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Einstein Reference Libraries

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Cosmological Constant
2004-10-19 04:45:41

Cosmological Constant -- The cosmological constant (usually denoted by the Greek capital letter lambda: Λ) is a value occurring in Einstein's theory of general relativity. The units of Λ are 1/second2; its value is unknown but believed to be positive based on recent observations. The constant is proportional to the energy density of the vacuum ρ, where π is Pi, G is the...

Word of the Day
dingle
  • A small wooded valley; a dell.
  • The protecting weather-shed built around the entrance to a house.
  • The roofed-over space between the kitchen and the sleeping-quarters in a logging-camp, commonly used as a storeroom.
The word 'dingle' comes from Middle English dell, hollow.
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