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What is black hole
Imagine an elctromagnetic wave propagating vacuum with electric field Ex=10 2 sinπ(3x10 6 z - 9x10 14 t) V/m, E y =0, E z = 0. Calculate the speed, frequency, wavelength, initial
Define the Intensity of the laser in short. Intensity: a. Lasers are intense and bright light sources. It is due to coherence and directionality. b. The intensity is e
COHERENCE : 1) Visible light energy is emitted when the excited electrons in atoms undergo transitions to the ground state. 2) In ordinary light sources, these transitions
Electric and Magnetic Fields of an Oscillating Charge A 3 dimensional animation of the "far" fields of an oscillating charge. Electromagnetic radiation (EM radiation or EMR) is
How is absorption occurred in fibre material? Absorption is associated to the fibre material. It is caused by three diverse mechanisms, which are: a. Absorption by atomic de
example problms of vectors?
Properties of light: The wavefronts can be of different shapes depending on the size and shape of light source and the distance from it. Huygens' principle states that every p
what are the advantages of surface tension
It is the phenomenon of emission of electrons from the surface of metals, when light radiations (Electromagnetic radiations) of suitable frequency drop on them. The emitted electro
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