Mercury Used In Thermometers Because Of Its
Mercury thermometers are used in households laboratory experiments and industrial applications.
Mercury used in thermometers because of its. It is very reflective so it s easy to see and to read accurately. These new mercury thallium thermometers can now measure temperatures as low as 62ᵒc. Household uses of mercury thermometers. The volume of mercury in the tube is much less than the volume in the bulb.
Mercury is a neurotoxin and if you are exposed to it outside of its typical glass thermometer tube it can cause you to go deaf experience tremors memory loss and partial blindness among other awful permanent side effects. It is used in thermometers because it has a high coefficient of expansion which makes it easy to move in the thermometers as per the temperatures. The barometer was invented by evangelista torricelli in 1643 and the thermometer by gabriel fahrenheit in the year 1714. Common household uses of mercury thermometers include fever thermometers and oven candy and meat thermometers.
The small change in volume drives the narrow mercury column. The volume of mercury changes slightly with temperature. Liquid in glass thermometers are the cheapest kind of thermometer and are also easy to use. Mercury thermometers are reasonably priced durable and perfect.
It consists of a bulb containing mercury attached to a glass tube of narrow diameter. The most peculiar characteristics about these measuring instruments were that both used mercury as the liquid because of its less linear expansivity. Mercury boils at 357 c so it can therefore be used to measure higher temperatures. They will always be associated with a childhood memory for many as a magical liquid inside a glass bottle that helped us make sure that we took a day off from school.
Mercury has a boiling point which makes it suitable to measure higher temperatures. Department of psychology. One can also extend its freezing point by alloying it with thallium. Mercury is used in thermometers because of its special properties.
The increase of mercury is steady or linear to the changes of the heat except for actual high temperature. The mercury in glass or mercury thermometer was invented by physicist daniel gabriel fahrenheit in amsterdam 1714. Mercury thermometers were an integral part of every household across the globe for several decades until the new digital and laser thermometers came in. Mercury thermometers can be used to determine body liquid and vapor temperature.
It is widely used in the construction of barometers and thermometers. Mercury is the only metal that is in liquid state at room temperature. Mercury is easily the best liquid to use for 5 important reasons. Still despite their small flaws mercury thermometers are regarded to be one of the most accurate thermometers available.
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