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level: see spirit level spirit level, tool for determining whether a surface is horizontal. It consists essentially of a slightly bent transparent tube that is held in a frame. The tube contains some alcohol, ether, or similar fluid but is not entirely filled, so that it also contains a ..... Click the link for more information. . levelDevice for establishing a horizontal plane. It consists of a small, sealed glass tube containing liquid and an air bubble; the tube is fixed horizontally in a block or frame with a smooth lower surface. When the bubble is in the middle of the glass tube, the device is on a level surface; adjustment to the horizontal is indicated by movement of the bubble. The glass tube is slightly bowed, and the level's sensitivity is proportional to the radius of curvature. level 1. Engineering a device, such as a spirit level, for determining whether a surface is horizontal 2. Geography any of the successive layers of material that have been deposited with the passage of time to build up and raise the height of the land surface 3. Physics the ratio of the magnitude of a physical quantity to an arbitrary magnitude level [′levĀ·əl] (civil engineering) A surveying instrument with a telescope and bubble tube used to take level sights over various distances, commonly 100 feet (30 meters). To make the earth surface horizontal. (communications) A specified position on an amplitude scale (for example, magnitude) applied to a signal waveform, such as reference white level and reference black level in a standard television signal. (computer science) The status of a data item in COBOL language indicating whether this item includes additional items. (design engineering) A device consisting of a bubble tube that is used to find a horizontal line or plane. Also known as spirit level. (electricity) A single bank of contacts, as on a stepping relay. (electronics) The difference between a quantity and an arbitrarily specified reference quantity, usually expressed as the logarithm of the ratio of the quantities. A charge value that can be stored in a given storage element of a charge storage tube and distinguished in the output from other charge values. (mining engineering) Mine workings that are at the same elevation. A gutter for the water to run in. (statistics) In factorial experiments, the quantitative or qualitative intensity at which a particular value of a factor is held fixed during an experiment. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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