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when measure a very hot body with water inside the thermometer, the glass will break or the water will evaporate, similarly if we measure a cold body with the water again the water inside will freeze and we wont know thew correct measure
Wiki User
∙ 11y ago
Wiki User
∙ 14y ago1. Mercury is a metal but it is a liquid in a large range of temperature. 2. Because the variation of the thermal expansion of mercury with the temperature is near linear, mercury is a very suitable liquid for filling thermometers or other measuring instruments. 3. Thermometers with colored alcohol, gallium or gallium alloys, etc. are also known.
Wiki User
∙ 8y agoWell, mercury can't freeze or evaporate at the temperature recorded on a standard thermometer.
If water were used in a thermometer, we wouldn't be able to record any temperatures below its freezing point (0 degrees Celsius) or above its boiling point (100 degrees Celsius.
Mercury has many unique properties. It is a liquid metal and as a metal it expands when heated. When the mercury is heated it rises in the thermometer. And markings on the glass indicate the temperature.
Water does not do this.
But now in this Digital World mercury has been loosing its importance just because everyone wants to use Digital Technology which provide fast and accurate reading and also safe in use, no doubt mercury provides an accurate reading of temperature but it is not fast and safe as compared to Digital Thermometer.
Wiki User
∙ 12y agobecause it is better to measure
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What are precautions that are to taken while measuring the temperature in clinical thermometer?
the mercury should be at normal body temperature level before using it the thermometer should be cleaned after use with normal water the bulb of the thermometer should not be touched
Can you use a baby thermometer to test the temperature of water?
yes
What tool do you use to measure how hot water is?
A thermometer is used to measure the temperature of hot water.
Why would you use alcohol in an arctic thermometer?
Elemental mercury changes to solid-state at -38.8oC, so anything below that will not be recorded. Most places in the world, this isn't important, but at both poles temperatures can drop below this temperature, so for accurate temperature recording, a mercury thermometer is inappropriate. That said, if it's for your own personal use, the difference between -38 and -40 is irrelevant, it's just plain cold!
What is used to measure in degrees Celsius Fahrenheit or kelvin?
Electronic balance
What is Mercury thermometer use to measure?
A mercury thermometer is used to measure temperature.
How are thermometer made?
It generally made using fluid which expand or contract linearly with temperature such as mercury, water or alcohol. Electronic thermometer use the relation of thermal property effect electrical conduction difference to measure temperature.
What is the use of a mercury thermometer?
to check the temperature
Do farmers use mercury?
only in a thermometer
What liquid metal is use in the thermometer?
Mercury
Why should not use water in the thermometer?
One of the problems with water in a thermometer is the effect of capillary action - the column of water tends to "stick" to the sides of the thermometer and create a U-shaped surface at the top. This makes it very difficult to read the thermometer. Previously mercury was considered to be a good medium for thermometers, but this has been discontinued due to the health risks from a broken mercury thermometer; the current medium in thermometers is dyed ethanol or methanol.
What is liquid-in-glass thermometer?
what do they use for the liquid in glass ball thermometer
Why use mercury for a thermometer?
Because it does not freeze or evaporate
What do they use instead of mercury thermometer?
Medical spirit thermometers use a non-toxic alcohol, usually coloured red or blue to make it easier to see the level.
Why cant you use a mercury thermometer to measure the melting point of gold?
The thermometer would melt
Would you rather use alcohol or Mercury in a thermometer?
Alcohol. Mercury is very toxic.
Why do you use mercury in thermometer?
As tempertature rises, the mercury in the thermometer expands, causing it to go up. As temperature decreases, the mercury in the thermometer contracts, causing it to go down on the scale. However, mercury thermometers are very dangerous if it breakes and gets on your skin. so it it reccomended to use an electric thermometer. these thermometers use thermoelectric current to measure temperature. ergo. they are safe if they break cheers <3 -Eli
