Piping in sunlight question? - Page 2

 

David O'Daniel wrote:

Ever look through thick glass? How it looks green? Now imagine that
glass being miles thick. The light diminishes into uselessness. The
reason fiber optic networks work is that at intervals where the light is
about to become useless for data transmission, they put in a
relay-amplifier, to boost it. These amps would reduce efficiency in what
you propose so much as to make it cost prohibitive.

 

<Guido wrote>:
"Ever look through thick glass? How it looks green? Now imagine that
glass being miles thick. The light diminishes into uselessness. The
reason fiber optic networks work is that at intervals where the light is
about to become useless for data transmission, they put in a
relay-amplifier, to boost it. These amps would reduce efficiency in what
you propose so much as to make it cost prohibitive."

<Bo>: Thanks for responding, Guido. Yes, even in air there is filtering
down of light. Thus why I was thinking of the tubes being used be sealed
vacuums, with only the lenses at either ends being direct material.
Though then the sides would still absorb some of the light energy as
heat as the light expanded, I suppose.

So there would be loss unless the light could be focused to a pin-point
for the full spectrum of sunlight or the reflective surface so efficient
as to absorb a minimal amount as heat. Also then, the straighter the
tube, it would seem the less light would hit the sides but that is just
an assumption & depending on how narrow the light can be focused. Though
perhaps even if only a limited wavelength could be send for miles in a
straight line, could it then still be useful on the other end to
generate electricity or at least use as light directly for such as
street-lights?

Perhaps the heat on the tube itself could be made useful, at least in
winter. Its still an idea in progress and again, probably just
speculation on an idea that will never really be even considered to be
built anyways. Just thinking.


Bo

 

On Apr 28, 6:27am, Bojut...@webtv.net (David O'Daniel) wrote:

Lotsa flaws. - Learn more optics and physics.
Those 'tube's only work for short distances and limited power
densities.