reference frame

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reference frame

or frame of reference

Coordinate system that allows description of time and position of points relative to a body. The axes, or lines, emanate from a position called the origin. As a point moves, its velocity can be described in terms of changes in displacement and direction. Reference frames are chosen arbitrarily. For example, if a person is sitting in a moving train, the description of the person's motion depends on the chosen frame of reference. If the frame of reference is the train, the person is considered to be not moving relative to the train; if the frame of reference is the Earth, the person is moving relative to the Earth.

reference frame [′ref·rəns ‚frām]

(physics)

frame of reference

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No references found			Byline: ANI Washington, November 17 (ANI): Astronomers will tie together the largest collection of the world's radio telescopes ever assembled to work as a single observing tool in a project aimed at improving the precision of the reference frame scientists use to measure positions in the sky. Record-breaking radio astronomy project to measure sky with extreme ... by Asian News International Designed for electrical engineers and students with knowledge of AC circuit theory, basic control theory and electrical machinery, this book explains modern transmission networks, bus reference frames, network fault and contingency calculations and power flow. Computer-aided power systems analysis, 2d ed. (CD-ROM included) by SciTech Book News Let us introduce a second order symmetric traceless tensor [xi] as internal variable with the following components in the reference frame where the velocity gradient is (25) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII]. Objective time derivatives in nonequilibrium ... by Van, Peter / Proceedings of the Estonian Academy of Sciences			Reexport REF REF-ARF refactor refactoring Refah Party REFAL refarming refectory refer reference reference acoustic pressure reference address reference angle reference block Reference Book reference burst reference counting reference craft reference design reference dimension reference dipole reference direction Reference Electrode Reference Ellipsoid reference frame reference frequency Reference Fuel Reference Grid reference level reference line reference listing Reference Literature reference locality reference lot reference mark reference material reference monitor reference noise reference plane Reference Point reference range reference record reference rounds reference section reference seismometer reference signal level reference sound level reference spheroid reference standard specification reference standards			reference dimension reference dipole reference direction reference diversion point Reference Document Reference Document Publication System Reference dose Reference dose Reference dose Reference dose Reference dose Reference Dose Values Reference Drawing Reference Earth Model Reference electrode Reference electrode Reference electrode reference electrodes reference electrodes Reference ellipsoid Reference Energy System Reference Engineering Data Automated Retrieval System Reference Entity Database Reference Entry Balance Reference Exposure Concentration Reference Exposure Level Reference Fast Trend Line Reference Field Effect Transistor Reference Flight System reference form reference frame Reference frame (physics) Reference frame (physics) Reference frame (physics) Reference frame (physics) Reference Frame Selection Reference frames Reference frames Reference frames Reference frames Reference Framework 5 Reference Framework for the Description of Quality Approaches Reference Free Part Encapsulation reference frequency Reference Frequency Timing Generator reference fuel reference grid reference grid Reference group Reference Group on Child Abuse Reference Group on Small Arms Reference Group on Welfare Reform Reference Hydrogen Electrode Reference Hydrometric Basin Network Reference Hypernetted Chain Reference Image Database to Evaluate Response Reference implementation Reference Information Base Reference Information for Software Quality Reference Information Model Reference Information Storage System

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