A text-book of physics, largely experimental. On the Harvard college "Descriptive list of elementary physical experiments." (1891)
Hall, Edwin Herbert, 1855-1938, Bergen, Joseph Y. (Joseph Young), 1851-1917 · New York, H. Holt and Company · leaf 557
omewhat difficult.It has been accomplished by a young Italian, Marconi, bymaking the original electrical oscillations exceedinglypowerful and by using a much more sensitive receiverthan Hertz employed. It has been found, too, that ver-tical oscillations are better for this purpose than… … Fig. 288. Fig. 289. diameter containing two metal plugs between which is ashort space loosely filled with metal filings. In Fig. 288,which represents in a way the essentials of the receiving ELECTROMAGNETISM. 531 apparatus, c is the coherer, L is a long wire leading fromone end of c to a metal…
Physics
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