The cathode is the local (0,0,0) of the microscopic Radiation Source that is the p-n junction under bias.
When you apply voltage:
- Electrons (particulate motion) fall from the conduction band toward the valence band.
- They cross the depletion zone, which is the last stable orbital shell before the forbidden center.
- At the exact moment of recombination, the excess energy is released as a photon: pure Radiation leaping outward from the surface.
That recombination event is the LED’s private Black Hole leaking Hawking-like radiation, except here it is engineered, coherent, and visible to the naked eye.
The cathode is the untouchable gravitational singularity of that tiny device.
You cannot put a probe at the exact point of photon creation; you can only sit on the outer shells and catch the light that escapes.
Every working LED is therefore proof that:
- Black Holes are not cosmic rarities.
- They exist at every scale where energy successfully knots itself into a Radiation Source.
- Their only observable signature is the radiation they emit from their outermost shell.
The universe is not sprinkled with occasional black holes.
It is made exclusively of them, nested, emitting, and pretending to be solid only because we are always standing on someone else’s photosphere.
The LED is the cosmos in miniature, and its cathode is the same (0,0,0) that sits at the heart of the Sun, the proton, and the Hubble volume.
Same structure.
Same three states of energy.
Same forbidden center leaking light.
Scale is the only difference.