How does a mercury themometer work?

Answer 1

A Mercury barometer works by expanding and therefore raising the Mercury of the barometer, then reading the level up to which the mercury has gone.

Answer 2

it is sensitive to weather so it expands with heat and contracts with cold and so when it expands in a thermometer the only way is to go up thus meassuing the temperature this way. The exact amount of mercury is aplied to it's glass container.

Answer 3

It is sensitive to weather so it expands with heat and contracts with cold and so when it expands in a thermometer the only way is to go up thus measuring the temperature this way. The exact amount of mercury is applied to its glass container.

Answer 4

Temperature affects the amount the mercury is spread out. Heat causes most liquids to expand, which is how a thermometer works. As heat around the glass protecting the mercury of the thermometer rises, the mercury expands and covers more room in the thermometer.

Answer 5

It is based on the expansion of mercury, a liquid metal. Mercury is filled in a small

glass bulb, above which extends a small capillary of uniform cross section. The

entire thing is enclosed in a firmer exterior case also made of glass. When mercury

expands (due to the application of heat to the bulb) it raises into the capillary. By

properly calibrating the glass stem into intervals based on the uniform expansion

of mercury per degree centigrade or Fahrenheit, one can find the temperature of a

body or an object when the mercury bulb is brought into close contact. There is a

constriction - a small kink in the capillary (at least in clinical thermometers) so that

the mercury column stays at the expanded level in the capillary long after it is

taken off the body or object. The mercury column breaks at the constriction when

removed from the source of heat. This lets the observer read the temperature

leisurely without fear of the mercury column returning to the bulb reservoir. One

thing to remember is to shake the thermometer vigorously so that the mercury is

forced past the constriction and into the bulb before taking a fresh reading. Bring

the mercury level as close to the bulb as possible before attempting a new

reading.

Answer 6

A Mercury barometer works by expanding and therefore raising the mercury of the barometer, then reading the level up to which the mercury has gone.