lag

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lag

[lag]
(civil engineering)
A flat piece of material, usually wood, used to wedge timber or steel supports against the ground and to make secure the space between supports.
(electronics)
A persistence of the electric charge image in a camera tube for a small number of frames.
(physics)
The difference in time between two events or values considered together.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

LAG

On drawings, abbr. for lagging.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

lag

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i. A delay or time interval in an instrument like the vertical speed indicator (VSI) or an altimeter between the actual event and its display. An altimeter lags in steep descent and very steep climbs, while some lag is inherent on all VSIs.
ii. The angular crankshaft movement between a reference position such as TDC (top dead center), BDC (bottom dead center), and the opening or closure of a valve. Also called valve lag.
iii. The angular movement between the helicopter hub and the temporary slower blade.
iv. The delay in the human reaction to an event.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved

lag

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