Word: sunlight
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...narrow band of microwaves about 1.4 in. long ( 8,000 megacycles"). Other waves will not be reflected efficiently, and even if the wire belt causes some unexpected kind of trouble for radio astronomers, it will not last forever. The almost invisible wires are strongly affected by the pressure of sunlight. In five years or less, they will be pushed out of their orbit and will burn like junior meteors in the atmosphere...
...could be used to relay radio microwaves around the curve of the earth. But even before the first rocket of the Air Force Project West Ford blasted off its pad, the protests of outraged scientists soared into orbit. Metal wires, the world's astronomers warned, would also reflect sunlight, fogging the photographic plates of optical telescopes. They would foul up radio astronomy by reflecting man-made radio waves and masquerading as distant stars or galaxies...
...studios of the center are shielded from direct sunlight by concrete breakers. The exact positioning of these visors is not duplicated in any previous Le Corbusier work but is vaguely similar to those used in the government buildings of Chandigarh, India, and in designs for a proposed construction in Algiers which was never realized...
Nearly all that we know about the moon has come to us in visible sunlight, reflected from the moon toward the earth. There are other, longer waves that travel invisibly between the moon and the earth, which can add knowledge about our satellite: the infrared, or radiated heat, rays. Although thermal photography is not new, the Harvard College Observatory has recently built one of the most sensitive instruments in existence for making thermal "pictures" of the moon...
Synge's plot saves its surprises for the end. But what lingers behind is the recollection of all that brave, gorgeous language and one fine scene when Christy and Pegeen declare their love against a hillock of dune grass, with the dappling sunlight going dim and bright all the while behind the hurrying October clouds...