"The parent post already stated HPS and LED lights have near the same efficiency..."
The parent post is wrong. Wikipedia is a horrible source for the rapidly-evolving world of semiconductor lighting. I've already got LEDs with 200+ l/w efficiency (Cree MK-R.) In single color LEDs, going to equal weighting and ignoring the weighting of green, you might as well just say 330+l/w, which is double any HID (excepting the almost pure-green low pressure sodium lamp, which can do 220+ l/w.)
Only in their more inefficient ranges like 250 and 400w. 600w can get up to 160l/w.
"LEDs, while capable of much more efficiency when operated at currents below their maximum ratings, usually operate near the same 100lm/W efficiencies when operated at maximum current"
Current LED tech is 130+ l/w and Cree's already popped 200+ at room temp 5600K 80mA drive with their MK-R, and in the lab, they've already hit 303+ at room temp 5150K color temp and 350mA drive.
" But a 400W LED fixture would produce nearly the same heat overall. It just wouldn't get as hot;-) "
Comparing 400w HID to 400w LED, full power, the LED will produce on average 15-20% less heat, with that heat difference made up as light output.
Many people think a light is either specifically for hydroponics or soil. It's neither. It is a horticultural light. It will grow anything that will grow under the sun, regardless of hydro or soil.
First, I'm mocking the term 'hydroponic light' as if the water were generating light. Then I go on further to explain that the only way they'd get light from a liquid that would even be usable enough for horticulture would have to be produced by sonoluminescence, which is highly inefficient and wouldn't produce the kind of heat (let alone light) an HID bulb would do, which is how these people are getting caught by drones using infrared thermal cameras.
It's a video chat. They see me talking and responding to non-visual stimulus and it's pretty fucking obvious.
"what is "perfect" sign language?"
Anything they can understand.
"you sound like you're just making shit up.."
You sound like you don't actually work with some of these services to provide high-speed high-framerate international deaf communications networks. I do, on the other hand.
Simply put, I run several rooms on the site. The rational deaf people come in and act like normal humans. Then they invite me over to another room, run by deaf people. Oh shit, a hearing person! BANBANBAN.
Perhaps you wouldn't look so stupid if you actually used the service I speak of.
Plenty of graphite-based heat sink solutions that work better than copper. I've got a graphite-core aluminum fin LGA775 heat sink. Tears up my solid copper Itanium II cooler.
".except what we find out is that actually you only have just enough knowledge to look stupid because you overlooked important details such as the obvious limitations imposed by having your radiator mounted directly on the device being cooled."
Yet you'll gladly stuff that radiator INSIDE THE COMPUTER CASE and cause premature heat failure of other components inside, like your motherboard.
Slashdot Mirror
"The parent post already stated HPS and LED lights have near the same efficiency..."
The parent post is wrong. Wikipedia is a horrible source for the rapidly-evolving world of semiconductor lighting. I've already got LEDs with 200+ l/w efficiency (Cree MK-R.) In single color LEDs, going to equal weighting and ignoring the weighting of green, you might as well just say 330+l/w, which is double any HID (excepting the almost pure-green low pressure sodium lamp, which can do 220+ l/w.)
"HPS is in the >100 lumen/watt ballpark"
Only in their more inefficient ranges like 250 and 400w. 600w can get up to 160l/w.
"LEDs, while capable of much more efficiency when operated at currents below their maximum ratings, usually operate near the same 100lm/W efficiencies when operated at maximum current"
Current LED tech is 130+ l/w and Cree's already popped 200+ at room temp 5600K 80mA drive with their MK-R, and in the lab, they've already hit 303+ at room temp 5150K color temp and 350mA drive.
" But a 400W LED fixture would produce nearly the same heat overall. It just wouldn't get as hot ;-) "
Comparing 400w HID to 400w LED, full power, the LED will produce on average 15-20% less heat, with that heat difference made up as light output.
"apparently you have no idea just how much heat LED arrays put out."
I design LED systems globally, son.
Try again when you know who you're talking to - THE LED expert on this site.
And a hydroponics light is a bullshit term because there is no specific light for hydroponics alone.
Many people think a light is either specifically for hydroponics or soil. It's neither. It is a horticultural light. It will grow anything that will grow under the sun, regardless of hydro or soil.
The joys of misleading marketing.
I think you're not understanding my words.
