Word: diameterically
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SAO has an observing station beneath the clear skies of Mt. Hopkins, Arizona, and HCO owns a station beyond the polluted skies of Boston, in the town of Harvard, Mass. The equipment at HCO's station includes a large, optical telescope and a radiotelescope--a movable disk 84 feet across...
The satellite Lageos, conceived and designed by scientists in the Center's division of geoastronomy, may provide a measure of continental drift. The satellite, now in orbit, is two feet in diameter, and is covered with 426 small mirrors. Scientists at two different ground stations direct lasers at the satellite...
A descendant of World War II's German V-l "buzz bomb," the cruise is small (a typical model is about 20 ft. long and 20 in. in diameter) and relatively cheap (well under $1 million each). Different versions have been successfully test-fired from submerged submarines, surface ships...
The Cornell team, headed by Astronomer James Elliot, made its observation last month while flying in a specially equipped C-141 "airborne observatory" through the night sky southwest of Australia. The astronomers had aimed the aircraft's 90-cm. (36-in.) telescope at Uranus, which was passing in front...
If the breast tumor is still small-no more than 4 cm. (1½ in.) in diameter -doctors first excise the growth in a relatively simple surgical procedure called a lumpectomy. Larger tumors are left in place because their removal would destroy the shape of the breast. Then the radioactive...