Einstein's equations. Is it the exact embodiment of the principles of general relativity?
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Answers
Answer:
- According to the principal of the general relativity theory, the gravitu field equation should contain the field energy as a source of the field itself.
Including the field energy- momentum tensor into the Einstein's equation brings extra unknown quantities to the equation. Such equation is not suitable for a metric finding; however it allows---- based on the known metric---- calculating the whole energy - momentum tensor of both matter and gravitational field. As the gravity field metric, the metric of continuous field can be used, parameters of which are found from the generally covariant one - parametric equation. Here, the solutions are given of the equation for the spherically symmetric stationary problem. One of the solutions concides practically with that by Schwarzschild for weak fields , whild the other one describes an expulsive field.
Explanation:
2. Astronomer
An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth.
Answer:
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Explanation:
Change affirmative sentences
We are sitting in the train.
He is playing cricket.
They are going to market.
She is washing clothes.
You are planting trees.