First, I'm mocking the term 'hydroponic light' as if the water were generating light. Then I go on further to explain that the only way they'd get light from a liquid that would even be usable enough for horticulture would have to be produced by sonoluminescence, which is highly inefficient and wouldn't produce the kind of heat (let alone light) an HID bulb would do, which is how these people are getting caught by drones using infrared thermal cameras.
"They require hydroponic lights for the marijuana plants to grow"
What the fuck is a hydroponic light? Are we talking sonoluminescence or what? That's gotta be inefficient.
You mean an HID light, which produces tons of heat and is easy traceable from both ballast noise and heat.
Shoulda gone LED, suckers.
"For instance, Gmail was limited access at first and you had to be invited to join. I see that you are using a gmail account."
Which was created well after beta/limited access.
" I have not seen any direct quote from her that indicates an opposition to the principle of vaccines or the efficacy of all vaccines. "
Then you obviously didn't pay one fucking lick of attention when she was on TV for several years, spewing her medically-unsound bullshit.
" Why bother nit-picking nuances or perceived contradictions in wording."
Ain't shit perceived. It's plain as fucking day to anyone who's read her bullshit diatribes over the years.
She's trying to pull back the bullshit she's said.
" Her general position that she is not against vaccines in general but only against un-safe vaccines is a valid position."
No, it's back-tracking on her own shilled and uninformed LIES.
" The only issue is: Are existing vaccines safe and could they be made safer? All else is nonsense."
Son, we were using MERCURY-BASED VACCINES for decades. I'll guarantee you McCarthy had some of those very vaccines.
This is pure hypocrisy and back-tracking because her ass has been caught in the biggest lie she's ever lived.
Whomever modded you up isn't very bright.
This Masonic exclusivity bullshit is the exact reason I got turned off of Glass in the first place.
"how do they find out you can hear?"
It's a video chat. They see me talking and responding to non-visual stimulus and it's pretty fucking obvious.
"what is "perfect" sign language?"
Anything they can understand.
"you sound like you're just making shit up.."
You sound like you don't actually work with some of these services to provide high-speed high-framerate international deaf communications networks. I do, on the other hand.
Do you even know how Camfrog works?
No? Be quiet until you do.
Simply put, I run several rooms on the site. The rational deaf people come in and act like normal humans. Then they invite me over to another room, run by deaf people. Oh shit, a hearing person! BANBANBAN.
Perhaps you wouldn't look so stupid if you actually used the service I speak of.
If you need your emails regarding legal matters, throw a subpoena duces tecum at them.
They'll unlock those accounts so goddamned quick, lest they be held in contempt of court.
"I would like you to prove your point that deaf people are considering themselves as superior to hearing people"
Go get yourself a Camfrog account and go into a deaf room.
Won't take you more than about 15 seconds to get kicked out once they find out you can hear, no matter if you can do perfect sign language.
"They look at those that get implants as traitors."
Yep, see this on Camfrog all the time. The sheer ignorance of it all is absolutely astounding.
I'd been talking about Novec 1230 being used as a computer coolant for years on this site. Prior art all over the fucking place.
That would actually be a much more feasible use for this, at least for certain ranges of speed at certain altitudes.
" Not only is this obviously breathtaking, but when it comes to off-roading—or parking in tight urban spaces—this could change the game."
Not when the people using said vehicles aren't even familiar with the basics on how to handle and maneuver.
If you need assistance to parallel park in a tight urban space, you either need a smaller vehicle, or you need to call a cab or walk.
On top of that, you shouldn't have been given a license in the first place.
You'd thaw the entire Nordic region with like two of these and an nVidia 9800.
I have one case with liquid cooling, and old Smilodon.
I get better cooling with my graphite-core aluminum fin spreader, outperforming a solid copper Itanium II heat sink.
Come back when you have to deal with 1,000w in a 50mmx50mm package and need to keep junction temps BELOW 50C.
Not really, due to how carbon fibers tend to conduct and radiate heat - only at their ends.
Plenty of graphite-based heat sink solutions that work better than copper. I've got a graphite-core aluminum fin LGA775 heat sink. Tears up my solid copper Itanium II cooler.
"Honest question: how would you build a consumer system that doesn't rely on air cooling eventually?"
You don't, pretty much, excepting what you've listed (heat sinking to earth, evaporative cooling.)
".except what we find out is that actually you only have just enough knowledge to look stupid because you overlooked important details such as the obvious limitations imposed by having your radiator mounted directly on the device being cooled."
Yet you'll gladly stuff that radiator INSIDE THE COMPUTER CASE and cause premature heat failure of other components inside, like your motherboard.
BRILLIANT!