This Day in Geek History: July 28
1851
A total solar eclipse is first captured on a daguerreotype photograph by Busch and Berkowski, at the Royal Observatory in Königsberg, Prussia. It shows a slight but distinct impression of the corona during the total eclipse. Berkowski, a local daguerrotypist whose first name is never published, observed the eclipse at the Royal Observatory using a small 6cm refracting telescope attached to a 15.8cm Fraunhofer heliometer camera. The daguerreotype uses an 84 second exposure and is taken shortly after the beginning of totality.
1858
Fingerprints are used for the first time as a means of identification.
1896
Using an Edison Vitascope projector, a film is exhibited commercially for the first time anywhere in Canada at the West End Park, in Ottawa.
1930
John Logie Baird gives the first public demonstration of his large screen television in the UK at the London Coliseum Variety Theatre. The television’s screen displays an image thirty by seventy inches, created by 2,100 lamps which are operated by a mechanical commutator switch. The entire device is built into a small, wheeled trailer that can be moved on and off stage. The exhibition will continue for three weeks.
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