News tagged with detector
Quantum microphone captures extremely weak sound
(PhysOrg.com) -- Scientists from Chalmers have demonstrated a new kind of detector for sound at the level of quietness of quantum mechanics. The result offers prospects of a new class of quantum hybrid circuits ...
Feb 06, 2012 |
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Physicists develop nano-level sound detector
(PhysOrg.com) -- For a couple of decades now, physicists have known that if a very small laser beam is pointed at a microscopic particle, it could be held in place due to the very small electrical field that ...
Jan 12, 2012 |
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Smoke particles are not all the 'SAME'
(PhysOrg.com) -- Where there's smoke, you need a functioning smoke detector that can tell the difference between, say, smoke particles and dust. Yet in the microgravity environment of the International Space ...
Space & Earth / Space Exploration
Jan 05, 2012 |
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Physicist creates scale model of LHC ATLAS experiment of out LEGO blocks
(PhysOrg.com) -- The Large Hadron Collider at the European Organization for Nuclear Research (CERN) in Switzerland has generated a lot of news of late, e.g. the announcement that a team had found what it believes ...
Dec 30, 2011 |
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New detectors could provide easy visual identification of toxins or pathogens
Researchers at MIT have developed a new way of revealing the presence of specific chemicals — whether toxins, disease markers, pathogens or explosives. The system visually signals the presence of a target ...
Chemistry / Analytical Chemistry
Dec 14, 2011 |
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Test paves way for 15,000-ton neutrino detector
Last month, the preparations for the assembly of the NOvA neutrino detector passed a pivotal test in an assembly building at the Department of Energy’s Fermi National Accelerator Laboratory.
Dec 13, 2011 |
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Dawn spacecraft spirals down to lowest orbit
(PhysOrg.com) -- NASA's Dawn spacecraft successfully maneuvered into its closest orbit around the giant asteroid Vesta today, beginning a new phase of science observations. The spacecraft is now circling Vesta ...
Space & Earth / Space Exploration
Dec 13, 2011 |
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First proof of single atomic layer material with zero electrical resistance
A research group at the NIMS International Center for Materials Nanoarchitectonics (MANA) has proved that the electrical resistance of a metal single atomic layer on a silicon surface becomes zero by superconductivity.
Nov 24, 2011 |
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Graphene foam detects explosives, emissions better than today's gas sensors
(PhysOrg.com) -- A new study from Rensselaer Polytechnic Institute demonstrates how graphene foam can outperform leading commercial gas sensors in detecting potentially dangerous and explosive chemicals. The ...
Nanotechnology / Nanomaterials
Nov 24, 2011 |
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Blocked holes can enhance rather than stop light going through
Conventional wisdom would say that blocking a hole would prevent light from going through it, but Princeton University engineers have discovered the opposite to be true. A research team has found that placing ...
Nov 22, 2011 |
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EU adopts guidelines on airport body scanners
(AP) -- The European Union adopted new guidelines Monday on using body scanners at airports, hoping to address the privacy concerns that have delayed their implementation across the continent.
Nov 14, 2011 |
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New hybrid detector monitors alpha, beta, and gamma radiation simultaneously
By combining three layers of detection into one new device, a team of researchers from Japan has proposed a new way to monitor radiation levels at power plant accident sites. The device would be more economical that using ...
Nov 08, 2011 |
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Elimination of detrimental cross-talks in single-photon detectors pushes quantum optics to new limits
Light and electric current can both be used for computing, albeit with key differences. Whereas conventional computers do logic through the movement of electrons, newer and faster computers called quantum ...
Oct 28, 2011 |
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'Pacman' nebula gets some teeth
(PhysOrg.com) -- To visible-light telescopes, this star-forming cloud appears to be chomping through the cosmos, earning it the nickname the "Pacman" nebula, like the famous Pac-Man video game that debuted ...
Oct 27, 2011 |
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Spitzer detects comet storm in nearby solar system
(PhysOrg.com) -- NASA's Spitzer Space Telescope has detected signs of icy bodies raining down in an alien solar system. The downpour resembles our own solar system several billion years ago during a period ...
Oct 20, 2011 |
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Sensor
A sensor (also called detector) 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-in-glass 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, most sensors are calibrated against known standards.
For more information about Sensor, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
