Today's Highlights November 08, 2008
What do infrared light and visible light and X-rays have in common?
Infrared (IR) light, visible light and X-rays are all electromagnetic radiation, and the only difference is in the frequency (or wavelength) of the energy. They are listed here in the question in order of lower to higher frequency, and that means longer to shorter wavelength.
Do you have the answers?
How will the death of Barack Obama's grandmother affect the election? | |
How have the Beduins adapted to living in their environment? |