News tagged with sensors

Related topics: robot , solar cells , electronic devices , artificial intelligence , carbon nanotube

3-D heart sock could replace pacemaker

(Medical Xpress)—An international research team that includes a University of Alberta engineering professor has designed a 3-D silicone "heart sock" that could eventually replace the venerable pacemaker.

Mar 26, 2014
popularity 4.8 / 5 (4) | comments 0

New detector for rare cancer cells

(Medical Xpress) -- Researchers in the US have developed a new detector for measuring rare circulating tumor cells (CTCs) in samples of whole blood.

Jul 07, 2012
popularity 4.3 / 5 (3) | comments 0 | with audio podcast report

Your eyes are half a billion years old

Look after your eyes – they are at least half a billion years old, and a good deal older than your brain. The eyes are one of our most remarkable and precious organs, yet their origins have been shrouded ...

Jul 30, 2013
popularity 4.3 / 5 (18) | comments 5 | with audio podcast

Sensor

A sensor is a device that measures a physical quantity and converts it into a signal which can be read by an observer or by an instrument. For example, a mercury thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, all sensors need to be calibrated against known standards.

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