# physics

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I have the speed of a light source in plexiglass and I need to find the change in frequency from air to plexiglass and the change in wavelength.

• physics -

The frequency does not change. There is no waiting line. As many pulses per second travel on both sides of the boundary.
The speed does change.
wavelength = speed * period = speed /frequency

• physics -

Thank you very much

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