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Ultrasound is defined by the American National Standards Institute as "sound at frequencies greater than 20 kHz". In air at atmospheric pressure, ultrasonic waves have wavelengths of 1.9 cm or less. Ultrasound can be generated at very high frequencies; ultrasound is used for sonochemistry at frequencies up to multiple hundreds of kilohertz.
Ohio (/ oʊ ˈ h aɪ. oʊ / ⓘ oh-HY-oh) [14] is a state in the Midwestern region of the United States.It borders Lake Erie to the north, Pennsylvania to the east, West Virginia to the southeast, Kentucky to the southwest, Indiana to the west, and Michigan to the northwest.
The ADR 2130, designed by Marty Wilcox was the first portable ultrasound unit commercially available in the United States, being released in 1975. This unit weighed about 25 lbs, had 3 linear probes to choose from and used an oscilloscope for a display instead of a TV monitor. [ 1 ]
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Medical ultrasound includes diagnostic techniques (mainly imaging techniques) using ultrasound, as well as therapeutic applications of ultrasound. In diagnosis, it is used to create an image of internal body structures such as tendons, muscles, joints, blood vessels, and internal organs, to measure some characteristics (e.g., distances and velocities) or to generate an informative audible sound.
Where is Wapakoneta, Ohio? Wapakoneta is in Auglaize County in western Ohio. It's about 90 miles northwest of Columbus. The suspected tornado was spotted at 7:43 p.m. Thursday traveling southeast ...
The Ohio State University football team won the national championship in 2002 and 2014, and consistently competes for the prize annually. The Cincinnati Reds won the World Series baseball championship in 1990 following their run as the Big Red Machine in the 1970s. The team won the National League Central Division champions in 2010 and 2012.
A rare total solar eclipse will cut a 115-mile-wide path April 8 across North America, but less than a week before it happens, new research suggests fewer Hoosiers could experience the totality ...