April 21 in history: First movie projector demonstrated, swine flu vaccine trial begins and more

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)

1960

Brasilia becomes capital of Brazil.

(Photograph:WION)

1975

Vietnam's President Thieu resigns under pressure.

(Photograph:WION)

1976

Clinical trials of swine flu vaccine begins in Washington, DC.

(Photograph:WION)

Read in App