Electricity At Sea

Some interesting experiments have been made on the vlsibility oí the electric light at sea by the government of the United States, Germany and the Netherlands. The word "visible" in the report on the tests means visible on a dark night with a clear atmosphere. The result of the experience of the Germán committee was that a white light of one candle power was visible 1.4 miles on a dark, clear night, and one mile on a rainy night. The American tests resulted as follows: In very clear weather a light of one candle power was plainly visible at one nautical mile; one of three candle power at two miles; one of ten candle power was seen by the aid of a binocular at four muts; one of twenty-nine candle power faiaily at five miles, and one of thirty-three candle power plainly at live mllert. On an exceptionally clear night a white light of 3.2 candle power was rearïily distinguished at three miles; one of 5.6 candle power at four miles and one of 17.2 candle power at five miies. In the Dutch experiments the results were almost similar, but a 16 candle power light was plainly visible at five miles. For a green light the power required was two for one mile, fifteen for two miles, fifty-one for three miles and 106 for four miles. The result of tests with a red light were almost identical with those with green, but it was conclusively proved that a white light was by far the most easily seen.