Basic Properties of Neutron
Basic Properties of Neutron
mn = 1.00866 u = 1.6749 × 10-27 kg
A free neutron, unlike a...
Atomic Masses
The mass of an atom is very small, compared to a kilogram; for example, the mass of a carbon atom, 12C, is 1.992647 ×...
Photoelectric Effect
Photoelectric effect is the phenomenon of emission of electrons by metals when illuminated by light of suitable frequency. Certain metals respond to ultraviolet light...
Experimental Study of Photoelectric Effect
We can use the experimental arrangement to study the variation of photocurrent with
Intensity of radiation,
Frequency of...
Photoelectric Effect and Wave Theory of light
The phenomena of interference, diffraction and polarization were explained in a natural and satisfactory way by the wave picture of light. According to this...
The Photon: Particle Nature of Light
Photoelectric effect thus gave evidence to the strange fact that light in interaction with matter behaved as if it was made of quanta or...
Wave Nature of Matter
The wave nature of light shows up in the phenomena of interference, diffraction and polarization. On the other hand, in photoelectric effect and Compton...
Davisson’s and Germer’s Experiment
The experiment by Davisson’s and Germer’s provides experimental proof of the concept of wave nature of material particles.
The experimental arrangement used by Davisson and...
Hydrogen Spectrum
Atoms of each element are stable and emit characteristic spectrum. The spectrum consists of a set of isolated parallel lines termed as line spectrum....
Bohr Model
Bohr combined classical and early quantum concepts and gave his theory in the form of three postulates. These are:
Bohr’s first...