Word: electromagneticism
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Dehmelt has performed other small miracles as well. By creating an electromagnetic "cradle," he has kept a lone electron suspended in a vacuum for months at a time. He has also succeeded in observing the fabled quantum jump of a single trapped atom as it absorbed energy and then emitted...
Similar concerns have arisen in other nations as well. To calm public protest, a Canadian utility proposed buying all the homes along a 90-mile power line that is under construction. But residents became so upset that the government ordered a halt to work on a segment of the line...
The concerns have some justification. Last month the U.S. Office of Technology Assessment issued a report concluding that power lines are a legitimate health issue. More troubling, it suggested that household wiring, appliances like toasters and electric blankets, and such items as TV sets and computer terminals, all of which...
Laboratory experiments have shown that electric and magnetic fields can exert an influence on biological processes. Cells naturally maintain an electric charge across their membranes that is essential to the normal functioning of human tissues. In cell cultures, exposure to electromagnetic fields can affect the flow of chemicals across membranes...
But all the studies so far have merely raised more questions. For example, How exactly do electromagnetic fields produce the alterations in cells? Are the changes temporary or permanent? Do they reflect normal adjustment or a harmful effect? Equally mystifying is what kind of exposure might constitute a danger. Is...