Word: emit
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...more produces detectable X rays. Boiling off the incandescent cathode of the tube, electrons are attracted and accelerated by the high positive voltage on the tube's anode and smash into it at great speed. Struck by the electrons, the atoms of the metallic anode vibrate violently and emit energy in the form of X rays, which can burn the skin, injure the eyes and cause genetic damage...
Last year, Walker and another colleague discovered what may prove to be an even more sensitive dating method-the measurement of alpha-particle tracks. Uranium nuclei frequently emit an alpha particle. As the particle is expelled, the nucleus recoils. Walker reasoned that "recoil tracks would be there, so I looked for them." He discovered that observable recoil tracks occurred 4,000 times more than fission tracks. When acid etching and track counting are perfected for alpha particles, the method should provide a means of dating infinitesimally small objects and those too young to have accumulated measurable amounts of fission tracks...
...aspirants-Nixon and Romney-are openly seeking the nomination, despite the fact that they still emit "Who, me?" disclaimers for public consumption. Both are concerned at having launched their campaigns so early in the game, since relentless exposure over a long period can be deadly. But circumstances forced their hands. In Romney's case, it was a tide of favorable publicity and felicitous polls in the aftermath of his 570,000-vote third-term victory last November. Nixon was prematurely jolted into action by Reagan's sudden rise as a potential challenger for the conservative support that...
...light-years in diameter. And a new Caltech study suggests that quasars have an immensely bright core which is only a few "light days" in diameter. Yet if the quasars are as far out in space as their red shifts seem to indicate, they must emit 100 times as much light as an entire galaxy in order to appear as bright and distinct as they...
With receivers as small and totable as a hip flask, one-way radio pagers are now a hot item. Some emit only a beep that tells the recipient to call his office from wherever he is. Others give out a beep-voice combination. Either way, the system is simple in concept: Party A wants to reach Party B, who is nowhere near a telephone. Party A calls a radio-paging center. There, an operator sends out an individually toned beep, or a voice instruction, to Party B, who is wearing a paging device. Party B goes to a telephone...