On 04/10/2019 23:54, Dave W wrote:
Light has a power but it's miniscule.

No, it isnt.

Solar panels at midday work.
Sunlight in the tropics at midday us around 1KW/sq m.


Complicated physics theory might
explain how the light is produced and why so little of it,

It isn in the case of LEDS quite a lot. IIRC 10% efficient or thereabouts.

the current knock electrons into higher orbits, as they fall back they
emit photons.

but we
lesser mortals wouldn't be able to understand it.

Nobody understands anything completely


--
There is something fascinating about science. One gets such wholesale
returns of conjecture out of such a trifling investment of fact.

Mark Twain