Subscribe free to our newsletters via your
. Earth Science News .

'Tunable' light bulb could improve sleep
by Staff Writers
Amsterdam, Netherlands (UPI) Nov 16, 2012

disclaimer: image is for illustration purposes only

Light bulbs from the Netherlands will not only illuminate a room but could help users concentrate, relax, read or even improve sleeping habits, experts say.

Philips Electronics has launched the Hue bulb, containing red, green and blue LEDs that can be tuned using a smartphone or tablet to fill a room with light from pure white to almost any color, reported Friday.

While Philips is marketing it as a fun technology, experts say it has intriguing possibilities for improving the lives of its users.

Research has shown that different colors of light affect a set of receptors in the eyes that respond to blue light by suppressing production of sleep-inducing melatonin, keeping people awake and alert during the blue-rich light of daytime, while reddish evening light allows people to ease into sleep.

Fluorescent bulbs contain a lot of blue light, so being exposed to them late in the day or at night can contribute to sleep problems. Many LED bulbs perpetuate the problem, because they generate white light using blue LEDs coated in compounds that emit longer wavelengths when illuminated.

NASA is developing color-tunable lights for the International Space Station because astronauts have trouble sleeping more than 6 hours a night.

The NASA bulbs are designed to switch from blue-rich to keep the astronauts alert during their working hours to red-rich light when they are preparing for their sleep periods.

Philips says studies show students perform differently in school rooms illuminated by different types of lighting -- a red-rich "relax"; a blue-infused "energize"; a milder, yellowish "concentrate"; and a "reading" blend.


Related Links
All About Human Beings and How We Got To Be Here

Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks DiggDigg RedditReddit GoogleGoogle

Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News

Photos show Einstein's brain 'different'
Tallahassee, Fla. (UPI) Nov 16, 2012
Recently discovered photographs of Albert Einstein's brain made after his death show it was unlike those of most people, a U.S. researcher says. After Einstein died in 1955, his brain was removed and photographed but many of the photos were thought to be lost for more than 55 years. Fourteen were recently uncovered by the National Museum of Health and Medicine in Silver Spring, M ... read more

Australia deports more Sri Lankans

72 tonnes of food aid for quake-struck Guatemala: WFP

High radiation found in Fukushima's fish

12 New York schools finally reopen post Sandy

Titan is also a green powerhouse

Google's Android is eating Apple's lunch

AVX Introduces SMD Tantalum Chip Capacitors For Aerospace Applications

Google's Android is eating Apple's lunch

Japan high-tech toilet maker eyes global throne

Australia imposes two-year ban on supertrawlers

Atlantic bluefin tuna catch to rise slightly

Pacific fishing zones - lifeline for overfished tuna?

Melting Glaciers Raise Sea Level

Why Antarctic sea ice cover has increased under the effects of climate change

Summer has arrived at frozen Antarctic runway

Clouds Could Explain How Snowball Earth Thawed Out

Plants and soils could exacerbate climate change as global climate warms

Desert farming forms bacterial communities that promote drought resistance

Farm injury risks increase with age

Climate change increases stress, need for restoration on grazed public lands

UN needs $79 mln for Pakistan flood victims

Movie about Asian tsunami shuns 'disaster' label

Eruption fears rise at New Zealand's 'Mount Doom'

New Zealand volcano showing activity

Ivory Coast admits possible army 'slip-ups'

Nigerian military offensive kills 'murderer of ex-general'

Dialogue 'preferred option' for Mali crisis: UN envoy

Kenya to deploy army after massacre of police

'Tunable' light bulb could improve sleep

Photos show Einstein's brain 'different'

Virtual Reality Could Help People Lose Weight and Fight Prejudice

Research suggests that humans are slowly but surely losing intellectual and emotional abilities

The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement