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Physics Blogs

Latest physics information, tutorials, concepts, interview questions, and everything related to physics.

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The entropy of a substance is a real quantity, just like pressure, volume and temperature. Its unit is joule/Kelvin (J/K).

A crystal is a solid whose constituent atoms, ions or molecules are closely packed in a regular fashion with repeating pattern in three dimensions.

Nanotechnology is dealing with the characterization, design, production and various applications of nanostructures and nanosystems.

Nanotechnology have considered as the solution to our smallest to biggest problems. Applications of Nanotechnology are countless.

Ampere’s circuital law is one of the general laws of magnetism. This law used to find the magnetic field due to current distribution.

Thermodynamics is the branch of physics which deals with heat and other forms of energy and also gives relationships between them.

Drude and Lorentz gave classical free electron theory of metals theory in 1900. Another name for this is Drude –Lorentz theory of metals.

Faraday’s law gives the idea about how an electromotive force comes into action when a magnetic field interacts with an electric circuit.

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Simple Harmonic Motion (SHM) is when the restoring force is directly proportional to the displacement of the body from its mean position.

The materials which exhibit this property of superconductivity are known as Superconductors.

Rate of Stimulated emission depends upon the number of atoms present in the excited state as well as the energy density of photons.

Shock waves are strong pressure waves in any elastic medium like water, solid or air. Supersonic aircraft or lightning produce Shock waves.

Helium-Neon Laser laser is a gas laser. In this a mixture of helium and neon gas is used as a gain medium. It was the first continuous-wave laser.

A cable that is used to transmit the data through fibres (threads) or plastic (glass) is known as an optical fibre cable.

LASER stands for “Light Amplification by Stimulated Emission of Radiation”.

Walter Meissner and Robert Ochsenfeld discovered a magnetic phenomenon in 1933. He studied and give the Meissner effect.

Quantum mechanics is dealing with the behaviour of matter and light on the atomic and subatomic level.