The rate that electromagnetic energy is absorbed into the body. The specific absorption rate (SAR) is measured in watts per kilogram (W/kg) of human tissue. In the U.S., the maximum allowed SAR for a ...

THE European Union: tougher and less absorbent than ever! It sounds like communist-era toilet paper. But that is roughly the slogan that the EU is now adopting. Its latest intellectual fad is the ...

A semiconductor diode that modulates light from a laser that is separate from it, but may be fabricated on the same wafer. Turning the current on causes absorption of the light. See fiber optics ...