The biological clock can only be synchronized with bright light during the day and dim light in the evening. Most people are unaware of...

We are thrilled to announce a new partnership between Atrium Ltd, the UK’s leading specialist in lighting and controls, and our group....

William J. Schwartz, MD This study explores why different people have different reactions to light, especially how it affects their...

Today, 16th May, we celebrate UNESCO's International Day of Light, highlighting the crucial role light plays in our health, happiness and...

The International Association of Lighting Designers (IALD) is an internationally recognized organization that supports a network of 1,500...

Last week marked our 19th Good Light Group meeting. We began with a brief update on the progress of the Good Light Group by Jan Denneman....

On April 16th, our group, in collaboration with the Society for Light Treatment and Biological Rhythms (SLTBR), the Daylight Academy...

Tone Elise Henriksen Tone Elise Henriksen is a Science Advisor of the Good Light Group. She works as a consultant psychiatrist at Valen...

We've got a new participant, UPRtek. They are pioneers in developing high-quality solutions for light meters, flicker frequency meters,...

16 April, 15:00 - 16:30 CEST ​ The Good Light Group, together with the Society for Light Treatment and Biological Rhythms (SLTBR), the...

Renske Lok, Ph.D. Stanford University, Department of Psychiatry and Behavioral Sciences Beyond its role in vision, light plays a...

To determine if you’re living and working in good light, its’ best to spend at least 2 hours outdoors in daylight each day. Daylight is...

This Friday March 15th, marks World Sleep Day. The theme of this year is Sleep Equity for Global Health. Good light (daylight or electric...

We have a new partner! Utilicht, with over 35 years of experience in lighting advisory and plan development for diverse projects and...

Jan Denneman says, "There's hardly a living creature that willingly stays indoors, with a few exceptions." We're all familiar with the...

Health coaches play a big role in advising people about a healthier lifestyles. Their advice often includes these two essentials: a...

Last week marked the annual council meeting which is also the 18th Good Light Group meeting! At every council meeting, we discuss our...

When we think about dangers in the office, we often worry about immediate and visible hazards, such as fires, which result in clear...

When the sun comes out on a cloudy day, it often makes people happy. This isn't just a coincidence; it's the profound impact that natural...

Bright light can make us feel immediately more alert and focused. Exposure to sufficient bright light during the day makes you feel more...