A New Accumulator.

New Zealand Graphic, Volume XLVIII, Issue 7, 14 August 1912, Page 2

A New Accumulator.

Professor Hannover, of Copenhagen University, who has just perfected his new electrical accumulator, has informed me (states the Copenhagen correspondent of a London journal) that he obtained his idea at the International Congress for testing materials, held at' Stockholm in 1907, when listening to a paper" read by a French scientist, Professor Osmond.

“The problem to be solved,” said the Professor, "was to manufacture a sheet of lead of the desired porosity. The pores in each sheet number millions, and are caeh smaller than the point of even the very finest needle which it is possible to produce. Having ultimately succeeded, about half a year ago, I started to make some accumulators of the new metal, which I handed to the Electrical Department of the State Railway for test and experiment. These accumulators have now been in use for some six months, and to. all appearance amply justify my expectations. The electrical energy will last without being recharged from four to live tinies as long as any accumulator hitherto known. Professor Hannover has christened the substan e "pore metal.’” With regard to the actual value of the invention, I’rofe-sor Rung, an authority Upon- subjects dealing with electrical engineering, say- that the new accumulators have about four times the capacity of any accumulatin' hitherto invented. The invention will, be says, also carry with it an enormous saving in cost, and he mentions various undertakings where a clear loss of money will in the future 'be changed into profit, ,