My last chat with Gary had me wondering if it were possible that the people trying to do television in the late 1880s could of made a working one with out electronics all failed because of no electronics for an amplifier ,the magnetic amplifier and diodes were there at the time late 1880s so it could of been done i think not an electronic television but an electric television.
The diode is the very first semiconductor and was about at the time so that makes it still possible .
Reading that the use of diodes increases the amplification with the transformer to a point where it might very well work.
The catch to magnetic amplifiers is they need AC to work so the frequency of the transformers need to be high enough to work for a television idea ,i think the link below hes circuit running at 35 khz should be ok for the video band width
http://sparkbangbuzz.com/mag-audio-amp/ ... io-amp.htm
Now this fellows very interesting experiments with magnetic amplifiers show some nice examples.
The generating of the AC frequency would have to be made mechanically i think for the time.
Reading about the magnetic amplifier if the valves were not invented when they were perhaps the electric radio and television might of come about.
When i have time i wouldn't mind playing around with the idea.
The electromagnetic spectrum has no theoretical limit at either end. If all the mass/energy in the Universe is considered a 'limit', then that would be the only real theoretical limit to the maximum frequency attainable.