国産水中テレビジョンの実験について

概要

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An aqua-television was assembled by the Nippon Koei Company Ltd., as a good vidicon type tube, the main part of it was accomplished recently in our country. On the end of last March, the first experiment of this machine was undertaken at the Hyogo Fisheries Experimental Station. In the first place, the experiment in the sea water aquarium at the Ecological Laboratory of the Station was done, and succeeded in making clear images of fish motions. It was much interested us to see the images that fish vigorously swim around the machine when baits are thrown into the water. The second experiment was undertaken on the sea two miles off the coast from the Station to see bottom conditions by setting the machine on the deck of ship named Hakuo Maru. But unfortunately, the experiment did not succeeded by the causes as follows: the wiring of the machine was out of orders by violent vibrations of the engine of the ship, want of electricity of batteries and by result of sea sickness of all technicians by rolling ship etc., From these results it is believed that the next experiment will succeed in near future, for such causes can be improved easily.