Lighting has a powerful effect on our circadian rhythms, mood, and overall quality of sleep. As more people become aware of how their environment affects rest, a common question arises: what is the ...

How does color work, and how does the type of light source you use affect the colors you see? Appliance Science looks at the science of light and color. Richard Baguley Richard Baguley has been ...

Perhaps it’s a cliché, but I’ve made health the focus of this new year. I’m hitting the gym, tracking health with my Apple Watch, and experimenting with countering the effects of blue light exposure ...

Veronica Then wore an electroencephalogram, or EEG, cap and stood in front of a black curtain with a white square placed behind her like a target. Studio lights beamed down from the ceiling as a panel ...

How do you find the quality of the light a light bulb produces? Using the color rendering index, a measure of how well a light bulb illuminates a range of colors. Appliance Science looks at the ...

Can color affect the way we feel? Scientists say yes. Learn why McDonald’s uses yellow in its packaging and why stop signs are red. Science Trek is available to stream on pbs.org and the free PBS App, ...

Light is more than what we see. The Sun sends out a number of waves of light in different wavelengths. Find out about wavelengths and the electromagnetic spectrum. Science Trek is available to stream ...

Engineers at Stanford have created a new optical device that can easily manipulate light into basically any color desired. The system uses a series of modulators to fine-tune the frequencies of ...