Word: contact
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Dates: during 2000-2009
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...particular how popular you are, may also affect how good a candidate for a flu vaccine you are. Vaccinating an entire population may be less efficient than choosing people at random, asking them to name their friends, and then vaccinating those friends. The friends are likely to come into contact with many people, so vaccinating them might do the most good, the authors argue. "You can achieve the same level of protection for the population at one-third the cost doing an intervention like this," Fowler said, according to CNN. He and Christakis hope to do a preliminary experiment monitoring...
...prosecution’s case largely rested on phone records logging contact between Borukhova and Mallayev in the days leading up to the murder. Dershowitz questioned the content of those conversations yesterday, saying there was no proof that Borukhova directed Mallayev to kill her husband in those phone calls...
...What’s new is that above a critical electric field, the water drops show a direct contact and repel—against what is believed [will happen],” said Bird, a Harvard doctoral student in engineering. Instead of infinitely increasing the coalescing speed of water, an electric field above the critical level causes the drops to deform, combine briefly, and then repel, never actually coalescing...
...explanation for this new find, according to Bird, lies in the geometry of electrically charged water drops. While normal, uncharged water drops have round curves, charged ones have parabolic curves. So while normal drops repel or coalesce upon contact depending on the size of the drop and speed of collision, the unusual shape of charged drops causes them to come together briefly then separate...
...electric field is bringing the drops together until they contact, and then it’s just geometry from there on—nothing to do with electric fields,” said Bird...