Ultrasonic Grating - Mathematics

Mathematics

The grating element is equal to the wavelength of the ultrasonic waves. Let it be denoted by . If is the wavelength of the light passed through the grating which is diffracted by an angle, then the nth order of the maximum is given by:

or

If v is the velocity of the ultrasonic wave in the liquid we can calculate the velocity of the wave with:

or,

where is the frequency of the wave.

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