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