Aberrations of Audibility of Fog Signals: A Paper Read Before the Philosophical Society of Washington, October 22, 1881 |
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½ mile aberrations in audition Aberrations of Audibility assume atmosphere Barometer Beaver Tail fog-signal Beaver Tail Point British Light-House Establishment Changed course Direction of Wind Distance from Lit Dumpling Light expect to hear fails to hear faint murmur force Fort Adams full operation Galatea half a mile hear a fog-signal hear the fog-signal hear the signal heard and lost heard faintly Henry on Sound inaudibility Intensity of sound investigation Island in statute July 11 July 15 land fog signal last station Light-House Board Light-House steamer Little Gull Island Little Gull Light Little Gull siren Long Island Sound lost the sound mariner mencing mile from last miles distant Morgan's Point Light Narragansett Nautical Miles Newport Number Observations at Little phenomena Plum Island Prof right angles running siren's trumpet sound in scale sound signals statute miles steam Tail Fog Thermometer tion tle Gull Island twenty miles Tyndall vation Wet Bulb Wind August windward ΙΟ