Table of Contents
- 1 What is most preferred thermometer fluid?
- 2 Which liquid is used in thermometer?
- 3 Why is mercury preferred to a thermometer?
- 4 What is the liquid in digital thermometer?
- 5 Which thermometer is better mercury or alcohol?
- 6 Why do thermometers use liquid instead of gas?
- 7 Why is Mercury preferred as a good thermometric liquid?
- 8 How is a thermometer used as a filler?
What is most preferred thermometer fluid?
Liquid in thermometers are suitable for narrow change of measurements. The most commonly used liquid is mercury. The range of mercury thermometer is 390C−3570C. Mercury does not wet the solid.
Which liquid is used in thermometer?
mercury
In a mercury thermometer, a glass tube is filled with mercury and a standard temperature scale is marked on the tube. With changes in temperature, the mercury expands and contracts, and the temperature can be read from the scale. Mercury thermometers can be used to determine body, liquid, and vapor temperature.
Why mercury or alcohol is used in thermometer?
There is a technical reason for using mercury in clinical thermometers. Mercury has a greater coefficient of thermal expansion than alcohol. This means a column of mercury will expand and rise more than a column of alcohol for the same temperature change. As a result, you can get finer readings with mercury.
Why are liquids commonly used in thermometers?
It is because the liquids like mercury and alcohol expand uniformly on increasing temperature and also contracts uniformly on decreasing the temperature. So, it gives us the accurate measure of the temperature. That’s why liquids are used in the thermometer not solids or gases.
Why is mercury preferred to a thermometer?
Mercury is the only metal that is in liquid state at room temperature. 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. Mercury has a boiling point which makes it suitable to measure higher temperatures.
What is the liquid in digital thermometer?
Mercury
Mercury is used because it remains liquid throughout various temperatures as opposed to water, which freezes in colder temperatures. Mercury thermometers are also designed to withstand boiling temperatures.
Which thermometric liquid is used in digital thermometer?
The liquid used in thermometer is called thermometric liquid. Mercury and alcohol are examples of thermometric liquid. Mercury is a thermometric liquid that remains in the liquid state in quite a wide range of temperature because it freezes at -39⁰C and boils at 357⁰C.
Which liquid is used in minimum thermometer?
The liquid used in minimum thermometer is alcohol in which a dumb-bell-shaped index is set.
Which thermometer is better mercury or alcohol?
It is more durable than alcohol thermometer because mercury does not evaporate easily. It is smaller in size as compared to alcohol one. Mercury does not wet the wall of the thermometer, which means that results can be highly accurate.
Why do thermometers use liquid instead of gas?
Liquids are used in thermometers because they expand and contract with temperature changes and they take on the shape of a container without filling it. Solids do not work in thermometers because they do not take on the shape of the container.
Can a liquid thermometer be used to measure temperature?
Mercury and other liquid thermometers cannot be used to measure temperatures in kelvins. Kelvin thermometers are usually electric devices that can record tiny variations in radiation. These variations would not be visible and may not change air pressure enough to raise the level of mercury in a liquid thermometer.
Why does a thermometer use alcohol and Mercury?
Thermometer is commonly made of a glass tube which is filled with liquids. The liquids are used as a thermometer filler, because the liquids undergo the change in volume if the temperature changes. Commonly, thermometers use alcohol and mercury to fill their tubes, because alcohol and mercury have superiorities compared with anothers.
Why is Mercury preferred as a good thermometric liquid?
Mercury being a liquid METAL inherently possesses a much higher thermal conductivity than any alcohol, meaning that it can retain heat and stay hot longer in a single phase.
How is a thermometer used as a filler?
Etymologically, the thermometeris a device used to measure the temperature appropiate and express it by a number. Thermometeris commonly made of a glass tube which is filled with liquids. The liquids are used as a thermometer filler, because the liquids undergo the change in volume if the temperature changes.