Popular science monthly . under suchcircumstances. During severe winterstorms it is not infrequent to hear ofelectrocutions, due to fallen live wireshidden in debris. Expending Four Tons of Energy inPlaying the Cello ASIAIPLE air pla>ed on the \-iolon-cello calls for a total expenditure ofenergy equal to two and three quarterpounds per note or more than four tonsof energy for the single selection. Thisstatement is vouched for by ProfessorPoffenberger, of Columbia Universit>-,who made some experiments in hislaboratory with the aid of the famousDutch cellist Michael Penha—experi-ments made
Popular science monthly . under suchcircumstances. During severe winterstorms it is not infrequent to hear ofelectrocutions, due to fallen live wireshidden in debris. Expending Four Tons of Energy inPlaying the Cello ASIAIPLE air pla>ed on the \-iolon-cello calls for a total expenditure ofenergy equal to two and three quarterpounds per note or more than four tonsof energy for the single selection. Thisstatement is vouched for by ProfessorPoffenberger, of Columbia Universit>-,who made some experiments in hislaboratory with the aid of the famousDutch cellist Michael Penha—experi-ments made to determine the amount ofsheer physical strength recjuired to playthe violoncello in the style of a great special apparatus is necessary toconduct the tests. Against the surfaceof a revolving carbon cylinder is sus-pended a chalked point which is actuatedby a slender wire attached to the musi-cians finger. At each pressure the tensionvibrates along the communicating con-nection and recordsthe energy When Michael Pcnha played n simple Bach aria this instru-ment registered an expenditure of more tlian four tons of cnergj Popular Science Monthly 591 At a recent test Michael Pcnha atlimes raised the point to a distanceequaling three pounds in weight, thatbeing the record of the forefinger. Thepressure alone required to produce thecharacteristically luscious tones of asimple Bach aria averaged two and threequarters pounds per note. The totalenergy expended amounted to ninethousand four himdrcd and fourteenpounds, or more than four tons. This same amount of energ\ would besufiicient to carry a laborer through hisentire days work. Yet it took but fiveminutes for the artist to exert the sameamount of force. Old Dobbin Carries His UmbrellaWith Him A CINCINNATI teamster who wantsto make life more endurable for hishorse during the torrid summer dayswhen it is out in the broiling sun earninga living for him, has devised a horseumbrella which consists of a canopy ofc
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
