Comments on Purdue LED Us to More Efficient Lighting, Less Mercury

Science!

Hooray! I hate having my living room with the same light color quality as the inside of a Fred Meyer store.

LED's can also operate on a dimmer without having to jump through any extra hoops (yes, there are dimmable fluorescents, but they suck).

Some comments:

Awesome!

I'm from Indiana, so way to represent the Crossroads of America, Purdue! For reals.

My partner is a materials science and engineering prof, so this is cool to *both* of us.

Mahtli69:

The color spectrum of white LEDs still suck relative to tungsten (traditional) bulbs--far too cold for most people's taste.

But, most of the spiffy lighting effects on the 787 are courtesy of LEDs, so who knows.

Balt-O-Matt:
Purdue is pretty sweet, as are Material science engineers. God bless and keep them both.

In my role as pedant, isn't it "emitting" not "emanating"?

Urp. Correct leek. Now I'll correct.

Cheap LED lighting!  Wo0t!  Woo-hoo!  And did I mention WOOOOOOOOOOOOOO-hooooty-hoo-hoo!!!?

But from Purdue?  Crap; now I'll never get anyone to spell my name right.

I like the color of my solar/LED yard lights. They're the color of moonlight.

What kind of cretin hates moonlight?

GE is ramping up LED production as we speak, and it's expected to be huge in their profit forecasts as we move into the next decade.

I dunno, I got some LED bulbs a year or so ago, and they really suck, both in light intensity and quality. I had really high hopes, and they are crushed and leaking toxics, like a compact fluorescent in the trash ...

Moonlight fucking sucks, Elenchos. God, how I hate it. Moonlight is like Hitler as far as I'm concerned.

Sounds to ME like elenchos wants to ruin the mystique and romance of moonlight by replicating it throughout our homes. NEVER!

As a Hoosier, I take offense at your comment about nothing good coming from Indiana.

I give you, alphabetically: Birch Bayh, Hoagy Carmichael, James Dean, Eugene Debs, Theodore Dreiser, Florence Henderson, Alfred Kinsey, Sean Kemp (wasn't he a Sonic?), David Letterman, Carole Lombard, John Mellencamp, Cole Porter, Knute Rockne and Kurt Vonnegut.

There are many many others. Before you besmirch an entire state (even one so seemingly backwards as mine), please check wikipedia: http://en.wikipedia.org/wiki/Indiana#Famous_Hoosiers

Granted, we can't lay claim to Dan Savage, Eddie Vedder, or seemingly, most of the staff of The Stranger, but neither can Washington.

I'll take a "wait and see" here. All the "super-bright" LED's I've bought can't hold a candle to a single match. But if this does come on-line and is any good, it will do so about the time all my CFL's go kaput.

Go Boilermakers!

DMC - How can you leave out three of the most famous Purdue Alum: Neil Armstrong (first man on the moon), Gene Cernan (last man on the moon), and Orville Redenbacher (the king of popcorn)!

I didn't say you should buy them today, but starting around 2010 they will be in such volumes that the price should be way way cheaper per lumen per watt than anything else.

Out of South Bend, I give y'all Umphrey's McGee.... the best damn band to go follow these days.

Thank you #13.

. . .and don't forget the Indy 500. . .the greatest spectacle in racing!

Hopefully Evan will be Obama's VP too!

@13 - And don't forget John Wooden, Purdue alum and the Wizard of Westwood, who coached UCLA to 10 national titles.

As a Hoosier, I praise all the Indiana recognition going on here.

However, as a graduate of Indiana University, I can assure you these Purdue lightbulbs will smell like cow ass when they are left on too long.

Carry on.

Elenchos @8 has uncovered the conspiracy. To wit, the chorus of Indiana's state song:

Oh, the moonlight's fair tonight along the Wabash,
From the fields there comes the breath of newmown hay.
Through the sycamores the candle lights are gleaming,
On the banks of the Wabash, far away.

Love it or hate it, it is now clear that the Purdue team's goal was to replicate moonlight everywhere. I wouldn't be surprised if the bulbs smelled like newmown hay if you left them on for a while.

Jonathan, agreed, affordable bright LED's are better than CFL's in almost every way but CFL's use far less electricity than conventional. Since most of our electricity is currently made from coal over their lifetime CFL's keep 10 times as much mercury out of the atmosphere as they contain. No doubt their's some risk but more and more places are recycling them, including every Ikea location, so it's getting better. They're not ideal but they're a good step on the way to ideal.

Sapphire is doped aluminum oxide, and the sapphire used to make LEDs is synthetic. Don't sensationalize it. Silicon comes from sand, but the energy required to get the oxygen out is not exactly cheap either. Both silicon and aluminum are very common elements in the earth's crust.