Why Did Einstein Introduce His Cosmological Constant into the Original

question 13

Multiple Choice

Why did Einstein introduce his cosmological constant into the original field equations for general relativity?

• A) The constant was necessary to make the solutions describe an expanding universe.
• B) Experimental evidence at this time (before Hubble) suggested a static universe, and this constant was required to produce static solutions.
• C) The constant represented the acceleration of gravity near Earth's surface, and it was necessary to make the nonrelativistic limit of the solutions compatible with Newton's results.
• D) The constant represented the speed of light, and its inclusion was necessary to produce solutions that were compatible with the postulates of special relativity.

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Definitions:

Standard Normal

A normal distribution with a mean of zero and a standard deviation of one, used as the basis for z-scores in statistics.

Standard Deviation

A metric that calculates how much a dataset's values spread out or diverge from their average.

Normally Distributed

Refers to a type of continuous probability distribution where data points are symmetrically distributed around the mean, forming a bell-shaped curve.

Variance

A measure of the dispersion or spread of a set of data points in a data set, representing the average squared deviation from the mean.