scratch-method
121Third rail — For other uses, see Third rail (disambiguation). Third rail at the West Falls Church Metro station near Washington, D.C., electrified at 750 volts. The third rail is at the top of the image, with a white canopy above it. The two lower rails… …
122Software prototyping — Software prototyping, a possible activity during software development, is the creation of prototypes, i.e., incomplete versions of the software program being developed.A prototype typically simulates only a few aspects of the features of the… …
123metaphysics — /met euh fiz iks/, n. (used with a sing. v.) 1. the branch of philosophy that treats of first principles, includes ontology and cosmology, and is intimately connected with epistemology. 2. philosophy, esp. in its more abstruse branches. 3. the… …
124Etching — For other uses of etch or etching, see Etching (disambiguation), for the history of the method, see old master prints. The Soldier and his Wife. Etching by Daniel Hopfer, who is believed to have been the first to apply the technique to… …
125Comparison of Java and C++ — Programming language comparisons General comparison Basic syntax Basic instructions Arrays Associative arrays String operations …
126List of computing and IT abbreviations — This is a list of computing and IT acronyms and abbreviations. Contents: 0–9 A B C D E F G H I J K L M N O P Q R S T U V W X Y …
127Prepaid mobile phone — A prepaid mobile phone (pay as you go or prepaid wireless) is a mobile phone for which service is purchased in advance of use. By purchasing credit to use on a mobile phone network, a user can access a mobile phone network without ongoing billing …
128Perron–Frobenius theorem — In linear algebra, the Perron–Frobenius theorem, proved by Oskar Perron (1907) and Georg Frobenius (1912), asserts that a real square matrix with positive entries has a unique largest real eigenvalue and that the corresponding… …
