hint; it was used in the civil war.
2006-08-01 11:27:13 · 4 answers · asked by lusaisthebest 3 in Education & Reference ➔ Trivia
Foghorns are a navigation aid for mariners (Like Lighthouses) .In FOGGY conditions, visual navigation aids such as lighthouses are obscured by the weather,
Then these FOGHORNS ARE PUT INTO SERVICE.
These Foghorns produce an audible warning of rocks, headlands, or other dangers to shipping.
The first automated steam-powered foghorn was invented by Robert Foulis of Saint John, New Brunswick, Canada.
Till then, BELLS (Less Effective) had been used.
The noise produced by a foghorn is very deep, & loud so that ships can heed its warning from a considerable distance away.
All foghorns use a vibrating column of air / diaphones to create an audible tone, distinctive & deep & penetrating. They sound like sirens.
Source:
Wikipedia
2006-08-01 12:51:52 · answer #1 · answered by Anonymous · 1⤊ 0⤋
The first automated steam-powered fog horn was invented by Robert Foulis of Saint John, New Brunswick, Canada.
The first model was installed on Partridge Island in 1859, replacing the less effective bell and cannon which had been formerly used as warnings to ships in fog.
2006-08-01 17:22:39 · answer #2 · answered by myllur 4 · 0⤊ 0⤋
I am not sure, but I found this which says that the first automated steam-powered fog horn was invented by Robert Foulis of Saint John, New Brunswick, Canada. The first model was installed on Partridge Island in 1859.
I wonder if this is right. hmm...
2006-08-01 11:35:13 · answer #3 · answered by carebears0408 4 · 0⤊ 0⤋
Beats me....
2006-08-01 11:47:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