News tagged with sensors

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

Can humans sense the Earth's magnetism?

For migratory birds and sea turtles, the ability to sense the Earth's magnetic field is crucial to navigating the long-distance voyages these animals undertake during migration. Humans, however, are widely assumed not to ...

Jun 21, 2011
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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
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Reducing diabetics' hypoglycaemic events

Insulin pumps that can respond to blood glucose concentration can reduce the rate of severe hypoglycaemia (low blood glucose) in type 1 diabetics, according to the results of a recent trial.

Nov 25, 2013
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Sensor chip for monitoring tumors

A chip implant may soon be capable of monitoring tumors that are difficult to operate on or growing slowly. Medical engineers at Technische Universitaet Muenchen have developed an electronic sensor chip that can determine ...

Aug 26, 2011
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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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