Relativity & Expansion of Universe: Einstein's Cosmological Constant

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SUMMARY

The discussion centers on the relationship between Einstein's theory of general relativity and the expansion of the universe, highlighting that general relativity predicts a universe that must either expand or contract. The cosmological constant, introduced by Einstein, was intended to allow for a static universe by counteracting gravitational forces. However, this balancing act proved to be complex and ultimately led to the understanding that the universe is indeed expanding.

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  • General relativity concepts
  • Understanding of the cosmological constant
  • Basic knowledge of universe expansion theories
  • Familiarity with gravitational forces
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  • Research the implications of the cosmological constant in modern cosmology
  • Study the effects of general relativity on cosmic expansion
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Astronomers, physicists, and students of cosmology looking to deepen their understanding of the interplay between general relativity and the dynamics of the universe's expansion.

phys lover199
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hi every body

i have a question what is the relation bet relativity and the expansion of the universe




and how einstine formed his cosmological condtant
 
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phys lover199 said:
hi every body

i have a question what is the relation bet relativity and the expansion of the universe

The relationship is that general relativity predicts a universe has to be either expanding or contracting. Holding perfectly still is like balancing a pencil on it's point - a slight change and it tips.




and how einstine formed his cosmological condtant

The cosmological constant was added by Einstein in hope of a static Universe solution - the constant would keep the Universe from expanding or contracting, but the balancing act is incredibly difficult.
 

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