November 2007
Intermediate to advanced
736 pages
46h 32m
English
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CAMERA TUBE CHARACTERISTICS
One important characteristic of all camera tubes is their light transfer characteristic. This is the ratio of the face plate illumination in foot candles to the output signal current in nanoamperes (nA). This characteristic may be considered as a measure of the efficiency of a camera tube. Typical values of output current range from 200 nA to 400 nA.
The term gamma, in a television system, is applied to camera tubes and to picture tubes. Gamma is a number which expresses the compression or expansion of original light values. Such variations, if present, are inherent in the operation of the camera tube or picture tube.
With camera tubes the gamma value is generally 1. This value represents a linear characteristic that ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.