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Definition of "Low Frequency" |
The band of frequencies from 30 kHz to 300 kHz. / Low frequency refers to radio frequencies in the range of 30 kHz–300 kHz. Also known as the kilometre band or kilometre wave as the wavelengths range from one to ten kilometres, the low signal attenuation in this band allows long distance communication. / A scanning tunneling microscope is a device that obtains images of the atoms on the surfaces of materials. The STM is not an optical microscope; instead, it works by detecting electrical forces with a probe that tapers down to a point only a single atom across. |
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