by Harry Dalek » Sat Aug 01, 2020 12:04 am
Looking at the television concept 1894 noticing the neon lamp some thing is up here as to the invention of the neon lamp cold cathode neon came much later how is this possible.....it does say in the 1894 concept equivalent of a neon so another gas or some one was speculating and wrote it in later / so a Geissler tube of some sort .
In 1857 the German physicist and glass blower Heinrich Geissler came up with a way of filling a partially evacuated glass tube with a range of gasses. Depending on which gas was used each would glow a different colour when connected to a high voltage electric supply.
The discovery of neon in 1898 by British scientists William Ramsay and Morris W. Travers included the observation of a brilliant red glow in Geissler tubes. Travers wrote, "the blaze of crimson light from the tube told its own story and was a sight to dwell upon and never forget.
Georges Claude
Inspired by Geissler tubes and by Daniel McFarlan Moore's invention of a nitrogen-based light (the "Moore tube"), Claude developed neon tube lighting to exploit the neon that was produced as a byproduct of his air liquefaction business.[10] These were all "glow discharge" tubes that generate light when an electric current is passed through the rarefied gas within the tube. Claude's first public demonstration of a large neon light was at the Paris Motor Show (Salon de l'Automobile et du Cycle), 3–18 December 1910.[11][12] Claude's first patent filing for his technologies in France was on 7 March 1910.
THE FATHER OF THE NEON LIGHTBULB: DANIEL McFARLAN MOORE
Moore's lasting legacy was his 1920 invention of the glow lamp. These small, low power devices use a physical principle called "coronal discharge." Moore mounted two electrodes close together in a bulb and added neon or argon gas improved the neon lamp for television around the time Baird stated experimenting .
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.