Abstract: Continuous monitoring of the speed of fans in terms of rotations per minute (RPM) can offer several benefits such as fault diagnostics, the prognostics, and the amount of offered propulsion.

Abstract: Multiple water quality sensors are required to construct a network for continuous and precise monitoring of water quality in natural environments. Therefore, low-cost sensors are necessary ...

Everyone knows the number for the speed of light — but almost nobody knows the uncomfortable truth behind it. Measuring light in one direction requires perfectly synchronized clocks, and that’s the ...