Ultrasound Tech Site
February 25th, 2011 | 
Author: Vibration nature of sound, is, composed of longitudinal mechanical waves, but a higher maximum audible frequency, which is 20 000 Hz for the human ear. The primary method for obtaining ultrasonic vibration consists of a quartz crystal, produced by a phenomenon opposite to the piezoelectric effect, applying an electric field alternating them. It can produce infrasound 6 108 Hz frequency, which, in the air, corresponding to wavelengths of about 5 10-5 cm.
The ultrasounds are used in determining the speed of sound in a medium in the detection of discontinuities in a solid and measure distances and thicknesses, especially in the probes to measure the depth of the sea and to detect want to fish, submarines, etc., as the bulk of industrial metal parts and the detection of bubble blowing, internal cracks and other defects in the standardization of solutions and emulsions in dissipation of fog and aerosol coagulation in the activation of chemical reactions in welding metal parts, etc. Ultrasound technicians are needed by many hospitals at present. The ultrasound-technician.net is recommendation for ultrasound tech site that you have to visit if you want to be ultrasound technician. This site is providing all the information that you need to be a professional ultrasound technician.
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