History of the Flash Bulb!!!

History Of Photographic FilmThe history of photographic films dates back to 1889. Cellulose nitrate was used for this. 
Nitrate film encouraged the production of rolls of film. This led to the development of the first ever 35mm wide film. 35mm film was manufactured for cameras using this very technology in 1920s.
The twin lens reflex camera was developed in 1929 using medium format roll film. The film measured 6cm wide and was backed with paper. The paper backing made it easy to handle in daylight.
Triacetate film was used till the 1970s since it was more stable and fireproof. 
Polyester polymers were introduced in the 1960s for gelatin base films.
History Of The FlashbulbBefore flashbulbs were invented photographers used flashlight powder. Miethe and Gaedicke used lycopodium powder in 1887 in Germany as flashlight powder. The Austrian inventor Vierkotter is credited with creating the modern flashbulb, as we know it today. A magnesium-coated wire was used in an evacuated glass sphere. Later the magnesium-coated wire was discarded for aluminum foil in oxygen.

Ostermeier had the honor of selling the first-ever patented commercial flashbulb in 1930 – the Vacublitz. General electric followed with the more famous Sashalite.