Gravitation

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SANZEED
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Gravitation

Unread post by SANZEED » Sun Jun 03, 2012 4:07 pm

As far as I know,gravitational force reacts upon light. So is there any effect of this reaction if we are watching Venus or Neptune? :?: :roll:
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Phlembac Adib Hasan
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Re: Gravitation

Unread post by Phlembac Adib Hasan » Sun Jun 03, 2012 4:25 pm

SANZEED wrote:As far as I know,gravitational force reacts upon light. So is there any effect of this reaction if we are watching Venus or Neptune? :?: :roll:
অবশ্যই থাকবে। তবে আলোকে বাঁকানোর পক্ষে পৃথিবীর ভর খুবই অল্প।তাই বিচ্যুতি এত কম হবে যেটা সম্ভবত মাপাই অসম্ভব।
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Re: Gravitation

Unread post by SANZEED » Sun Jun 03, 2012 4:28 pm

I don't think it's not only the earth's mass which will fact. There are other planets as well.
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Re: Gravitation

Unread post by Phlembac Adib Hasan » Sun Jun 03, 2012 4:28 pm

তবে সূর্য কিন্তু কিছুটা বাঁকাতে পারে। এভাবে general theory of relativity-র একটা পরীক্ষামূলক প্রমাণ পাওয়া গিয়েছিল।(Source:একটুখানি বিজ্ঞান)
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Re: Gravitation

Unread post by Phlembac Adib Hasan » Sun Jun 03, 2012 4:32 pm

SANZEED wrote:I don't think it's not only the earth's mass which will fact. There are other planets as well.
Who said only earth's mass will effect?Other planets will also do so, at least theoretically.But as I said before, it's too small to measure.
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Re: Gravitation

Unread post by SANZEED » Mon Jun 04, 2012 6:59 am

Phlembac Adib Hasan wrote:তবে সূর্য কিন্তু কিছুটা বাঁকাতে পারে। এভাবে general theory of relativity-র একটা পরীক্ষামূলক প্রমাণ পাওয়া গিয়েছিল।(Source:একটুখানি বিজ্ঞান)
the measure was $1.72^{\circ}$,whereas theoretically it was $1.75^{\circ}$ .
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Re: Gravitation

Unread post by Phlembac Adib Hasan » Mon Jun 04, 2012 7:45 am

SANZEED wrote:
Phlembac Adib Hasan wrote:তবে সূর্য কিন্তু কিছুটা বাঁকাতে পারে। এভাবে general theory of relativity-র একটা পরীক্ষামূলক প্রমাণ পাওয়া গিয়েছিল।(Source:একটুখানি বিজ্ঞান)
the measure was $1.72^{\circ}$,whereas theoretically it was $1.75^{\circ}$ .
That's why it gave a practical proof of G.T.R.
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Re: Gravitation

Unread post by SANZEED » Mon Jun 04, 2012 2:33 pm

Yes. I know about two other practical proofs: the perihilion passage of Mercury,and most probably another is related to Dopler effect.
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Re: Gravitation

Unread post by Phlembac Adib Hasan » Mon Jun 04, 2012 9:00 pm

Yes, I know.But that proof was the first one.
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Re: Gravitation

Unread post by SANZEED » Mon Jun 04, 2012 11:24 pm

I know that. Two groups of scientists measured the angle, one from Brazil, I think.the leader was Arther Eddington. But I read Einstein in his book. He gave them in this serial: 1st Mercury, then gravitation, then Dopler.
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