While often credited with creating radio, what certified technical achievement did Nikola Tesla accomplish? image
Lifted the antenna (aerial in Europe) above ground and added a ground connection thus allowing the generated power to more easily be created and sent into the air.
Discovered X-Rays and thus electromagnetic bandwidth.
Found that by putting metal foil around an oscillator, it settled down and did not impact other parts of the new radio circuits.
Created the grid, adding it to the anode and plate (triode tube, valve in Europe) allowing Amplitude Modulation.
The road sign that you see on the picture means this. image
No entry
Junction with a minor side-road
No parking
Railroad crossing
