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2. Electromagnetically induced acoustic noise - Wikipedia

   en.wikipedia.org/wiki/Electromagnetically...

   These phenomena can potentially generate vibrations of the ferromagnetic, conductive parts, coils and permanent magnets of electrical, magnetic and electromechanical device, resulting in an audible sound if the frequency of vibrations lies between 20 Hz and 20 kHz, and if the sound level is high enough to be heard (e.g. large surface of ...

3. Orders of magnitude (frequency) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude...

   10 0: 1 hertz (Hz) 1 to 1.66 Hz: Approximate frequency of an adult human's resting heart beat: 1 Hz: 60 bpm, common tempo in music 2 Hz: 120 bpm, common tempo in music ~7.83 Hz: Fundamental frequency of the Schumann resonances: 10 1: 10 hertz 10 Hz: Cyclic rate of a typical automobile engine at idle (equivalent to 600 rpm) 12 Hz

4. The Hum - Wikipedia

   en.wikipedia.org/wiki/The_Hum

   The first was a 36 Hz tone from a cooling tower at the local DaimlerChrysler casting plant and the second was a 10 Hz tone from an air compressor intake at the Haynes International plant. [21] After those devices were corrected, however, reports of the hum persisted. [22] Three hums have been linked to mechanical sources.

5. Crystal oscillator frequencies - Wikipedia

   en.wikipedia.org/wiki/Crystal_oscillator_frequencies

   Crystal oscillators can be manufactured for oscillation over a wide range of frequencies, from a few kilohertz up to several hundred megahertz.Many applications call for a crystal oscillator frequency conveniently related to some other desired frequency, so hundreds of standard crystal frequencies are made in large quantities and stocked by electronics distributors.

6. Video of Russian Blue Cat Learning How to Wear a Sari Is ...

   www.aol.com/video-russian-blue-cat-learning...

   Follow us on YouTube for more entertaining videos. Or, share your own adorable pet by submitting a video, and sign up for our newsletter for the latest pet updates and tips. Show comments.

7. Former Allianz employee spared prison time over $7 billion ...

   www.aol.com/news/former-allianz-employee-spared...

   A former Allianz fund manager was spared prison time on Friday over his role in a meltdown of private investment funds sparked by the COVID-19 pandemic that caused an estimated $7 billion of ...