Voltoscope
From Tardis Wiki, the free Doctor Who reference
Small arms. This is a transistorized torch. Into the size of a normal torch, they have concentrated the power of a thousand suns. This flashed into the eyes of an advancing enemy, creates temporary blindness. Imagine having a huge searchlight being shone straight into your eyes and you have some idea of the intensity of the beam. (DAN: The Dalek Book)
