Word: annular
(lookup in dictionary)
(lookup stats)
Dates: during 1950-1959
Sort By: most recent first
(reverse)
Hollywood can proceed to the ultimate in cinematic realism by using a hemispherical screen and central projector (as in a planetarium), by using an annular lens (as sometimes used on submarine periscopes), which presents a doughnut-shaped picture to the eye (or camera) covering 360° around the horizon, and practically to the zenith. This picture, projected back through the same type of lens, would recreate the original scene; the camera could project downward from the center of the theater, and could include two such lenses in a polarized system on a common axis for 3-D; also the vibrating...
Residents and tourists in Antarctica have a real treat in store today, when the sun goes into one of its rare annular eclipses...
...even a partial blotting will be visible in Cambridge, the University Observatory announced last night, adding that Harvard wasn't dispatching any polar expeditions because "annular eclipses aren't very interesting...
...annular eclipse the moon is unusually far from the earth, so that it seems smaller than the full face...