Interference

Check us out at http://www.tutorvista.com//videos .Interference is the addition (superposition) of two or more waves that results in a new wave pattern. Interference usually refers to the interaction of waves that are correlated or coherent with each other, either because they come from the same source or because they have the same or nearly the same frequency. Interference in physics corresponds to what in wireless communications is called multi-path propagation and fading, while the term interference has a different meaning in wireless communications. Consider two waves that are in phase, with the same amplitudes A1 and A2. Their troughs and peaks line up and the resultant wave will have amplitude A = A1 + A2. This is known as constructive interference.
If the two waves are π radians, or 180°, out of phase, then one wave's crests will coincide with another wave's troughs and so will tend to cancel out. The resultant amplitude is A = |A1 − A2|. If A1 = A2, the resultant amplitude will be zero. This is known as destructive interference.
When two sinusoidal waves superimpose, the resulting waveform depends on the frequency (or wavelength) amplitude and relative phase of the two waves. If the two waves have the same amplitude A and wavelength the resultant waveform will have an amplitude between 0 and 2A depending on whether the two waves are in phase or out of phase.

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[safasuba]

ohhh....his voice is something blablabla.........



[straighter100]

@MyMakeupMagic15

it lookes boring cuz an Indian guy is teaching it, lol.

[MyMakeupMagic15]

this is so boring. I hate physics.

[supradeep181994]

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