In the laser lab, temperature is used to control the wavelength
of the laser, and a grating and several mirrors are used to convert
the change of wavelength to change of laser beam propagation
direction and finally to the change of position of the laser spot
on the grid paper.
If the groove separation is 0.5 micrometers,
the distance between the grating and the paper is
1 meters, and if the wavelength change is
2 nm, how much does the...