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Electromagnetic waves

299 792 458 m/sec

Electric current (electric signal in copper)

Magnetism

Sound

340.29 m/sec

waves in Liquids/fluids

Freq

Heinrich Hertz

wavelength = speed of the wave / freq

Wavelength

Ultra sounds

Acoustic

Infra sounds

Ultra sound

2 MHz

20

60KHz

200 KHz

79KHz

20KHz

70 KHz

Frequency

1KHz-200KHz

40Hz-60KHz

1KHz-70KHz

55Hz-79KHz

http://www.lsu.edu/deafness/HearingRange.html

Superficial structures (muscles, tendons, testes, breast, thyroid and parathyroid glands, and the neonatal brain)

7-18 MHz

1-6 MHz

Deeper structures (liver, kidney)

Ultrasonic welding

SONAR

Ultrasonic cleaner

"The Incredible Hulk" movie clip

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