Science: Fish Story

In ichthyophagous Japan, good fishing techniques are a matter of national importance. So the Japanese Government asked Dr. Tadayoshi Sasaki, of Tokyo's Institute of Physical and Chemical Research, to work out a commercial way of using light to catch more fish. Last week Dr. Sasaki described a fiendishly clever system of luring fish to their doom.

At some distance offshore, Dr. Sasaki places a roughly V-shaped net. Inside the net, under water, he hangs a sealed-beam headlight bulb fed with current from a storage battery, the beam pointing out of the net. He hangs other bulbs, giving diffused light, in a long...

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