Word: sun
(lookup in dictionary)
(lookup stats)
Dates: during 1970-1979
Sort By: most recent first
(reverse)
...June air was torn by the peal of church bells, the buzz of helicopters, the crackle of loudspeaker commands, the waves of thundering applause, the melodious drone of old hymns, the murmur of Masses being said, dozens of them, beneath the burning sun of an early Polish summer...
Under a blazing African sun, the guerrillas' battered trucks crashed through the thick bush of southern Angola. Small bands of soldiers trekked beside the sandy roads. Their destination: a clearing in the jungle known only by the code name Chipundo. There, among the camouflaged grass huts of a hastily erected "instant village," a burly, bearded man with skin the color of oiled ebony embraced each new arrival. He was Jonas Savimbi, 44, who had convened the annual congress of the National Union for the Total Independence of Angola (UNITA) to prove a point: far from being wiped...
Like leftover props from a sci-fi thriller movie, strange apparitions are appearing across the U.S. In the deserts of New Mexico, huge banks of motorized mirrors track the sun and focus its rays into a cyclops-like eye of red heat. A mountain in North Carolina has been crowned with what appears to be a giant aircraft propeller. A large man-made atoll, resembling a top that Gulliver would have spun for the Lilliputians, may soon be floating off the coast of California. All are imaginative, experimental devices to help find and develop alternative energies, which would alleviate...
Solar. The sun's output of energy is enormous, and environmentalists regard it as the most pleasing energy alternative. But solar technology is in its infancy, and existing methods of drawing heat and electricity from the sun are inefficient and expensive. Today solar contributes less than 1% of the nation's needs...
...most common solar devices, accounting for 95% of sales, are the flat, boxlike, conventional thermal units that sit on rooftops. These use the sun's rays to heat water, which in turn heats home water systems. A basic series of units for a one-family home costs about $2,000 and saves only about $40 a year in fuel bills. The promising new frontier is photovoltaics, the direct conversion of sunlight into electricity by using silicon-crystal panels. Though the price of photovoltaic cells has been cut in half since 1975, the cost is still $9 per watt,*equal...