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Most solid materials show elastic behaviour to a lesser or greater extent.
In 1960, Maiman constructed the Ruby laser. It is a three-level solid-state laser and is emitting red light of wavelength 694.3 nm.
Rate of Stimulated emission depends upon the number of atoms present in the excited state as well as the energy density of photons.
Compton discovered the most important confirmation about the particle aspect of radiation.
In 1895, German physicist Wilhelm Roentgen discovered X-rays. X-rays are electromagnetic in nature and application of X-rays are innumerable.
Undergoing deformation following two terms describe the forces on objects. Stress and strain.
The entropy of a substance is a real quantity, just like pressure, volume and temperature. Its unit is joule/Kelvin (J/K).
The process of converting unpolarized light into polarized light is known as polarization.
The group of high energy particles, which move closely to the speed of light is the …
Simple Harmonic Motion (SHM) is when the restoring force is directly proportional to the displacement of the body from its mean position.
The number of atoms present in the excited state is greater than the number of atoms in the ground state is called population inversion.
Total internal reflection is the complete reflection of a ray of light within the medium.