Time-domain reflectometry — or TDR is a measurement technique used to determine the characteristics of electrical lines by observing reflected waveforms. Time domain transmissometry (TDT) is an analogous technique that measures the transmitted (rather than reflected)… … Wikipedia
Time signature — (Music) A sign at the beginning of a composition or movement, placed after the key signature, to indicate its time or meter. Also called {rhythmical signature}. It is in the form of a fraction, of which the denominator indicates the kind of note… … The Collaborative International Dictionary of English
Fraction — In common usage a fraction is any part of a unit.Fraction may also mean: *Fraction (mathematics), a quotient of numbers, e.g. ¾ ; or, more generally, an element of a quotient field *Fraction (chemistry), a quantity of a substance collected by the … Wikipedia
Time to digital converter — In electronic instrumentation and signal processing, a time to digital converter (abbreviated TDC) is a device for converting a signal of sporadic pulses into a digital representation of their time indices. In other words, a TDC outputs the time… … Wikipedia
Time — This article is about the measurement. For the magazine, see Time (magazine). For other uses, see Time (disambiguation). The flow of sand in an hourglass can be used to keep track of elapsed time. It also concretely represents the present as… … Wikipedia
fraction — /frak sheuhn/, n. 1. Math. a. a number usually expressed in the form a/b. b. a ratio of algebraic quantities similarly expressed. 2. Chem. (in a volatile mixture) a component whose range of boiling point temperatures allows it to be separated… … Universalium
Time standard — A time standard is any officially recognized specification for measuring time: either the rate at which time passes; or points in time; or both. For example, the standard for civil time specifies both time intervals and time of day. A time scale… … Wikipedia
time — The nature of time has been one of the major problems of philosophy since antiquity. Is time well thought of as flowing? If so, does it flow from future to past with us stuck like boats in the middle of the river, or does it flow from past to… … Philosophy dictionary
time — 1. That relation of events which is expressed by the terms past, present, and future, and measured by units such as minutes, hours, days, months, or years. 2. A certain period during which something definite or determined is done. SYN: tempus (2) … Medical dictionary
Time zone — Timezone and TimeZone redirect here. For other uses, see Time zone (disambiguation). Local time redirects here. For the mathematical concept, see Local time (mathematics). This article is about time zones in general. For a list of time zones by… … Wikipedia
Time travel — This article details time travel itself. For other uses, see Time Traveler. Time travel is the concept of moving between different moments in time in a manner analogous to moving between different points in space, either sending objects (or in… … Wikipedia