News tagged with visible spectrum

The difficulties of cataloging dark nebulae

E. E. Barnard is an astronomer perhaps best known for measuring the proper motion of a faint red dwarf about six light years away, now known as Barnard's star. But Barnard was also a pioneer of astrophotography, ...

Oct 06, 2014
3.8 / 5 (4) 1

Looking at Jupiter's radio frequencies

In the visible spectrum, Jupiter is a bright, star-like point in the night sky. Viewing it with the naked eye, it would be easy to confuse it with a star except for the fact that it doesn't twinkle. At radio ...

Sep 10, 2014
5 / 5 (3) 0

Video: Sprites, gravity waves and airglow

Look! Fast! Sprite lightning occurs only at high altitudes above thunderstorms, only last for a thousandth of a second and emit light in the red portion of the visible spectrum, so they are really difficult ...

Sep 05, 2014
5 / 5 (2) 0

Two for one in solar power

Solar cells offer the opportunity to harvest abundant, renewable energy. Although the highest energy light occurs in the ultraviolet and visible spectrum, most solar energy is in the infrared. There is a ...

Nov 17, 2013
4.9 / 5 (21) 0 | with audio podcast