電気漁綱の研究(第II報) : -交流兩波整流・半波整流の刺戟効果-(1)

概要

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The second method to economize the electric power by which fishes shall be electrified or electrocuted is to be found in the studies on the froms of electric waves. To get the clue of the finding, the author compared the effects of stimuli by the three electric currents, or alternative current (A. C.) and full-wave rectifying current (F. R. C.) and half-wave rectifying current (H. R. C.). The results got are as follows:- a) To equilize the strength of of stimuli with A. C, . from 2 to 4 times electric power is needed in F. R. C., from 1/3 to 2/3 electric power is needed in H. R. C.. b) In the stimuli by R. C., the reaction is more acute. When the anode is set at the headside and the cathode at the tail-side, than the reverse case. The difference between the sensibilities by those two settings is more remarkable in small fishes, but it becomes unperceived in large fishes. c) In small f ishes electrifying voltage are low; on the contrary, in big fishes electrocuting voltage are low. These facts suggest us any methods to keep larvae of fishes from the annihilating effects.
公益社団法人日本水産学会の論文