Difference between revisions of "Ultrasound"
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== Authority == | == Authority == | ||
| − | * | + | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 |
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
* ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | * ''Van Nostrand's Scientific Encyclopedia'', Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976 | ||
| Line 17: | Line 17: | ||
* Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 | * Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000 | ||
| − | * | + | * Website address 1 Comment: www.hants.org.uk/museums/ofr/cmeth_t.html |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 07:56, 24 July 2013
Description
Acoustic frequencies that occur outside the range of the human ear, i.e. above 20,000 Hertz. Ultrasonic vibrations are made with small transducers that change electrical energy into resonating mechanical motion. A wide range of frequencies are used depending on the application. High intensity waves are used for cleaning, emulsification, friction welding, and sonar detection. Low-amplitude waves are used for security systems (burglar alarms, etc.) and material testing. Ultrasonic vibrations are used to nondestructively characterize physical properties of materials, such as porosity, water retention, and density.
Synonyms and Related Terms
ultrason (Fr.); Ultraschall (Deut.); ultrasonic; supersound; ultrasonography
Authority
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- Van Nostrand's Scientific Encyclopedia, Douglas M. Considine (ed.), Van Nostrand Reinhold, New York, 1976
- Art and Architecture Thesaurus Online, http://www.getty.edu/research/tools/vocabulary/aat/, J. Paul Getty Trust, Los Angeles, 2000
- Website address 1 Comment: www.hants.org.uk/museums/ofr/cmeth_t.html