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The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
bySmonster ( 2884001 ) writes:
Electromechanical television systems are technically still TVs. I mean the word is even in its name.....
Yet they were only really such in the most generous definition of the word television. Everything has to start somewhere.
Philo T Farnsworth is the inventor of the television in a form that was actually functionally adequate for transmitting images that people could actually easily make out what the images were supposed to be. September 3, 1928 was the first public demonstration. And on August 25, 193
bylarryjoe ( 135075 ) writes:
It's hard for us to think about the spinning mechanical disk TV because it's so different. A light shines on a spinning disk that has holes in a spiral pattern such that the light rasterizes across an object. The light bounces off the object and is detected by a sensor which then transmits the state of the sensor to the viewing device. The viewing device has the same type of spinning disk in front of a light that turns on or off based on the transmitted signal.
There are several problems with this technology. Only one person can view the image, and that person must be exactly lined up. Eventually Baird created a projector system. The rasterization is limited by the rotational speed of the spinning disk, so the images are not that clear, and the resolution was limited. A bright light to illuminate the object was needed, and that projected a lot of heat into the object, enough to make it uncomfortable for a human. The spinning disk also required a big, loud motor.
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