Mariana Figueiro, Light and Health Program Director at the Lighting Research Center (LRC) and Professor at Rensselaer Polytechnic Institute, reveals surprising facts about the effects of light - its presence, its absence, and its patterns - on human health.

Video #1 in a series of 9. Dr. Mariana Figueiro gives a brief overview of human circadian rhythms, why they're important, and the need for staying entrained with lighting. This video is sponsored by the Light and Health Alliance at the Lighting Research Center, Troy, NY and the National Institute for Occupational Safety and Health (NIOSH), Grant 1R01OH010668.

Hör miljöpsykologen Thorbjörn Laikes kortföreläsning under "Ljuset från Lund" den 15 december, en inspirations- och kunskapsdag om ljus och belysning med hållbara förtecken. Arrangör: Utmaning hållbart Lund. Han berättar bland annat om studien som visat att elever får fler rätt på proven om de har rätt ljus i skolsalen.

Lecture from the 6th VELUX Daylight Symposium "Daylight as a driver of change" that took place in London on 2-3 September 2015. For more information visit http://thedaylightsite.com ABSTRACT It has been hypothesized that daylight exposure might be essential for the regulation of circadian rhythms and sleep/wake patterns.

Hillevi Hemphälä forskar i ljuslaboratoriet på Designvetenskaper, LTH, och berättar om hur vår ljusmiljö bäst kan utformas för att minimera ohälsa.

This talk was given at a local TEDx event, produced independently of the TED Conferences. How modern life is disturbing our vision and how to reduce the strain. When you look at a photograph of a car crash you find it unpleasant because of the pain and suffering that the photo represents.

Not only are small, energy efficient LEDs used in almost every piece of modern electronics, they have the greatest potential impact on energy savings globally. But LEDs didn't have much use until the '90s, when Japanese scientists discovered the missing link needed to complete the color spectrum: The blue LED.

The Flicker Tester app for iPhone from Viso Viso systems, makes it possible for the first time to measure flicker coming from LED light sources and LED video screens. The app will give you directly flicker index, flicker percentage and flicker frequency values including the full flicker curve. https://itunes.apple.com/us/app/flicker-tester/id893931726?mt=8&ign-mpt=uo%3D4