April 21 in history: First movie projector demonstrated, swine flu vaccine trial begins and more
| Updated: Apr 21, 2020, 09:21 AM IST
From the demonstration of the movie projector to the trial of the first swine flu vaccine, we've got it all covered.
Let's dive in today's history!
1895
First movie projector 'Panopticon' is demonstrated in US.
(Photograph:WION)
1930
Around 320 inmates die after being left unlocked at Ohio prision fire.
(Photograph:WION)
1930
Brasilia becomes capital of Brazil.
(Photograph:WION)
1935
Vietnam's President Thieu resigns under pressure.
(Photograph:WION)
;
1976
Clinical trials of swine flu vaccine begins in Washington, DC.