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Ultrasonic toothbrush (Megasonex) An ultrasonic toothbrush is an electric toothbrush designed for daily home use that operates by generating ultrasound in order to aid in removing plaque and rendering plaque bacteria harmless. It typically operates on a frequency of 1.6 MHz, which translates to 96,000,000 pulses or 192,000,000 movements per minute.
The brush head vibrates at hundreds of times per second, with the latest models at 31,000 strokes per minute (517 Hz) or 62,000 movements per minute [1] (1033 Hz). Rather than connecting to its charger with conductors, it uses inductive charging —the charger includes the primary winding of the voltage-reducing transformer and the handle of ...
An electric toothbrush, motorized toothbrush, or battery-powered toothbrush is a toothbrush that makes rapid automatic bristle motions, either back-and-forth oscillation or rotation-oscillation (where the brush head alternates clockwise and counterclockwise rotation), in order to clean teeth.
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A random vibration profile will excite different frequencies along a spectrum at different times. [6] Significant calculation goes into making sure that all frequencies get excited to within an acceptable tolerance band. A random vibration test suite may range anywhere from 30 seconds up to several hours.
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Tooth Tunes is a discontinued line of children's toothbrushes released by the Tiger Electronics division of Hasbro in 2007. [1] Each brush played a two-minute song clip from a particular artist to encourage the user to brush their teeth for the dentist-recommended two minutes. A single toothbrush came with one song, and had a manufacturer's ...
With patrol duty and a probe looming, Epps filed paperwork Monday for a vested separation retirement, according to information obtained by The Post.