spectrum

Cosmologist Thinks a Strange Signal May Be Evidence of a Parallel Universe

In the beginning, there was chaos. Hot, dense, and packed with energetic particles, the early Universe was a turbulent, bustling place.…

6 years ago

Why Aren’t There Eclipses Every Month?

If the Sun, Earth and Moon are lined up, shouldn't we get a lunar and solar eclipse every month? Clearly,…

6 years ago

The Resplendent Inflexibility of the Rainbow

Children often ask simple questions that make you wonder if you really understand your subject.  An young acquaintance of mine…

6 years ago

A Red Moon – NOT a Sign of the Apocalypse!

On most evenings, the Moon will appear as a bright yellow or white color in the night sky. But on…

7 years ago

Moonlight Is a Many-Splendored Thing

"By the Light of the Silvery Moon" goes the song. But the color and appearance of the Moon depends upon the particular set…

7 years ago

How to See Airglow, the Green Sheen of Night

Emerald green, fainter than the zodiacal light and visible on dark nights everywhere on Earth, airglow pervades the night sky…

7 years ago

The Curious Channel 37 — Must-see TV For Radio Astronomy

Thanks to Channel 37, radio astronomers keep tabs on everything from the Sun to pulsars to the lonely spaces between…

9 years ago

Absorption Spectroscopy

[/caption] In terms of physics, absorption is defined as the way that energy from photons is taken up by matter,…

11 years ago

Light Spectrum

Light spectrum can mean the visible spectrum, the range of wavelengths of electromagnetic radiation which our eyes are sensitive to…

12 years ago

Visible Light

[/caption] Of all the wavelengths in the electromagnetic spectrum, those that lie between 400 nm to 700 nm are the…

12 years ago