- #1
Grizzlycomet
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http://www.cnn.com/2004/TECH/space/04/02/einstein.satellite.ap/index.html
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In summary, NASA and Stanford University officials have announced that a satellite designed to test two predictions made by Albert Einstein about the universe will finally be launched after 45 years since it was first proposed. The predictions include a geodetic effect resulting in 6.6 arcseconds of anomalous precession per year and a Lense-Thirring precessional prediction of 0.042 arcseconds per year.
- #2
Monique
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I was just about the post the same :)
So how large would they predict the deviation to be after two years?
So how large would they predict the deviation to be after two years?
- #3
Creator
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Monique said:
Monique; there are two GR effects predicted upon the gyroscopes.
One is a geodetic effect (due to the 'curvature' of space-time) which amounts to an anomalous precession of about 6.6arcseconds per year.
The other is the Lense-Thirring (frame dragging) precessional prediction which comes to only 0.042 arcseconds/yr.
Creator
1. What is the purpose of using a satellite to test Einstein's predictions?
The purpose of using a satellite to test Einstein's predictions is to provide a controlled and precise environment for testing Einstein's theories of general and special relativity. This allows for more accurate measurements and confirmation of these theories.
2. How does a satellite test Einstein's predictions?
A satellite can test Einstein's predictions by using highly precise instruments to measure various phenomena, such as gravitational time dilation, gravitational lensing, and the curvature of space-time. These measurements can then be compared to the predictions made by Einstein's theories.
3. What are some specific examples of Einstein's predictions that have been tested using satellites?
Some examples of Einstein's predictions that have been tested using satellites include the Pound-Rebka experiment, which confirmed the gravitational redshift predicted by general relativity, and the Gravity Probe B mission, which measured the geodetic effect and frame-dragging effect predicted by general relativity.
4. What are the potential implications of testing Einstein's predictions with satellites?
Testing Einstein's predictions with satellites can help to further our understanding of the fundamental forces of the universe and the nature of space and time. It can also lead to advancements in technology, such as improved navigation systems and more accurate clocks.
5. Are there any challenges or limitations to using satellites for testing Einstein's predictions?
There are some challenges and limitations to using satellites for testing Einstein's predictions. These include the high cost and complex engineering required to launch and maintain satellites, as well as potential sources of error such as external influences on the satellite's measurements.
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