Follow Slashdot stories on Twitter

 



Forgot your password?
typodupeerror

Slashdot videos: Now with more Slashdot!

  • View

  • Discuss

  • Share

We've improved Slashdot's video section; now you can view our video interviews, product close-ups and site visits with all the usual Slashdot options to comment, share, etc. No more walled garden! It's a work in progress -- we hope you'll check it out (Learn more about the recent updates).

×

+ - New LED puts out more power than it consumes-> 1

Submitted by
Entropy98
Entropy98 writes "MIT physicists have managed to build a light-emitting diode that has an electrical efficiency of more than 100 percent, without breaking the laws of physics. The LED produces 69 picowatts of light using 30 picowatts of power, giving it an efficiency of 230 percent. That means it operates above "unity efficiency" — putting it into a category normally occupied by perpetual motion machines.

However, while MIT's diode puts out more than twice as much energy in photons as it's fed in electrons, it doesn't violate the conservation of energy because it appears to draw in heat energy from its surroundings instead. When it gets more than 100 percent electrically-efficient, it begins to cool down, stealing energy from its environment to convert into more photons."

Link to Original Source
This discussion was created for logged-in users only, but now has been archived. No new comments can be posted.

New LED puts out more power than it consumes

Comments Filter:

Who goeth a-borrowing goeth a-sorrowing. -- Thomas Tusser

Working...