[QUE/EPP-01032]

An analysis of measurement of position, the famous  Heisenberg microscope thought experiment, leads to  uncertainty relation with momentum uncertainty identified with the momentum transfer. Using similar idea show that the distance probed in a scattering experiment  \[  A + B \longrightarrow A + B\] is approximately  \(1/\sqrt{t}\), where $t=(p_A-q_A)^2\), where \(p_A, p_B\) denote the initial and \(q_A, q_B\) denote the final four momenta of the two particles.