a measure of the resolving power of a microscope, equal to the index of refraction of the medium in which the object is placed multiplied by the sine of the angle made with the axis by the most oblique ray entering the instrument, the resolving power increasing as the product increases.
noun, Computers. 1. control of a machine tool, or other device used in a manufacturing process, by a computer, other control circuitry, or recorded digital commands. noun 1. (engineering) a form of computer control applied to machine tools, by which an operation is directed from numerical data stored on tape or punched on cards
- Numerical identity
noun 1. (logic) the relation that holds between two relata when they are the selfsame entity, that is, when the terms designating them have the same reference Compare qualitative identity See also Leibnitz’s law
[noo-mer-i-kuh l, nyoo-] /nuˈmɛr ɪ kəl, nyu-/ adjective 1. of or relating to ; of the nature of a number. 2. indicating a number: numerical symbols. 3. bearing or designated by a number. 4. expressed by numbers instead of letters: numerical cryptography; numerical equations. 5. of or relating to one’s skill at working with numbers, […]
noun 1. classification of organisms by a comparison of large numbers of observable characteristics that are given equal value instead of being weighted according to possible evolutionary significance. numerical taxonomy (n-měr’ĭ-kəl) A method of taxonomy in which classification is made on the basis of a multivariate analysis of observable differences and similarities between taxonomic groups. […]