Bravais lattice gives information of the periodic array in which the repeated units of the crystal are arranged.
Physics
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Shock waves are strong pressure waves in any elastic medium like water, solid or air. Supersonic aircraft or lightning produce Shock waves.
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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.
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CRO or Cathode Ray Oscilloscope displays and measures the electrical signals, time intervals and phase shift between two electrical signals.
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Pumping is the process to achieve population inversion .
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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.
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Rate of Stimulated emission depends upon the number of atoms present in the excited state as well as the energy density of photons.
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The number of atoms present in the excited state is greater than the number of atoms in the ground state is called population inversion.
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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.
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Magnetic Hysteresis Curve represents the relation between magnetizing force (H) and magnetic flux intensity for ferromagnetic material.