13 jun 1835 año - Calvin Goddard uses comparison
microscope to determine what
gun fired a bullet (1835)
Descripción:
Calvin Goddard was able to prove when and how a gun fired a bullet by comparing two bullets, one from a test gun and one from the suspects gun, under the microscope.
Añadido al timeline:
fecha:
13 jun 1835 año
Ahora mismo
~ 190 years ago