Yes.
A common alternative is coloured alcohol. But a thermometer can be made of many things. You can have one made of metal that you stick into a piece of meat that you have been cooking, to see if the temperature is hot enough inside for the meat to have been cooked.
There are also industrial theremometers that are used in furnaces. There are many ways to measure temperature.
Whatever it is made of, a thermo-meter measures thermos, [Greek for heat].
No, the external bulb of a thermometer is typically made of glass to hold the mercury inside. Mercury is usually contained within the glass bulb to measure temperature accurately without exposing the user to the toxic substance.
Yes
Using a thermometer we can measure the temperature.
Mercury in a Mercury thermometer is typically silver in color.
It could be used to do this - it is capable of doing it. However, Mercury is poisonous and a mercury thermometer is made out of fragile glass. Thus the danger that the thermometer would break releasing mercury into the milk (which would be for a person to drink) means that a mercury thermomiter is not the temperature sensor to use in this instance.
The first mercury thermometer was created by physicist Daniel Gabriel Fahrenheit in 1714. He used mercury because it expands and contracts very uniformly with changes in temperature.
Mercury does not touch the walls of a thermometer because it expands when heated, filling the space within the thermometer tube without coming into contact with the walls. This expansion is what allows mercury to accurately measure changes in temperature by rising and falling within the tube.
Yes, if a mercury thermometer breaks, the mercury can vaporize and be inhaled, which can be harmful to your health. It is important to handle and dispose of a broken mercury thermometer properly to avoid exposure to mercury.
Galileo invented an air thermometer in about 1600, but changes in atmospheric pressure made accurate measurement difficult. Liquids were quickly used instead and Gabriel Fahrenheit was the first to use alcohol (1709) and mercury (1714), in a thermometer.
You can't and shouldn't repair this. Mercury being poisonous, it is best recommended to discard the whole thermometer, without letting the mercury escape, very carefully. Maybe where you live they have a special place where such objects are destroyed safely.
A mercury thermometer is used to measure temperature.
A clinical thermometer will offer more precise calibrated readings than a mercury thermometer. The range of measurable temperature differs between a clinical and a mercury thermometer with the mercury thermometer having the wider range.