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The First TV
The first tv, invented by Philo T.Farnsworth, was made up of a cathode ray tube, carbon, a glass slide, and a motor generator. He took the glass slide, smoked it with carbon, scratched a single line on it, and placed it in a carbon arc projector which shined onto the first camera tube. The first image transmitted was a straight line. -
No More Mechanical Parts
Farnsworth wanted to improve his invention so he took off the motor generator which was the last mechanical part in the tv. https://en.wikipedia.org/wiki/History_of_television -
New Camera Tubes
The RCA (Radio Corporation of America) created an improved camera tube which had a light sensitivity of about 75,000 lux. Two new camera tubes came out in 1934 which were 10-15 times more sensitive than the original. This affected how bright the images appeared on screen which led to less lights and cooler sets. https://en.wikipedia.org/wiki/History_of_television -
Adding Color
During this time, black and white tv was consiedered to be old and as a result, the idea of color appeared. Hungarian engineer, Peter Carl Goldmark, developed an electro-mechanical system in which a disk made of red, green, and blue filters spin inside the television camera at 1,200 rpm (rotations per minute). https://en.wikipedia.org/wiki/History_of_television -
Smart TVs
First patent for the smart tv was created (wasn't made commercially until years after). A smart tv is a tv that has integrated internet and web 2.0 features (mix of computer, tv, and set top boxes). https://en.wikipedia.org/wiki/History_of_television -
HD
The first HDTV to hit the market was made by General Instruments, Zenith, Phillips, and AT&T. HDTVs create a more crisp and clear image than other tvs due to more lines of pixels on the screen. What makes a tv a HDTV is that there should be up to 1080 lines of interlaced pixels across the screen. http://scienceillustrated.com.au/blog/technology/ask-us-how-does-hdtv-work/ https://en.wikipedia.org/wiki/History_of_television
