward each other and each
