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Deflection angle of a ray grazing the sun

  1. Mar 14, 2008 #1
    I saw in a website that Einstein found the deflection angle of a ray grazing the sun through this relation
    alpha=4GM/c2r=1.74 arc sec
    but when i used this relation by giving values i didnt get this value 1.74...wats wrong..can anyone solve this ...
     
  2. jcsd
  3. Mar 14, 2008 #2
    I got the answer 1.74...i multipled the answer by 206264 to convert it into arcsecs..
    can anyone tell me how to derive this alpha...alpha=4GM/c2r
     
  4. Mar 14, 2008 #3
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