Site MapHelpFeedbackLight and Telescopes
Light and Telescopes


<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/007299181x/59240/chapter06.jpg','popWin', 'width=434,height=389,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (19.0K)</a>

I had a dream, which was
not all a dream.
The bright sun was
extinguished, and the stars
Did wander darkling in the
eternal space,
Rayless, and pathless, and
the icy earth
Swung blind and blackening in
the moonless air.

Lord Byron
Darkness


Questions to Explore:
  • How can we describe the different kinds of electromagnetic radiation?
  • How do telescopes work?
  • How do astronomers measure the light from celestial objects?
  • Where are some of the best places to build an observatory?
  • Why is it so important for astronomers to have observatories in space?
  • What is radio astronomy? How do radio telescopes work?





To learn more about the book this website supports, please visit its Information Center.
(c)2006 McGraw-Hill Higher Education
Any use is subject to the Terms of Use and Privacy Policy.
McGraw-Hill Higher Education is one of the many fine businesses of The McGraw-Hill Companies.


AstronomyOnline Learning Center

Home > Chapter 6