Question

What is STM ?? ???? ​

Answer 1

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• The STM-1 is the SDH ITU-T fiber optic network transmission standard. It has a bit rate of 155.52 Mbit/s. Higher levels go up by a factor of 4 at a time: the other currently supported levels are STM-4, STM-16, STM-64 and STM-256. Above STM-256 wavelength-division multiplexing is commonly used in submarine cabling.

Answer 2

Answer:

A Scanning Tunneling Microscope (STM) is a device that obtains images of the atoms on the surfaces of materials

Explanation:

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