Word: coppering
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Your Art article [TIME, Aug. 10] about Harvard's model forest says that the leaves were "etched out of paper-thin sheets of copper picked up with a magnet...
...that far behind in popular news of the world of science that men have learned to attract copper with magnets and I never heard...
...tiny copper leaves are picked up by magnet because they are soldered on steel wire...
Twig, branch, and bole, each miniature tree in the Harvard Forest display was built up of strand upon strand of fine copper wire, then soldered and painted. Microscopic details like vines, pine needles and cones were etched out of paper-thin sheets of copper picked up with a magnet. Dentists' picks and scrapers were used for modeling tools. Making rocks was the most fun. A double fistful of whiting and glue was allowed to harden, then hurled full force against the studio wall. The fragments, painted in oils and dusted with dry color, were rocks...
Greatest REA triumph was the ramshackle old cow barn with its dirt floor. To protect the 70 cows from flies there were electrically-charged copper screens. When a fly tried to get through the ½in. openings, there was a little flash, a ping -and the dead fly fell into a metal trough at the bottom of the window. Each cow had its individual drinking fountain, which spouted water when nuzzled. Cows were cooled by electric fans, clipped by electric razors, milked by electric machines. The hay they ate was hoisted into the trough by electric motors. The milk they...