May 15 in history: First hydrogen bomb tested, Harmonics Law discovered and more!

 | Updated: May 15, 2020, 08:54 AM IST

From the first female Premier of France to first hydrogen bomb being tested.

We have covered it all!

1618

Harmonics Law discovered

(Photograph:WION)

1718

World's first machine gun check patent.

(Photograph:WION)

1957

First hydrogen bomb tested

(Photograph:WION)

1988

USSR withdraws forces from Afghanistan.

(Photograph:WION)
;

1991

First female Premier of France

(Photograph:WION)