| It picks up a time signal from a cesium atomic clock based in Rugby and automatically sets and resets itself. |
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| A second of time is defined as x oscillations of a cesium atom's resonant frequency, and is commonly measured in atomic clocks. |
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| The alkali metals are silver colored except for cesium, which is pale gold. |
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| We're using our big laser system to study the detailed atomic physics of xenon with other alkalis besides rubidium, such as cesium and potassium. |
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| With cesium, pinpointing the erosion's source is difficult because there's no differentiation among sites of origin. |
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| They mapped the patterns made by known elements and discovered many new ones, including rubidium and cesium. |
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| The most accurate laboratory cesium atomic clocks are thousands of times better than commercially produced units. |
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| The most accurate atomic clocks available today use the cesium atom and the normal magnetic fields and detectors. |
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| However, water-soluble rubidium, cesium, thallium, and silver minerals are virtually nonexistent and should pose no complication. |
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| They also can form condensates out of numerous different elements, including sodium, potassium, lithium, cesium, hydrogen and helium. |
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| Researchers are particularly interested in zeolites filled with metal atoms such as cesium. |
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| Later, the radioactive cesium or strontium is trapped in the zeolite and is excreted. |
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| Initial autopsies showed high amounts of radium and cesium in four deer livers. |
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| Another potential application of cesium metal is in the production of low-melting NaKCs eutectic alloy. |
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| Critics question how much strontium and cesium it will remove, and say tritium can lodge inside marine life, and therefore harm humans. |
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| The upshot is that the new aluminum clock has an accuracy nearly 40 times better than the old cesium sort's three parts in 10 million billion. |
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| The best cesium fountain atomic clocks are now predicted to be off by less than one second in more than 50 million years. |
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| While cesium and strontium, the two materials found in the generators, cannot be used to make nuclear weapons, they could contaminate large areas if combined with explosives. |
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| Cesium 137, a radioactive cesium isotope with a mass number of 137 and a half-life of 33 years, is used for gamma irradiation of certain foods and for radiation therapy. |
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| A gamma-ray probe's sensor is usually a sodium iodide or cesium iodide scintillation detector. |
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| Learn how the most stable clock at the National Research Council of Canada, the cesium fountain atomic clock, works. |
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| Some like americium, iodine 129 or cesium 135 can remain several hundred millenia. |
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| An application of cesium was made preoperatively for forty-five patients in compliance with the local treatment protocol. |
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| Primary standard cesium clocks, such as NIST-F1 in Boulder, Colo., are about as large as a railroad flatcar. |
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| In the experiment, we found that when activated by cesium, the indium tin oxide thin film would have a photoemissive effect under the radiation of visible light. |
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| The cesium ions interact with the graphite and eject the carbon ions. |
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| Even at the Chernobyl meltdown in 1986, he pointed out, cesium and iodine were the problem. |
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| On board instrumentation included a high-precision cesium magnometer, a fathometer, side-scan sonar and a StrataBox. |
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| This is a general description of the type of oscillator, whether it be a TCXO, OCXO, DCXO, rubidium, or cesium. |
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| Assessment of the exposure pathways in the uptake and distribution of americium and cesium in cuttlefish at different stages of its life cycle. |
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| Contamination levels are at 3 billion becquerels of cesium per liter of water and 13 billion becquerels of iodine per liter. |
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| Company engineers flew around the world with its cesium beam HP 5060A instrument to synchronize the globe's atomic clocks to within one-millionth of a second. |
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| The publication also includes an article on cesium chloride, an unauthorized natural health product used for the self-treatment of cancer, and its suspected association with heart rhythm disorders. |
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| Aluminum sulfate can thus form alums with sulfates of the singly charged cations of potassium, sodium, ammonium, cesium, and other elements and compounds. |
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| The advantage of studying strontium ions for timekeeping is that the strontium clock reference is narrower and more precise than what can be obtained from using the clock transitions of cesium. |
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| This limit, which improves by a factor 20 previous measurements, is based on the determination of the oscillation frequency of cesium and rubidium, with a relative precision of about 10-15 in atomic fountains. |
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| The principle underlying the cesium clock is that all atoms of cesium-133 are identical and, when they absorb or release energy, produce radiation of exactly the same frequency, which makes the atoms perfect timepieces. |
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| In 1987, a scrap-scavenger in Brazil unwittingly cut up a canister containing cesium powder which he had stolen from an abandoned clinic: the resulting contamination left several people dead and 28 with radiation burns. |
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| At the NRC main lab, the three stratum-1 servers are connected to Leitch 5300 Master Clock drivers which are synchronized to three separate cesium atomic frequency standards. |
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| A Timely Invention... The NRC designs one of the world's earliest cesium beam atomic clocks that is accurate to a few millionths of a second per year. |
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| According to the Applicant, the MV Louisa was involved in conducting sonar and cesium magnetic surveys of the sea floor of the Bay of Cadiz in order to locate and record indications of oil and methane gas. |
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| These PBMCs were inactivated by irradiation with 5000 roentgens in a cesium source irradiator and then washed twice. |
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| Their entire national telephone network is isochronous, with a clock distribution tree radiating from a single, protected cesium reference clock. |
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| Like all carnivores, these fish can bioaccumulate some pollutants or radionuclides such as cesium. |
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| The whole atomic clock system of these wristwatches are contained in a computer chip, while it still needs a cavity full of cesium gas. |
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| Purification of Cryptosporidium oocysts and sporozoites by cesium chloride and percoll gradients. |
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| These horologists prefer clocking vibrating cesium atoms, carefully noting a resonance frequency that is accurate to one second in 20 million years. |
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| Cesium is a naturally occurring element that is extracted from mined pollucite and then treated chemically by Cabot to produce cesium formate brine. |
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| The flat panel detector has a cesium iodide scintillator with a detector quantum efficiency level for high-quality images acquired with reduced x-ray dose exposure. |
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| They emit penetrating gamma radiation that is much more of a hazard than the alpha or beta radiation from cesium, cobalt, strontium or polonium,' LaMastra said. |
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| Cobalt 60 and Cesium 137 are the radiation sources used to irradiate food. |
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| Cesium is a silvery white, shiny metal that is very soft and ductile. |
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| Cesium and rubidium lose their valence electrons especially easily when light strikes their polished surfaces and are photosensitive over the full visible spectrum. |
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