The General Chit Chat Thread 2

[Saras]

Fine, I read it to the end.
I don't really see it being useful in lighting. While theoretically interesting, it doesn't look like it will scale nicely.
It could potentially be used for refrigeration in space thought. Depending on the numbers.


Anyway, that's still a big claim. I would prefer to wait and see someone else recreate those leds and get comparable results.


As for the prices of education in Canada. 2.5-3.7 grand/year still seems doable thought. While it will still lead to debts, these aren't exactly nigh unpayable decade long mortgages either. Universities in Lithuania cost about as much. We still survive and we still have a shitload of students.

[froody1911]

I don't really see it being useful in lighting.

On the contrary, many major electric companies have been attempting to replace light bulbs with LEDs as standard lighting for quite some time now.
In fact, that article even linked to another article that somewhat explains this: http://www.wired.co.uk/magazine/archive/2011/10/features/let-there-be-led

[Saras]

I don't really see it being useful in lighting.

On the contrary, many major electric companies have been attempting to replace light bulbs with LEDs as standard lighting for quite some time now.
In fact, that article even linked to another article that somewhat explains this: http://www.wired.co.uk/magazine/archive/2011/10/features/let-there-be-led

LED's yes. All my lights bulbs are already LED's and it's not rare either.

However, using ambient heat from the enviroment to achieve >1 energy rating on macroscale structures isn't that likely.

[Burkingam]

69 picowatts is almost nothing. That's like 0,000000000069 watts.

[undetz]

That just means you need a lot of them.

[Saras]

That just means you need a lot of them.

You can't put a lot of things close together that require heat to function. That's the problem. Unless you use some kind of a reactor as the base. 300K environment is hardly energetic enough for that.

Oh and the final size of the diode was not stated, they reduced the band, but there was no mention about anything else.

[Havoc10K]

It's a start at least, human civilization produces a lot of heat that is not being used, it's about time we started considering using all that heat fro SOME purpose other than pollution into atmosphere where it heats the gasses and boosts global warming, even a nano percent increase will have it toll in the later future. If this will be one step into preserving energy loss and increase energy gain in even not so distant future, it's better than wasting that energy at all.

If you know what I mean.

[Burkingam]

It's a start at least, human civilization produces a lot of heat that is not being used, it's about time we started considering using all that heat fro SOME purpose other than pollution into atmosphere where it heats the gasses and boosts global warming, even a nano percent increase will have it toll in the later future. If this will be one step into preserving energy loss and increase energy gain in even not so distant future, it's better than wasting that energy at all.

If you know what I mean.

The heat produced by men doesn't have a significant effect on climate. Global warming is the result of the greenhouse gases, not our waste heat.

[Havoc10K]

Greenhouse gasses, CO2, produced mainly by factories, built and produced by MEN, surprised ?

[Burkingam]

Exactly, it's caused by the GASES we emit not by the heat we produce as you are suggesting.

(click to show/hide)

It's a start at least, human civilization produces a lot of heat that is not being used, it's about time we started considering using all that heat fro SOME purpose other than pollution into atmosphere where it heats the gasses and boosts global warming, even a nano percent increase will have it toll in the later future. If this will be one step into preserving energy loss and increase energy gain in even not so distant future, it's better than wasting that energy at all.

If you know what I mean.

As I said, no the heat we produce doesn't have a significant effect on climate, only the greenhouse gases.

[pingryanime]

Humans can fix that, though.

Or at least amend it a bit.

[Dale08]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

[froody1911]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

4/10

[undetz]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

[Insert generic comment about your mom's sucking skills]

[Soryon]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

but... Oxygen is a gas =/

[Burkingam]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

Midget unicorn?

[Havoc10K]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

I'll take you serious and answer you seriously, we would die.

[Saras]

It's a start at least, human civilization produces a lot of heat that is not being used, it's about time we started considering using all that heat fro SOME purpose other than pollution into atmosphere where it heats the gasses and boosts global warming, even a nano percent increase will have it toll in the later future. If this will be one step into preserving energy loss and increase energy gain in even not so distant future, it's better than wasting that energy at all.

If you know what I mean.

The heat produced by men doesn't have a significant effect on climate. Global warming is the result of the greenhouse gases, not our waste heat.

It does have a regional effect thought. Cities tend to be about 2 degrees warmer than the surrounding areas.

[Burkingam]

It's a start at least, human civilization produces a lot of heat that is not being used, it's about time we started considering using all that heat fro SOME purpose other than pollution into atmosphere where it heats the gasses and boosts global warming, even a nano percent increase will have it toll in the later future. If this will be one step into preserving energy loss and increase energy gain in even not so distant future, it's better than wasting that energy at all.

If you know what I mean.

The heat produced by men doesn't have a significant effect on climate. Global warming is the result of the greenhouse gases, not our waste heat.

It does have a regional effect thought. Cities tend to be about 2 degrees warmer than the surrounding areas.

Mainly because concrete's albedo tend to be lower than grass' albedo.

[Ixarku]

What if we built a giant vacuum and sucked all of the gases on Earth into Space?

Mega Maid, your tax dollars at work.