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6 votes
4 answers
134 views

How do we interpret measurements of Mercury's position?

When scientists measured the position of Mercury in the 18th century, they interpreted the results assuming a Euclidean background, because they did not know general relativity. So they measured $r$ ...
Giovanni's user avatar
0 votes
1 answer
157 views

How to calculate coordinate acceleration in general relativity (without going to the Newtonian domain)?

The below quote is from Gravitation and Cosmology by Weinberg. I don't understand the calculations leading to equation $(9.1.2)$. Any help or alternative resources will be helpful. 1 The Post-...
Ben Stark's user avatar
0 votes
0 answers
89 views

Adding two tensors in different coordinate systems

I have difficulties understanding the following (Everything out of the book Gravity by Poisson and Clifford): We have a quantity $\mathfrak{g}^{\alpha \beta}$ called gothic inverse metric in prior ...
JoeGlas's user avatar
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