UCLA researchers create highly transparent solar cells for windows that generate electricity

[PamW]

14. WRONG!!! WRONG!!! WRONG!!!

You don't understand why objects are the color they are. Evidently you've never studied quantum mechanics.

It has to do with the energy levels of the electron orbitals in the object's atoms. Let's say we have 3 levels; a ground state and two excited states.

Level 3 ---

Level 2 ---


Level 1 ---


Suppose the difference in energy between level 1 and level 3 corresponds to blue light. Suppose the difference between level 2 and level 3 corresponds to yellow light, and the difference between level 1 and level 2 corresponds to green light.

Then the atom can absorb a photon of blue light and an electron moves from level 1 to level 3. That electron then falls to level 2 and emits a photon of yellow light. The electron then falls back to ground state going from level 2 to level 1 and emits a photon of green light.

That's how an element absorbs blue, and then emits yellow and green.

Teachers often tell the scheme you did to elementary school children; but it's actually WRONG!!

Word to the wise; don't try to contradict a PhD Physicist like myself on the subject of Physics when your knowledge of the subject is grade school level.

PamW