Sensor
hideA 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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News tagged with sensors
Supermarket robot to help the elderly (w/ Video)
13 hours ago |
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(PhysOrg.com) -- Robovie-II, a retail-assistant robot designed to help elderly and disabled people shop in supermarkets, is being tested in Kyoto, in Japan.
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Hubble Finds Smallest Kuiper Belt Object Ever Seen
Space & Earth / Space Exploration
Dec 16, 2009 |
5 / 5 (16) |
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(PhysOrg.com) -- NASA's Hubble Space Telescope has discovered the smallest object ever seen in visible light in the Kuiper Belt, a vast ring of icy debris that is encircling the outer rim of the solar system ...
Biking 2.0: MIT's big wheel in Copenhagen (w/ Video)
Dec 16, 2009 |
3.8 / 5 (10) |
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Yesterday, Dec. 15, at the Copenhagen Conference on Climate Change, MIT researchers debuted the Copenhagen Wheel -- a revolutionary new bicycle wheel that not only boosts power, but can keep track of friends, ...
Organic flash memory developed
15 hours ago |
4.6 / 5 (17) |
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(PhysOrg.com) -- Researchers at the University of Tokyo have developed a non-volatile memory that has the same basic structure as a flash memory but is made from cheap, flexible, organic materials.
Light used to map effect of neurons on one another
Medicine & Health / Neuroscience
11 hours ago |
5 / 5 (2) |
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(PhysOrg.com) -- Scientists at Harvard University have used light and genetic trickery to trace out neurons' ability to excite or inhibit one another, literally shedding new light on the question of how neurons ...
Exploring energy efficiency in multi-scale computing systems
Dec 16, 2009 |
1 / 5 (1) |
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The University of California, San Diego and nine other universities are members of a new research center charged with finding ways to improve the design of computing systems ranging from large data centers ...
IBM Reveals Five Innovations that Will Change Cities in the Next Five Years (w/ Video)
4 hours ago |
4 / 5 (1) |
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Today, IBM unveiled a list of innovations that have the potential to change how people live, work and play in cities around the globe over the next five to ten years.
STEM gets greener: Promoting critical thinking using renewable energy technology
12 hours ago |
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Can building model cars really help create the next generation of electric vehicle designers and engineers? Researchers at North Carolina State University think so. Through a recent grant, they will develop a curriculum that ...
Science's breakthrough of the year: Uncovering 'Ardi'
8 hours ago |
2.3 / 5 (3) |
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The research that brought to light the fossils of Ardipithecus ramidus, a hominid species that lived 4.4 million years ago in what is now Ethiopia, has topped Science's list of this year's most significant s ...
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