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13 giug 1835 anni - Calvin Goddard uses comparison microscope to determine what gun fired a bullet (1835)

Descrizione:

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.

Aggiunto al nastro di tempo:

Data:

13 giug 1835 anni
Adesso
~ 190 years ago