Einstein Reference Libraries
Cosmological Constant -- The cosmological constant (usually denoted by the Greek capital letter lambda: Î›) is a value occurring in Einstein's theory of general relativity. The units of Î› 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 Ï, where Ï€ is Pi, G is the...
- 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.