Tag: doppler

Heracidictirade in opposition to a hapless ultrasoundtechnician is one of the funniestmoments of the movie. Thecoupleannounced thenews on a homemadeinternetvideo which includesfootage of her ultrasoundscan. Sound whose frequency is above the higher restrict of the vary of human hearing (roughly 20 kilohertz). The American Heritage® Stedman’s Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Your query may be answered on-line to help educate the public about women’s well being.

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Listed beneath are some of the common examinations, with the preparation … Read More

Ultrasonic waves propagating in gases—notably in air— bear appreciable attenuation (seeABSORPTION OF SOUND). Liquids and solids, particularly single crystals, are usually good ultrasonic conductors; the attenuation in such substances is far weaker. For example, the attenuation of ultrasonic waves in water, other situations being equal, is lower than the attenuation in air by a factor of 1,000. Therefore, medium- and high-frequency ultrasonic waves are used nearly completely in liquids and solids, and solely low-frequency ultrasonic waves are used in air and different gases. In obstetrics it’s used to study the age, intercourse, and degree of improvement of the fetus and to determine the presence of delivery defects or different potential issues.

How Does It Capture An Image?

For example, birds react with ache to ultrasonic frequencies above 25 kHz. This reality is made use of, for instance, to frighten gulls away from bodies of water that are sources of consuming … Read More