inches in diameter by 12 inches stroke. 1 A CURIOUS EXAMPLE OF PETRIFACTION. ' PHOTOGRAPHING THE ELECTRIC ARC. BY PROF. A. C. SCOTT. the correctness of this representation PETRIFIED PERU VIAN INDIAN WOMAN EXHIBITED AT THE PAN-AMERICAN EXPOSITION. 1 Conventional picture of the arc. 2. Continuous current open arc after burning seventy minutes. 8. The same after burning two hours. 4. Alternating current arc after burning two hours. 6. and 8. Inclosed arcs. 'Z. Term reversed negative. PHOT °GRAPHING THE ELECTRIC ABC UNDER VARIOUS CONDITIONS., scientific american, 1901-10-19
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inches, diameter, 12 inches stroke, 1, CURIOUS EXAMPLE, PETRIFACTION, ' PHOTOGRAPHING, ELECTRIC ARC, PROF, A, C, SCOTT, correctness, representation PETRIFIED PERU VIAN INDIAN WOMAN EXHIBITED, PAN-AMERICAN EXPOSITION, 1 Conventional picture, arc, 2, Continuous current open arc, burning seventy minutes, 8, burning two hours, 4, Alternating current arc, burning two hours, 6, 8, Inclosed arcs, 'Z, Term reversed negative, PHOT °GRAPHING, ELECTRIC ABC UNDER VARIOUS CONDITIONS, scientific american, 1901-10-19, science, scientific, sciences, mind, health, tech, sustainability, publication, lab, sciam, sa, scientist, research, american, experiment, education, discovery, technology, analysis, magazine, u.s., insights, developments, weekly, broadsheet, inventor, innovation, inventions, patented, industrial revolution, emerging, trends, monthly magazine, united states, engravings, curious works, paper, discover, Scientific Paper, Weekly Journal, Practical Information, Art, Science, Mechanics, Chemistry, Manufactures, research, education, scientist, innovation, 19th century, vintage, america, Rufus M. Porter, 1845, journal, academic, newspaper illustrations, retro style, old-fashioned, media illustrations, victorian style, news, newspaperheadline, 19th century style, illustration, journalism
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