I've often wondered with these pre war TVs that used a mirrow to view the picture...does this mean that any writing appearing on the screen apprears backwards? Or does it appear backwards on the tube and so when vioewed by the mirror appears the right way? Great demonstration BTW.
As you guess, the image on the CRT is upside-down, and back-to-front, so that when it is reflected in the 45 degree mirror it appears correct. BTW. the reason the mirror is used is because the CRT is very long (they had a 40 degree deflection angle). If viewed directly the television would need to be very deep. Instead. it is mounted vertically, the base of the tube on the floor of the cabinet.
Lovely old TV this, thanks for posting. Its great to see such an old set running and giving such a good picture.
atlantic1952 1 year ago
I've often wondered with these pre war TVs that used a mirrow to view the picture...does this mean that any writing appearing on the screen apprears backwards? Or does it appear backwards on the tube and so when vioewed by the mirror appears the right way? Great demonstration BTW.
SwingBandHeaven 1 year ago
@SwingBandHeaven
As you guess, the image on the CRT is upside-down, and back-to-front, so that when it is reflected in the 45 degree mirror it appears correct. BTW. the reason the mirror is used is because the CRT is very long (they had a 40 degree deflection angle). If viewed directly the television would need to be very deep. Instead. it is mounted vertically, the base of the tube on the floor of the cabinet.
405linesystem 1 year ago