Detecting gravity's effect on light

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In summary, the author of the referenced website claims that the experiment conducted by Eddington was not reliable and that his scope was not large enough to accurately measure the amount of bending of starlight.
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ideasrule
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During a solar eclipse, is it possible to detect the bending of starlight by the Sun using amateur astronomy equipment? If so, is it possible to show that the amount of bending agrees with general relativity but not Newtonian physics?

My idea is to pick a star that's close to the Sun during totality, predict its altitude and azimuth without accounting for gravitational lensing, and find a star that passes by the same altitude and azimuth during the night before the eclipse. Center the star, wait until the eclipse, take a photo, and see how far the star in it is from the exact center. How accurate is this method with, say, an eight-inch telescope?
 
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A guy named Albert beat you to it.

Eddington used a 4" 'scope with adequate results; your 8" should be more than good enough.

http://www.Newtonphysics.on.ca/EINSTEIN/Appendix2.html
 
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  • #3
negitron said:
Eddington used a 4" 'scope with adequate results; your 8" should be more than good enough.

http://www.Newtonphysics.on.ca/EINSTEIN/Appendix2.html

You might want to be careful who you quote here , Negitron.

You probably didn't intend to do it, but...
The site you referenced is written by a highly opinionated fellow (Paul Marmet) who is known to challenge just about EVERYTHING in standard physics...
and here he is giving a discourse as to why Eddington's test of GR was falsified and unreliable, and the size of his scope was completely insufficient to get the required resolution.

There may be some truth to some of the details of sytematic error and bias, but Marmet is known for overexagerating the facts, especially those that promote his pre-conceived (and highly anti-Relativistic) philosophy. I find he is rarely objective with the facts...and many times invents false reasons to try to dismiss relativistic behavior.

...
 
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  • #4
It was mainly intended as a reference for the size of the telescope used, rather than an analysis of the experiment; a point which I failed to make clear.
 

1. How does gravity affect light?

Gravity affects light by causing it to bend as it passes through regions of varying gravitational pull. This bending of light, known as gravitational lensing, is a result of Einstein's theory of general relativity.

2. Can we detect gravity's effect on light?

Yes, scientists have been able to detect and measure the bending of light due to gravity through various observations and experiments. One famous example is the observation of light from distant stars being bent by the Sun's gravitational pull during a solar eclipse.

3. Why is detecting gravity's effect on light important?

Studying the bending of light due to gravity can help us understand the nature of gravity and how it affects the behavior of light. It also allows us to observe and study distant objects that would otherwise be too faint or obscured to see, such as distant galaxies and black holes.

4. Can we use gravity's effect on light to study other phenomena?

Yes, gravitational lensing can also be used to study other phenomena, such as the distribution of dark matter in the universe and the expansion rate of the universe. It can also help us discover and study new objects, such as exoplanets and gravitational waves.

5. Are there any current projects or experiments focused on detecting gravity's effect on light?

Yes, there are several ongoing projects and experiments, such as the Hubble Space Telescope, the Large Synoptic Survey Telescope, and the Laser Interferometer Gravitational-Wave Observatory (LIGO), that are dedicated to studying the effects of gravity on light and using it to further our understanding of the universe.

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