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picture1_Ultrasound Therapy Ppt 78086 | 3 2017 12 13!02 41 17 Pm


picture2_Ultrasound Therapy Ppt 78086 | 3 2017 12 13!02 41 17 Pm picture3_Ultrasound Therapy Ppt 78086 | 3 2017 12 13!02 41 17 Pm

 108x       Filetype PPTX       File size 0.18 MB       Source: uomustansiriyah.edu.iq


File: Ultrasound Therapy Ppt 78086 | 3 2017 12 13!02 41 17 Pm
Infrasound refers to sound frequencies below the normal hearing range, or less than 20Hz. The audible sound range is usually defined as 20Hz to 20.000Hz (20kHz). However, relatively few ...

icon picture PPTX Filetype Power Point PPTX | Posted on 04 Sep 2022 | 2 years ago
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...Infrasound refers to sound frequencies below the normal hearing range or less than hz audible is usually defined as khz however relatively few people can hear over this entire frequency above called ultrasound used clinically in a number of specialties it often gives more information an x ray and hazardous for fetus general properties wave mechanical disturbance gas liquid solid that travels outward from source with some definite velocity we use loudspeaker vibrating back forth air at f demonstrate behavior vibrations cause local increases decreases pressure relative atmospheric these compressions rarefactions spread longitudinal which changes occur same direction relationship between vibration wavelength v energy carried by potential kinetic intensity i passing through m sec watts per square meter plane given z where density medium angular equals maximum displacement amplitude atoms molecules equilibrium position acoustic impedance also be expressed p o po change ear tolerate approxim...
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