alcohol thermometer การใช้

• The alcohol thermometer was the earliest, efficient, modern-style instrument of temperature measurement.
• Ethanol is a fuel, and due to its low freezing point, the active fluid in many alcohol thermometers.
• Another common option is an alcohol thermometer .-- Carnildo 21 : 39, 15 January 2007 ( UTC)
• The alcohol thermometer being used was retrieved and sent to the Bureau of Standards in Washington, D . C . to confirm the temperature.
• Mercury thermometers are still occasionally used in the medical field because they are more accurate than alcohol thermometers, though both are being replaced by electronic thermometers.
• Mercury thermometers are still occasionally used in the medical field because they are more accurate than alcohol thermometers, though both are commonly being replaced by electronic thermometers and less commonly by galinstan thermometers.
• Other sources, including the Encyclop鎑ia Britannica, credit German scientist Daniel Gabriel Fahrenheit with inventing the alcohol thermometer in 1709 . Fahrenheit was a skilled glassblower and his alcohol thermometer was the world's first reliable thermometer.
• Other sources, including the Encyclop鎑ia Britannica, credit German scientist Daniel Gabriel Fahrenheit with inventing the alcohol thermometer in 1709 . Fahrenheit was a skilled glassblower and his alcohol thermometer was the world's first reliable thermometer.
• If an alcohol thermometer utilizes a combination of ethyl alcohol, toluene, and pentane, its lower temperature range may be extended to measure temperatures down to as low as  " 200 癈 (-328 癋 ).
• Before the discovery of the true thermodynamic temperature, the thermometer " defined " the temperature; thermometers made with different materials would define different temperature scales ( a coloured alcohol thermometer would give a slightly different reading than a mercury thermometer at, say half-scale ).
• 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.
• 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.
• :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)