4 ms·
To add to what was said in the other answers, turning light on and off very quickly broadens the source so that every frequency is present (i.e. take the Fourie
by thsksbd 3y ago
To add to what was said in the other answers, turning light on and off very quickly broadens the source so that every frequency is present (i.e. take the Fourier transform of a delta) but still focasable to a narrow point.