August 12, 2026 • American Red Cross declares blood crisis The American Red Cross has declared a national blood crisis, only the second time in its history it has taken that step. The first was in ...

Optical sensors are a broad class of device for detecting light intensity. This can be just a simple component for notifying when ambient light levels rise above or fall below a prescribed level, or a ...

TV picture quality has come a long way in the last few years. Even cheap TVs now look about as good as something that would’ve cost you $1,000 or more just a couple of years ago. But TV audio hasn’t ...

Sensors are devices that detect and quantify physical aspects of the world around us. The measurement can either be read directly or converted to a signal for processing by electrical, hydraulic or ...