a neutral meson with a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 X 10 -12 seconds.
An electrically neutral meson having a mass 10,507 times that of the electron and a mean lifetime of approximately 1.6 × 10-12 seconds. See Table at subatomic particle.
noun a urine or blood sample used in doping tests in professional sports to confirm or invalidate the presence of banned substances in the first sample, the A-sample See also A-sample
noun (photog) a shutter setting in which the shutter remains open until the shutter control is released
b-toolkit tool, programming, product A set of software tools designed to support a rigorous or formal development of software systems using the B-Method. The Toolkit also provides a development environment automating the management of all associated files, ensuring that the entire development, including code and documentation, is always in a consistent state. The Toolkit includes: […]
b-tree algorithm A multi-way balanced tree. The “B” in B-tree has never been officially defined. It could stand for “balanced” or “Bayer”, after one of the original designers of the algorithms and structure. A B-tree is _not_ (necessarily?) a “binary tree”. A B+-tree (as used by IBM’s VSAM) is a B-tree where the leaves are […]