Yes, maybe it's hard to photograph because, not only is there no image storage whatsoever, but the travelling 'spot' of light building up the raster is a reflected virtual image and positioned as far behind the screw as the lines-of-light are in front.
There were two demos of an analogue TV channel over a light beam at Eastwood. I lost the beam during the second (Ch. E3/colour) and was on the point of giving up. It was only thanks to help from another member (David Gentle) that the situation was saved. The beam looks the same (steady) whether or not it carries RF modulation and I actually thought the modulator had failed.
Steve
There were two demos of an analogue TV channel over a light beam at Eastwood. I lost the beam during the second (Ch. E3/colour) and was on the point of giving up. It was only thanks to help from another member (David Gentle) that the situation was saved. The beam looks the same (steady) whether or not it carries RF modulation and I actually thought the modulator had failed.
Steve
