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Explain basic principle of holography
Holography is a new method of producing a 3D image of a 3Dobject. An ordinary photograph is only a 2D image of a 3D object. The photographic ?eld is resistive only to amplitude variation of the electromagnetic waves and it is not sensitive to point variations. So this photo does not give the phase information of the waves. In 1948, Dennis Gabor introduced a new method to record both amplitude and phase variation of the electromagnetic waves scattered from the object. When it is reproduced, we get a 3D image of 3D object. Hologram is a recorded inference pattern obtained by the object waves and the coherent reference wave
Explain the Transmission of Heat Transmission of heat (movement of heat from the hotter item to the colder item) can be brought about three ways: by conduction, convection, and
It is the property of changing readily from a solid or liquid to a vapour. It is the speed that a chemical compounds evaporates. Higher volatility indicates faster evaporation.
Q State Ohm's law. At a steady temperature that the steady current flowing through a conductor is directly proportional to the potential difference between the two ends of the
Differences in Construction of MOSFET and JFET An N-channel JFET is demonstrated in figure (a). It comprises a thin N-type silicon bar with two islands of P-type semiconductor
Assume a hot system at temperature T placed in an environment at a lower temperature T0. The system emits more radiation than it absorbs and cools down whereas the surrounding abso
the use and working principle of thermoelectric thermometer
a) Heat produced is directly proportional to the square of the current passing by a conductor. b) This effect is produced because of collision of free electrons with positive io
How to draw hr diagram including life cycle of the sun
What is the difference between an adiabatic and an isoperibol bomb calorimeter?
(i) The procedure of ejection of electrons from a metal surface by the application of heat is known as thermionic emission and emitted electrons are known as thermions and current
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