Friday, February 13, 2009

LEDs, lamp life, and energy

NYT has been running a series of articles on LEDS. Here are some pertinent to our discussions yesterday, during the field trip to Vanstory.

How Long Did You Say That Bulb Would Last?
This article takes a look at the claim by LED manufacturers that LED lamps last 25,000-50,000 hours. What does it mean and how does it compare to other lamps?

Do Energy-Saving LED Lamps Save Energy?
This article presents the following questions: If LEDs are more efficient to use because they consume less power, is the process of manufacturing LEDs also as energy efficient compared to other lamps?

LED’s Good Housekeeping Seal
This article talks about the certification "future" of LEDs.

Friday, February 6, 2009

Thursday, February 5, 2009

Scientists Create a Black That Erases Virtually All Light

The article above discusses the invention of the blackest material till date that reflects only 0.045% of visible light! Compare it to the black surfaces that we saw in Jonathan and team's model!