Sedimentary rocks form when particles are deposited compacted and eventually cemented together over time to form a rock. Sediments are formed by the deposition of layers […]
See explanation for a nice approximation using altitude H km and visible horizon ( nautical ) distance D km : Circumference = ##2pi(1/2D^2/H+H)## km Let B […]
The Chandrasekhar limit is the maximum mass of a stable white dwarf star. White dwarfs resist gravitational collapse primarily through electron degeneracy pressure. In the white […]
The main types of fossil types are: tracks & trails trace fossils molds & casts coprolites and bones. First the definition of fossil according to dictionary.com […]