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Contact number. In chemistry, a contact number ( CN) is a simple solvent exposure measure that measures residue burial in proteins. [1] The definition of CN varies between authors, but is generally defined as the number of either C or C atoms within a sphere around the C or C atom of the residue. The radius of the sphere is typically chosen to ...
Equivalently, the order of the Planck constant reflects the fact that everyday objects and systems are made of a large number of microscopic particles. For example, in green light (with a wavelength of 555 nanometres or a frequency of 540 THz) each photon has an energy E = hf = 3.58 × 10 −19 J. That is a very small amount of energy in terms ...
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Capillary number. In fluid dynamics, the capillary number ( Ca) is a dimensionless quantity representing the relative effect of viscous drag forces versus surface tension forces acting across an interface between a liquid and a gas, or between two immiscible liquids. Alongside the Bond number, commonly denoted , this term is useful to describe ...
He joined MIT Radiation Laboratory in 1940, where he contributed to a number of World War II radar projects and worked as a test pilot, before joining J. Robert Oppenheimer on the Manhattan Project in 1943. He moved back to Berkeley as a full professor after the war, going on to use his knowledge in work on improving particle accelerators.
Contact is a 1997 American science fiction drama film directed by Robert Zemeckis, based on the 1985 novel by Carl Sagan. Sagan and his wife Ann Druyan wrote the story outline for the film. It stars Jodie Foster as Dr. Eleanor "Ellie" Arroway, a SETI scientist who finds evidence of extraterrestrial life and is chosen to make first contact .
Telephone numbers in Norway. Telephone numbers in Norway have the country code "+47" and up to the first 2 digits of the phone number will indicate its geographic area. Emergency services are 3 digits long and start with the number "1". Mobile numbers vary in length, either 8 digits or 12 digits.
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