For a long time, power meters were built using a combination of a base unit and an external power sensor connected via a cable. The RF signal was converted to a voltage signal in the power sensor, ...

Inlet unstart is a particularly critical issue associated with scramjets. That is the upstream displacement or disgorging of the original inlet shock system. Large flow spillage can be caused by the ...

(HealthDay) -- Eight treatments with a home-use diode laser provide effective and safe permanent hair reduction one year after the last treatment, according to research published in the September ...