The ocean is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see. When sunlight hits ...

Surprisingly, some of the universe's brightest objects are black holes. As scorching gas and dust flow around and into a black hole, they glow with fierce intensity across the light spectrum. Now, a ...

(Phys.org)—There are many different ways to generate a hologram, each with its own advantages and disadvantages. Trying to maximize the advantages, researchers in a new study have designed a hologram ...

Ultraviolet has very short and energetic wavelengths that are shorter than violet on the visible spectrum. But can people see UV? When you purchase through links on our site, we may earn an affiliate ...

Michael Freeman is a founder of The Skin Centre, a private dermatology practice on the Gold Coast, Queensland. The centre has developed its own range of skincare products. Blue light is part of the ...