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barograph |
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barograph, instrument used to make a continuous recording of atmospheric pressure. The pressure-sensitive element, a partially evacuated metal cylinder, is linked to a pen arm in such a way that the vertical displacement of the pen is proportional to the changes in the atmospheric pressure. The pen traces a record of pressure versus time on a chart, which is mounted on a drum rotated by a clockwork. Each chart usually provides one week's record. See barometer barometer (bərŏm`ətər), instrument for measuring atmospheric pressure. ..... Click the link for more information. . barograph Meteorol a self-recording aneroid barometer barograph [′bar·ə‚graf] (engineering) 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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| A videotape recording of the subject's interface pressure (between the buttock and a solid seat), detected on a barograph chair, illustrated the changes in pressure distribution (viewed on a color monitor as overlapping concentric rings) when using various sizes of lumbar supports. On board the flight was a barograph which established that the airship did not land, in accordance with the Federation Aeronautique International (FAI) which establishes the rules for world records. The barograph used to measure sitting pressure has been described previously. |
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