THE colour of the light which is emitted from the capillary of a vacuum tube containing pure hydrogen is the familiar vivid, deep pink, the prevailing tint being due to the predominating ...

How can we measure visible light? The electromagnetic spectrum includes all forms of light energy, known as electromagnetic radiation. (1) Different types of electromagnetic radiation such as radio ...

How about being able to see things normally completely outside the visual spectrum, like hydrogen combustion or ... entirely outside of the normal visible spectrum – in other words, seeing ...

They're your eyes, and they receive signals that fall in the range of visible ... spectrum. Here's a tour that begins with radio waves and takes you through microwaves, infrared radiation, light ...

The planet WASP-121b is extreme. It's a gas giant almost twice as big as Jupiter orbiting extremely close to its star–50 ...

Astronomers have debated for years whether these planets have hydrogen-rich atmospheres ... They scatter and absorb light most efficiently at shorter wavelengths (like visible or ultraviolet ...

This is the most likely reason that earlier searches for extraterrestrial intelligence were conducted in the radio portion of the light spectrum instead of the visible portion of the light spectrum.

There are three primary colours of light, which can be combined to make secondary colours. A rainbow contains all the colours of the visible spectrum. It is often possible to see a secondary bow ...