Word: attracted
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Dates: during 2000-2009
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...common knowledge that like charges repel and unlike charges attract, but it is less obvious that even charge-neutral objects have fluctuating charges...
...have two similar objects, like two dancers following steps, they tend to attract each other,” said Parsegian. “But with two unlike objects there is the possibility that they repel...
...agency's bleak outlook means the Postal Service will take more drastic steps. Some are primarily intended to attract more customers. Starting Jan. 18, for instance, online discounts and other savings plans begun in May 2008 will expand to make Postal Service prices more competitive - a move that could be showcased in a spring advertising campaign that will promote Priority Mail...
Everything in the universe - metals, gases, dogs, doughnuts - is made of materials with positive and negative charges. Opposite charges attract each other; identical charges repel each other. What prevents us from sticking to anything with an opposite charge is that all these forces have to be properly aligned before you can see them at work. "The materials are in motion, but sometimes the dance of the charges allows them to fall in step," says NIH physicist Adrian Parsegian, one of the authors of the paper. "When that happens, you get attractive forces...
What makes things trickier still is that not all attraction is equal. Some materials are drawn much more powerfully together than others - particularly on the nano (billionth of a meter) scale. And that difference can be exploited. In the Nature experiment, the research team began by placing a microscopically small sphere of gold on a glass surface. Gold and glass get along well enough and under the right circumstances will attract. But what they both like a whole lot more is a liquid called bromobenzene. When the researchers introduced a little bromobenzene to the other two materials, they both began...