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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 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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2 and 3 represent the Tradesman, as you would see him if your eye were close to the level, or all but on the level of the table; and if your eye were quite on the level of the table(and that is how we see him in Flatland) you would see nothing but a straight line. The morning of Powell's departure was, like nearly all Arizona mornings, clear and beautiful; I could see him and his little pack animals picking their way down the mountainside toward the valley, and all during the morning I would catch occasional glimpses of them as they topped a hog back or came out upon a level plateau. This is a great lake of salt water, laving the feet of the mountains, but extending far to the west-southwest, into one of those vast and elevated plateaus of land, which range high above the level of the Pacific. |
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