He further even observed and concluded that this substances not only has two melting points but, it reflected polarized light and could rotate the polarization direction of light. And, when it reached 179 degree Celsius it changed again, but into a clear liquid this time. In 1888, an Austrian botanist Friedrich Reinitzer while studying cholesteryl benzoate of carrots observed that when heated cholesteryl benzoate initially at 145 degree Celsius it melted and turned into cloudy fluid.
Liquid Crystals were accidentally discovered while studying Carrots This screen would emit a visible light when struck by a beam of electrons. Braun introduced a CRT with a fluorescent screen, known as the cathode ray oscilloscope. Image courtesy: CRT TV’s (Cathode- Ray Tube) a.k.a Picture Tubeĭon’t you recollect your childhood when you hear of CRT TV’s? But do you know, when was it invented and by whom? The first cathode ray tube scanning device was invented by the German scientist Karl Ferdinand Braun in 1897. Hundreds of stations experimented with television broadcasting using the Nipkow system in the 1920s and 1930s, until it was replaced by all-electronic systems in the 1940s. The first black and white transmission was created by the famous German inventor Paul Nipkow invented the Nipkow disk in 1884, one of the first successful technologies for television transmission. John Logie Barid was the first person to create live pictures and is considered to be the brains behind successfully designing and developing the television.
Although, there were many pioneers like Leon Theremin, Philo Farnsworth, Charles Francis Jenkins, William Bell Boris Rosing and Vladimir Zworkin who designed and developed TV.
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