 The great variety of material used in these experiments led me to believe that sonorousness under such circumstances would be found to be a general property of all matter. At that time we had failed to obtain audible effects from masses of the various...  Bulletin of the Philosophical Society of Washington - Page 143by Philosophical Society of Washington (Washington, D.C.), Philosophical Society of Washington, Washington, D.C. - 1880Full view - About this book
 | Science - 1880 - 1188 pages
...the molecular disturbance produced by light is chiefly a surface action, and that the vibration has to be transmitted through the mass of the substance in order to affect the ear. On this account we have endeavored to lead to the ear air that is directly in contact with the illuminated... | |
 | Science - 1881 - 1100 pages
...of Science, last August, I described certain experiments made by Mr. Sumner Tainter and myself which had resulted in the construction of a " Photophone"...masses be found to be as sonorous as thin diaphragms. The first experiments made to verify this hypothesis pointed towards success. A beam of sunlight was... | |
 | Science - 1881 - 904 pages
...resulted in the construction of a " Photophone," or apparatus for the production of sound by light ; f and it will be my object to-day to describe the progress...masses be found to be as ' sonorous as thin diaphragms. The first experiments made to verify * A paper read before the National Academy of Arts and Sciences,... | |
 | Sir Norman Lockyer - Electronic journals - 1881 - 664 pages
...PRODUCTION OF SOUND BY RADIANT EN ERG Y i TN my Boston paper on the photophone (NATURE, vol. xxii. p. 500) the discovery was announced that thin disks of very...directly in contact with the illuminated surface, Icuder sounds might be obtained, and solid masses be found to be as sonorous as thin diaphragms. The... | |
 | Sir Norman Lockyer - Electronic journals - 1881 - 658 pages
...OF SOUND BY RADIANT ENERGY1 TN my Boston paper on the photophone (NATURE, vol. xxii. •*• p. 500) the discovery was announced that thin disks of very...directly in contact with the illuminated surface, Icuder sounds might be obtained, and solid masses be found to be as sonorous as thin diaphragms. The... | |
 | Electrical engineering - 1881 - 566 pages
...rapidly-interrupted beam of sun-light. The great variety of material used in these experiments led me to bel,eve that sonorousness under such circumstances would be...masses be found to be as sonorous as thin diaphragms. The first experiments made to verify this hypothesis pointed towards success. A beam of sunlight was... | |
 | Sir Norman Lockyer - Electronic journals - 1881 - 872 pages
...we had failed to obtain audible effects from masses of the various substances which became ; onorous in the condition of thin diaphragms, but this failure...illuminated surface, louder sounds might be obtained, atd solid masses be found to be as sonorous as thin diaphragms. The first experiments made to verify... | |
 | 1881 - 898 pages
...the molecular disturbance produced by light is chiefly a surface action, and that the vibration has to be transmitted through the mass of the substance in order to affect the ear. On this account we have endeavored to lead to the ear, air that is directly in contact with the illuminated... | |
 | American Association for the Advancement of Science - Science - 1881 - 476 pages
...the molecular disturbance produced by light is chiefly a surface action, and that the vibration has to be transmitted through the mass of the substance in order to affect the ear. On this account we have endeavored to lead to the ear, air that is directly in contact with the illuminated... | |
 | American Association for the Advancement of Science - Science - 1881 - 916 pages
...the molecular disturbance produced by light is chiefly a surface action, and that the vibration has to be transmitted through the mass of the substance in order to aflect the ear. On this account we have endeavored to lead to the ear, air that is directly in contact... | |
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