Simple Harmonic Motion (SHM) is when the restoring force is directly proportional to the displacement of the body from its mean position.
Engineering
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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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The multiplexer is a special type of combinational circuit which has n-data inputs, one output and m inputs select lines with 2^m = n.
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The IC 555 timer is an 8 pin chip. It is used in applications such as multivibratiors. It operates in astable, bistable and monostable mode.
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The losses in transformer are listed below. Some of them occur due to alternating flux or due to ohmic resistance in the windings.
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The Programmable Interrupt controller is also known as PIC micro-controller. It is used as interfacing device. It has different operating modes.
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TDMA (Time division multiple access) is used where there is no need for continuous transmission. Due to this it can be used instead of FDMA.