IPC's current monitors are wide band current transformers that measure ac or pulse currents with an oscilloscope or other voltage-sensing instrument.
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Supercomputer probes famous but messy particle split
New Scientist
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A team of researchers from the U.K., the U.S. and Germany has used the IBM BlueGene/P supercomputer at Argonne National Laboratory in Illinois, plus other supercomputers, to simulate a kaon decaying into two pions for the first time. Read the associated Physical Review Letters abstract.
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Ultrasound waves with a twist
Physics World
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An international team of physicists has simultaneously measured the angular momentum and torque exerted by acoustic waves for the first time. It found that this ratio agrees exactly with the predicted theory for acoustic and optical waves. According to the researchers, their techniques may also have potential in medical imaging and treatment. Read the abstract of the forthcoming Physical Review Letters article.
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Oxford professor Steven Rawlings death: No further action
BBC News
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Oxford astrophysicist Steven Rawlings, 50, was found dead at a bungalow in Southmoor, U.K., belonging to fellow university professor Dr. Devinder Sivia. Sivia, 49, was arrested on suspicion of murder and bailed following the death on Jan. 12.
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Physicists discover new type of particle - sort of
ScienceNOW
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In 1937, after the rise of quantum mechanics, Ettore Majorana, an Italian theoretical physicist, realized that the new physics implied the existence of a novel type of particles, now called Majorana fermions. After a 75-year hunt, researchers have now spotted the first solid evidence of their existence. And their discovery could hold the key to finally creating workable quantum computers.
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This NI tutorial shows how to use LabVIEW and the LabVIEW Control Design and Simulation Module to construct a dynamic system from basic physical laws. MORE
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Sacher Lasertechnik offers fiber coupled optical amplifiers. Available wavelength: 650nm to 1120nm. Free space power of up to 2.5W @ 780nm and 2W @ 850nm are achieved with an M²<1.7. Contact us at 1-800-352-3639 or
www.sacher-laser.com.
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Returns to “OFF” position in case of power failure
- Integrated return spring
- 0.5” (13mm) & 1” (25mm) aperture
- High reliability, long life available
- 5V, 12V or 24V dc operation
- Boxed unit available
- Mounting to optical table available
- Simple drive circuit for TTL input
- Low cost
- Standard and custom
- Special pricing for OEM applications
- Stock items
- RoHS compliant
- Optional position indicators
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We manufacture precision electronic instrumentation for both laboratory and industrial process control applications, and offer a full line of cryogenic temperature controllers, monitors, cryogenic accessories and temperature sensors. Instruments feature a wide temperature range (operation from 20mK to over 1500K), network connectivity and supports a wider variety of temperature sensors than any other manufacturer. MORE
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Quantum Design manufactures a full line of cryogen-free, automated material characterization systems for the scientific community. These systems provide temperatures from 0.05 to 1000 K and magnet fields up to 16 tesla. Cryogen-free systems include the Physical Property Measurement System (PPMS®), MPMS SQUID VSM, VersaLab, and the new PPMS DynaCool. MORE
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The mathematical proof that got a physicist out of a traffic ticket
io9
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Dmitri Krioukov, a UC San Diego physicist, was recently given a ticket for running a stop sign. He went to court to argue the ticket, armed with a scientific paper that mathematically demonstrated that he really had stopped. He won. Read the associated Physics Central story.
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Physicists create first long-distance quantum link
ScienceNOW
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For more than a decade, physicists have been developing quantum-mechanical methods to pass secret messages without fear that they could be intercepted. But they still haven't created a true quantum network - the fully quantum-mechanical analog to an ordinary telecommunications network in which an uncrackable connection can be forged between any two stations or "nodes" in a network. Now, a team of researchers in Germany has built the first true quantum link using two widely separated atoms. A complete network could be constructed by combining many such links, the researchers say.
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VAT will preview a variety of vacuum valves in Santa Clara at booth #616. Stop by or check out our new website to learn more about VAT! MORE
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STACIS® employs advanced inertial vibration sensors and piezoelectric actuators to cancel vibration by sensing floor vibration, then expanding and contracting the actuators to filter out floor motion.
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Astronomers peer into stellar sandstorms
Physics World
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An international team of astronomers has found a potential explanation of how red-giant stars lose the bulk of their mass towards the end of their lives - a process currently not fully understood.
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Infant galaxy offers tantalizing peek at early Universe
Nature News
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Astronomers are claiming a new benchmark in the quest to see the Universe's first galaxies. By taking advantage of a rare cosmic zoom lens - in which the gravity of a large mass magnifies light from objects in the distant background - a team of U.S. and European researchers has spotted a galaxy so remote its light was emitted just 490 million years after the Big Bang, when the Universe was a mere 3.6 percent of its current age.
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Where do space and time come from? New theory offers answers, if only physicists can figure it out
Scientific American
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The theory was put forward in the late 1980s by Russian physicists Mikhail Vasiliev and the late Efin Fradkin of the Lebedev Institute in Moscow, but is so mathematically complex and conceptually opaque that whenever someone brought it up, most theorists started talking about the weather, soccer, reality TV - anything but that theory.
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How planets paint rings around stars
TIME
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For something formed by the iron hand of physics, the universe has a lovely aesthetic sense - its galaxies spiral, its novas explode, its nebuale spread like great, sculpted clouds. For sheer cosmic delicacy, however, few things can touch the planetary ring. Neptune has one, Uranus has one, and Saturn, of course, has a braided, nested collection of them. Now, a less well-known ring around an otherwise unremarkable star is providing a new way to find Earth-like planets beyond our own solar system.
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FT Spectrometers that cover UV to THz spectral range:
- Vacuum and purge models
- Nanosecond temporal resolution
- Modulation/demodulation experiments
- Spectral imaging
- Interface with custom external optics
Visit our website at www.brukeroptics.com for more information
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Our goal is to develop and manufacture today the cryorefrigerators required for tomorrow.
WORLD MANUFACTURERS OF:
•Cryorefrigerators: Pulse Tube and Gifford McMahon Cycle
• Liquid Helium Plants and Liquid Helium Management Products
• Liquid Nitrogen Plants
• Helium Recovery Systems
To learn more, click here.
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Need fast photonic timing components with a wide range of spectral response? PHOTONIS offers a family of high-speed, high resolution components to support a variety of applications. Many components are customizable by photocathode, configuration or other options. Ideal for high-energy physics, non-destructive testing, fluorescence, LIDAR, communications or single photon counting.
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