To measure gravity, what you really want to do is track a particle in space, namely a
satellite, and track it very accurately. That’s what Grace is going to do. We’re going to track one satellite with another satellite with extremely high precision. The two Grace satellites are going to be about 220 kilometers (137 miles) apart. We’re going to be able to measure the distance between them to within 1 micron. That’s like measuring the distance between here and San Diego to within the thickness of a red blood cell.
Hi, I am a high school student it British Colombia in Canada, and I would like to do a science fair project on gravity. Can you please give me some suggections suitable to high school students?
Bill,
Take a look at the experiments at this page:
http://www.fourmilab.ch/gravitation/foobar/
The page is entitled “Bending Spacetime in the Basement.” Doesn’t that sound like it might win a prize at your science fair? :)
-jh
