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Paul Nipkow's Disk
The device was used for general entertainment because people could see images that had been processed. The power source is electricity which initiates the scanners.The function of the device is to understand and process images. It is the first television and because there were none before it, it had nothing to improve on. -
Paul Nipkow's Disk (cont.)
One advantage is that the sensor is a photocell device. This means that there can be a higher resolution. Another advantage is that there is a light sensitive devic. Because of this less light has to be used. One disadvantage is that when an image is processed it is not linear. This means that it is not straight. The last disadvantage is that the disk is very large. Because of that it is very hard to handle. -
Philo Farnsworth's breakthrough
The function of the device is to transmit electricity into images. The power source of the device is common electricity. As the other one the need met is entertainment because you get to see a picture. The improvement from the previous device is that in this one the picture is much more clear. An advantage of the device is that the quality is better. Also it is more efficient. There is only one disadvantage, the cost is a lot more than the older one. -
Charles Jenkins "radiovision"
The function of the device was to mechanically transmit images from one place to another. The power source of the device is a little bit elctricity.It is used for entertainment as all the others.The improvement is that the other ones are operated electrically. This is operated mechanically. The 2 advantages are efficiency and power. The 2 disadvantags are the cost and time to assemble. -
John Baird expands on Radiovision
The device is used for showing images on a screen. The power source is the same as jenkins (a little electricity).The need met by the device is entertainment because it creates images.The improvement is the time to build because this takes less time.The 2 advantages are the quality and speed. The 2 disadvantage are the cost and range of transmission. -
Vladimir Zworykin Invents the Cathode Ray Tube
The device is used for transmission of images.The power source is electricity.The need met by the device entertainment.The improvement is the quality of the images. The 2 advantages are cost and power. The 2 disadvantages are efficiency and speed. -
