Word: repelled
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Dates: during 1980-1989
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...superconducting materials and ever higher temperature ranges. An effect that once could be detected only with sophisticated equipment has become a common sideshow at conferences: a sample of one of the new materials is placed in a dish of liquid nitrogen, and a magnet placed above it. Since superconductors repel magnetic fields, a phenomenon called the Meissner effect, the magnet remains suspended in midair...
...principle behind the maglev is simple: opposite magnetic poles attract each other; like poles repel. In Japan's version, eight superconducting electromagnets are built into the sides of each train car, and thousands of metal coils are set into the floor of the guideway. When the train is in motion, the electromagnets on the train induce electric currents in the guideway coils, which then themselves become electromagnets. As power is increased, the opposing sets of magnets repel each other and lift the train into the air. Two other rows of electromagnets, one on each wall of the U- shaped guideway...
Goaded into action, EPA officials commandeered a Coast Guard cutter last week and were en route to a rendezvous with the barge when they got word that the Mobro was headed for Mexico. But there too it was turned away; the Mexican navy even went on alert to repel the Yanqui rubbish...
...star about the size of the sun, the collapse stops after several intermediate steps when the stellar material is compressed so much that its atoms virtually touch, forming what physicists call degenerate matter; what prevents further collapse is the tendency of the atoms' negatively charged electrons to repel one another. The star has become a white dwarf. Says David Branch, an astrophysicist at the University of Oklahoma: "It's the size of the earth but has the mass...
...just the atoms that are touching, as in a white dwarf, but their nuclei. Under the immense pressure, the electrons, no longer able to repel one another, are squeezed into the nuclei, which ordinarily contain just protons and neutrons. In about a thousandth of a second, the negatively charged electrons combine with positively charged protons to form additional neutrons; the process also produces the ethereal neutrinos, which effortlessly zip through the star's outer layers and into space. Under these circumstances, there is a limit to how much the neutrons can be compressed. As gravity tightens its grip further...