what is wave number in sound ?
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Wave number is usually specified for an EM field in a vacuum, also called free space. In most situations, the air is equivalent to a vacuum. In media other than free space, the wave number for a given EM field may increase. When a ray of light passes from air into water or glass, or a radio signal propagates through a polyethylene dielectric rather than air, the wavelength is shortened because the speed of propagation decreases. This causes the wave number to increase.
In free space, the wave number k (in reciprocal meters) is related to the frequency f (in hertz) according to the following formula:
k = f/c
where c is the speed of EM propagation in free space, approximately equal to 2.99792 x 10^8 meters per second.
In free space, the wave number k (in reciprocal meters) is related to the frequency f (in hertz) according to the following formula:
k = f/c
where c is the speed of EM propagation in free space, approximately equal to 2.99792 x 10^8 meters per second.
kpgupta:
but in my book it is written that it is reciprocal of wavelength
yes it can be
and i am only in 9th class
i too
plz tell me in low level
ok
ohhhhh
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