Lynn waved his hand, precisely splitting open the casing without harming the internal structure, and then began explaining its operating principle to everyone.
The so-called filament was not made of a fire lion's hair but of tungsten wire, which would convert electrical energy into thermal energy when electrified, thereby heating the cathode and emitting a large number of electrons.
These electrons were blocked by the grid, and by adjusting its position relative to the cathode, the quantity of electrons passing through could be controlled. Finally, an electric field generated at the anode would accelerate them, the deflection coils would adjust their direction, and then they would be emitted one by one.
Lynn's explanation was highly professional, and many terms confused the Wizards present, fortunately, they understood the last part—the star of Magic had found a way to emit individual electrons and was preparing to use it for an experiment.