Word: cesium
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Match with Cesium. If earth time does indeed slow down relative to the pulsar clock in January, and speed up correspondingly in June, the pulsar signals (which have blipped at a constant frequency since they were discovered) would appear to increase their repetition rates as earth clocks slowed down and decrease them as earth time speeded up. Hoffmann's plan was immediately snapped up by Dror Sadeh, a Tel Aviv University physicist currently attached to the U.S. Naval Research Laboratory at Washington...
...CESIUM CHLORIDE, a salt somewhat similar to table salt, is commonly used in density studies, but animal ribosomes were found to be unstable in this solution. The Russians circumvented this difficulty by "fixing" the ribosomes by tanning them with formaldehyde. Yet, according to Kafatos, this did not end the problem because tanning may alter the particles chemically so that the results may not be definitive. After a years's work, Kafatos, in collaboration with a colleague, Ned Feder, now at the National Institute of Health, synthesized a different salt to use in the centrifuge in which ribosomes would be stable...
...engine tested in a 30-minute, 3,200-mile flight over the Pacific got its thrust by passing vaporized cesium metal through a hot tungsten filter. This action strips electrons from the cesium, speeds the positively charged ions out the rear of the engine. The great advantage of this process is that it requires remarkably little fuel-only one-tenth of that for a conventional chemical rocket. Even the smallest ion engine could keep a satellite on its right course for more than ten years by giving it gradual nudges. On a 300-day trip to Mars, a full-scale...
...looks good enough to eat-but is it? A hoarse, anxious, motherlike voice is heard: "Know what people used to do? They used to explode bombs in the air. You know children should have lots of vitamin A and calcium. But they shouldn't have strontium 90 or cesium 137. These things come from atomic bombs, and they're radioactive. They make you die. Do you know what people finally did? They got together and signed a nuclear test ban treaty. And then the radioactive poison started to go away. But now there...
...International Bureau of Weights and Measures will discuss at its meeting in Paris next month the adoption of a new official standard for measuring a second. If a new standard is adopted, a second will be as long as 9,192,631,770 cycles of vibration of a cesium atom. No more, no less. Well, perhaps...