I have a quite simple doubt. One of the practical applications of Heisenberg's uncertainty principle is given by Heisenberg's microscope. In this thought expt. heisenberg imagines of a hypothetical microscope in which an observer attempts to measure the position and momentum of an electron simultaneously by shooting a photon at it. If the photon has short wavelength and high momentum, the position will be measured accurately but the momentum will be uncertain, if not, the converse will happen. How does the uncertainty of position depends on the wavelength of photon ?