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What are different pumping mechanisms in LASERS?
The ordered arrangements of radiations according to wavelengths or frequencies are called as Spectrum. Spectrum may be divide in two parts Emission spectrum and Absorption spectrum
Explain about the term ultrasonics shortly. The world ultrasonics applies to sound waves which vibrate at a frequency higher than the frequency which can be heard through the h
The recombination procedure is represented with returning the electron from the CB where it is free into a hole in the VB where it is in a bond. The excess energy of the electron
Experiment with wat er Suspend a tin can about 8 cm deep and 12 cm in diameter as shown in the diagram. Pour about 3 cm of water into the can and twist the drill. Observe what
Production of electricity by pressure: Certain crystals and semiconductors produce an emf between two opposite faces when the mechanical pressure on them is either increased or
Explain the Process of Phase Changes Matter exists in three forms: as a solid, a liquid or as a gas. These are called phases of matter. If we take a chunk of ice (solid water) fr
Gauss' law for magnetic fields The magnetic flux by a closed surface is zero; no magnetic charges present. In differential form, div B = 0.
What is the difference between a lens and a mirror? A mirror is a reflective surface. Light passes by the glass and hits the silver backing, reflecting off of it. (The angle of
Explain about the transmission electron microscope. The Transmission Electron Microscope Transmission electron microscopy (TEM) is a microscopy method; a beam of electrons i
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