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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.
P-N junction diode is simply a two-terminal device which allows the current to flow in one direction only.
Total internal reflection is the complete reflection of a ray of light within the medium.
Nanotechnology is dealing with the characterization, design, production and various applications of nanostructures and nanosystems.
The wave function contains all the information about the particle. It is not an observable quantity.
Quantum mechanics is dealing with the behaviour of matter and light on the atomic and subatomic level.
The number of atoms present in the excited state is greater than the number of atoms in the ground state is called population inversion.
Nanotechnology have considered as the solution to our smallest to biggest problems. Applications of Nanotechnology are countless.
Walter Meissner and Robert Ochsenfeld discovered a magnetic phenomenon in 1933. He studied and give the Meissner effect.
First posulate of Special theory of relativity is "The laws of physics take the same form in all inertial frames".