A Submarine Thermometer.
PubMed · 1843
Z7 Submarine Thermometer.-This is a French invention of the celebrated Mons.Clement, which has been tried lately in England in presence of the Lords of the Admiralty, on board the Lightning (steam vessel) Lieutenant Commander G. Snell.In relation to this new invention, we find the following in a late London paper.It appears from the thermometrical observations of many scientific navigators, that in seas of unfathomable depth the water is not so cold as over the banks, and that over banks near the shore it is less cold than over those at a greater dis tance, but colder than in the sea.In experiments which have been made on the coast of France with this submarine ther mometer results have been obtained which fully establish the great service which this instrument may render to navigation, by furnishing a sure and constant indication of all sudden changes from deep to shallow water.It is evident also that it will serve to point out the proximity of vessels to icebergs which at certain seasons of the year render the navigation of the Atlantic attended with danger.This test could not, of course, be made in the experiments with the Lightning, but the other important qualities are correctly ascertained.Clem