the atomic number or neutron number of an exceptionally stable nuclide.
(physics) any of the numbers 2, 8, 20, 28, 50, 82, and 126. Nuclides with these numbers of nucleons appear to have greater stability than other nuclides
(chem) a number of atoms that is particularly stable in certain types of compound that have clusters of the same type of atom
Any of the numbers, 2, 8, 20, 28, 50, 82, or 126, that represent the number of neutrons or protons in strongly bound and exceptionally stable atomic nuclei. The existence of such stable nuclei is explained by assuming a shell structure for nucleons, much like the shell structure of electron orbitals around the nucleus.
- Magic paper
An early interactive symbolic mathematics system. [Sammet 1969, p. 510]. (1995-01-25)
noun 1. a style of painting and literature in which fantastic or imaginary and often unsettling images or events are depicted in a sharply detailed, realistic manner. noun 1. a style of painting or writing that depicts images or scenes of surreal fantasy in a representational or realistic way
- Magic smoke
electronics, humour A substance trapped inside integrated circuit packages that enables them to function (also called “blue smoke”; this is similar to the archaic “phlogiston” hypothesis about combustion). Its existence is demonstrated by what happens when a chip burns up – the magic smoke gets let out, so it doesn’t work any more. See Electing […]
noun 1. a square containing integers arranged in an equal number of rows and columns so that the sum of the integers in any row, column, or diagonal is the same. noun 1. a square array of rows of integers arranged so that the sum of the integers is the same when taken vertically, horizontally, […]
- Magic switch story
Some years ago, I was snooping around in the cabinets that housed the MIT AI Lab’s PDP-10, and noticed a little switch glued to the frame of one cabinet. It was obviously a homebrew job, added by one of the lab’s hardware hackers (no-one knows who). You don’t touch an unknown switch on a computer […]