Lots More Information

Related HowStuffWorks Articles

• How Special Relativity Works
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More Great Links

• Bending Spacetime in the Basement (how to repeat the Cavendish Experiment to calculate the gravitational constant G)
• Science Daily: Discovery Of 'Cosmic Chords' May Support Prediction of Einstein's Theory -- April 22, 1998
• Science Digest: 'What Goes Up'... Is Basis for a Breakthrough -- April 1978

Sources

• "Einstein's geometric gravity." Einstein Online.
  http://www.aei.mpg.de/einsteinOnline/en/elementary/generalRT/GeomGravity/index.html
• "Gravity." Princeton WordNet.
  http://wordnetweb.princeton.edu/perl/webwn?o2=&o0=1&o7=&o5=&o1=1&o6=&o4=&o3=&s=gravitational+attraction
• Kurtus, Ron. "Gravitation and the Force of Gravity." Succeed in Physical Science: School for Champions.
  http://www.school-for-champions.com/science/gravity.htm
• "Is gravity a particle or a wave?" Scientific American. October 21, 1999.
  http://www.scientificamerican.com/article.cfm?id=is-gravity-a-particle-or