If an alcohol thermometer and a mercury thermometer have same two fixed points, namely the freezing and boiling point of water, their reading will not agree with each other except at the fixed points, as the linear 1 : 1 relationship of expansion between any two thermometric substances may not be guaranteed.
12.
In principle, thermometers made of different material ( e . g ., coloured alcohol thermometers ) might be expected to give different intermediate readings due to different expansion properties; in practice the substances used are chosen to have reasonably linear expansion characteristics as a function of true thermodynamic temperature, and so give similar results.
13.
:Mercury is also extremely opaque when compared to any other liquid . ( Alcohol thermometers require concentrated dye in order to make the alcohol column visible . ) Mercury also does not " wet " the inside of the glass capillary, so it doesn't leave an opaque film behind as it contracts with falling temperature .-- 67.183.217.169 01 : 26, 15 January 2007 ( UTC)
14.
This follows finds of a silver fork with the coat of arms of Fleuriot de Langle, a Louis d'or, Spanish and Russian coins, an alcohol thermometer, a ship's whistle, part of a bilge pump, an anchor, a cask of dragon, a crucifix, a human statue, ship's d�bris, a copper sieve, musket balls, an engraved domino, bottles, pitchers, goblets, trivial trade items and officers'medals and high collars.
