Arfa Daily wrote:

"Phil Allison" wrote in message
...
"Arfa Daily"
"Trevor Wilson"
snip
* LEDs use a miniscule amount of silicon.
* Incandescent lamps use a very large amount of silicon
Whereabouts ?

** The TW charlatan is being a real clever dick.

Glass is about 23% silicon by weight.


So is that *all* glass ? I can't find any reference anywhere to silicon
being a component of bog-standard glass. Is it just naturally in there, and
if so, in what form ? Or is it put in there for some reason, and for what
purpose if so ?



Got NOTHING to do with the very nasty polluting and carcinogenic
processes involved in making silicon semiconductors.



Yes, where the silicon has been extracted from whatever ore it occurs in,
and then refined


.... Phil


Arfa

Silicon and oxygen together make sand.
Glass is made from sand and a few other simple things.
No pollution,grind the glass, and (RE-)use it as sand.
Semiconducters on the other hand, have quite dirty production
methods,and eating globs of energy during the refining
stage(zone melting).
See the news about the solar cell factory(s) in China which have been
closed down....

Also, I bet there is more glass in a cfl, then in an incandescent.

The cfl's which failed me, all had the big capacitor burn out,except
one, where the tube shattered.

Last, hot semiconductors have the nasty habit of failing quickly,
so I kind of do not believe those stories about the very long lifetimes
for cfl an leds, heat kills quickly.
Once they are able to produce a lightsource which stays cool,
and is efficient, I will start believing those long lifetimes.