Ultrasound
Query URLs
https://term.museum-digital.de/md-de/tag/3600
- Note
- "Ultrasound is sound waves with frequencies higher than the upper audible limit of human hearing. Ultrasound is not different from "normal" (audible) sound in its physical properties, except that humans cannot hear it. This limit varies from person to person and is approximately 20 kilohertz (20,000 hertz) in healthy young adults. Ultrasound devices operate with frequencies from 20 kHz up to several gigahertz.
Ultrasound is used in many different fields. Ultrasonic devices are used to detect objects and measure distances. Ultrasound imaging or sonography is often used in medicine. In the nondestructive testing of products and structures, ultrasound is used to detect invisible flaws. Industrially, ultrasound is used for cleaning, mixing, and accelerating chemical processes. Animals such as bats and porpoises use ultrasound for locating prey and obstacles." - (en.wikipedia.org 11.12.2019)
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Schall-Waschmaschine
Die Ultrakust...
Object information
Image: Historisches Museum Bielefeld - CC BY-NC-SA -
Schallwaschgerät "Pulsette"
Das elektrische...
Object information
Image: Heimatverein Teltow - CC BY-NC-SA -
Schallwaschgerät "Vibrette"
Schallwaschgerät „Vibrette"...
Object information
Image: Heimatverein Teltow - CC BY-NC-SA -
Schallwaschgerät "Waschbär"
Das um 1950 von der...
Object information
Image: Heimatverein Teltow - CC BY-NC-SA -
Realtime-Ultraschall-Diagnosesystem Brüel & KjærTyp 1849
Ultraschall-Untersuchungseinhe...
Object information
Image: Krankenhausmuseum Bielefeld e.V. - CC BY-NC-SA
References
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