Word: beaming
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
Instead of taking quick pictures of large parts of the sky, radio telescopes must scan slowly, gathering details one by one. As a radio telescope's beam (its field of sensitivity) moves across the sky, the radio waves collected by the dish are focused on an antenna and detected as an extremely feeble electrical current. This current is amplified by intricate electronic apparatus until it is strong enough to move a finely balanced pen and draw a wiggly line on a strip of paper. Small wiggles mean little or nothing, but a good-sized bulge means that some object...
...observe celestial objects with a single antenna. Instead, two antennas are placed a considerable distance apart and connected electronically so that they function like parts of a single, very large dish. Since a telescope's resolution is proportionate to its width, the double antenna has a far narrower beam than a single dish. Even finer resolution is obtained by long, rocking metal troughs that gather radio waves and focus them so that they interact with waves gathered by another antenna running at right angles to the first. In Australia, and at Cambridge University. England, such intricate apparatus record information...
...only two dailies in town. The morning Enquirer has been a chain possession since 1956, but Publisher Roger Ferger does not go to the annual meetings (he is not invited) and does not receive the Washington-written editorials (he would not run them). Nor does the Scripps-Howard lighthouse beam from the Enquirer's masthead. The Enquirer endorsed Ohio Republican William O'Neill for Governor in 1958, the Post & Times-Star supported Democrat Mike Di Salle. > To an even greater degree than the Cincinnati Post, the Cleveland Press picks local candidates without regard to their political hue. After...
...side of the experimental hall, scientists have constructed one of the most important pieces of apparatus to be used in the C.E.A.'s experimental program: a liquid helium cryostat. This device will cool and liquify gases, principally hydrogen, for beam targets and bubble chambers. The bubble chambers are large jars of liquid hydrogen, and are used as tracking devices. Many short-lived, invisible particles leave a track of bubbles as they travel through the hydrogen. These tracks can be photographed and later studied...
Standing about on the floor of the hall are a number of large bending magnets, created to deflect the beam toward targets, as it comes from the accelerator itself. Adjacent to the hall is a huge machine shop, enabling technicians to turn out special fittings on the spot...