I Deflection of Starlight by Newtonian Gravity - Example Calculation

Henri Garcia
Messages
12
Reaction score
1
So, I have heard that the deflection of starlight using Newtonian gravity is only half of the deflection predicted by Einstein. NE1 know where I can find an example of the former calculation? thanks
 
Physics news on Phys.org
Henri Garcia said:
So, I have heard that the deflection of starlight using Newtonian gravity is only half of the deflection predicted by Einstein. NE1 know where I can find an example of the former calculation? thanks
Your Profile page says that you have a PhD. Google is your friend. Please post links to what you find with Google if you have trouble understanding what you are reading. Thank you.
 
  • Like
Likes Henri Garcia
Mea culpa. Thanks for the gentle reprimand. In hindsight I was bring a little lazy, But not completely,
I was so surprised in reading this (in Ripples in Spacetime) that I thought others might benefit from
a discussion. I have googled a derivation but have not yet worked through it all. I am sure I will have more
questions later. H
 
  • Like
Likes berkeman
In this video I can see a person walking around lines of curvature on a sphere with an arrow strapped to his waist. His task is to keep the arrow pointed in the same direction How does he do this ? Does he use a reference point like the stars? (that only move very slowly) If that is how he keeps the arrow pointing in the same direction, is that equivalent to saying that he orients the arrow wrt the 3d space that the sphere is embedded in? So ,although one refers to intrinsic curvature...
ASSUMPTIONS 1. Two identical clocks A and B in the same inertial frame are stationary relative to each other a fixed distance L apart. Time passes at the same rate for both. 2. Both clocks are able to send/receive light signals and to write/read the send/receive times into signals. 3. The speed of light is anisotropic. METHOD 1. At time t[A1] and time t[B1], clock A sends a light signal to clock B. The clock B time is unknown to A. 2. Clock B receives the signal from A at time t[B2] and...
So, to calculate a proper time of a worldline in SR using an inertial frame is quite easy. But I struggled a bit using a "rotating frame metric" and now I'm not sure whether I'll do it right. Couls someone point me in the right direction? "What have you tried?" Well, trying to help truly absolute layppl with some variation of a "Circular Twin Paradox" not using an inertial frame of reference for whatevere reason. I thought it would be a bit of a challenge so I made a derivation or...
Back
Top