Quote:
Originally Posted by patrickt
The screen measuring standard is silly ...
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It's not silly and it is the way electronic displays (TVs, Computer displays, Oscilloscopes, ...) have been measured since the beginning.
Originally, it was the measurement of the diameter of the face of the CRT display tube. The functional size of the rectangular image was somewhat smaller. "Evolution" brought the shape of the tube closer to that of the image and eventually the tube was replaced by other electronic components. The only thing that has changed about the sizing in nearly 100 years is that the rated size is now a rather accurate measure of the visible size.