|
The opening of the rectangular mask is 8-1/4 x 6-1/8 inches, the "double D" is 9-1/4 x 7 inches, so neglecting the loss of information in the corners of each display, a picture displayed on the "double D" masked CRT will be about an inch larger in each axis.
I calculate about 56.4 square inches for the "double D" and about 48 square inches for the rectangular mask (50.5 - about 2-3 sq in for the rounded corners). A "porthole" display of the same diameter (aprox. 9.25") would have a display area of 67.2 square inches. Of course, considerable information would be lost at the sides and corners.
jr
Last edited by jr_tech; 04-16-2011 at 12:43 PM.
Reason: add area calculation
|