Not just a property of liquid but of all matter. All matter expands when heated and contracts when cooled, in thermometers the liquid, usually an alcohol, expands when heated lengthening the little line.
The liquid metal in many thermometer is mercury (Hg).
Mercury is used in clinical thermometers.
A thermometer is used to measure temperature by the movement of a substance called mercury inside a sealed tube
The alcohol or mercury in a thermometer expands or contracts very precisely according to heat or cold.
If the clinical thermometer is a mercury based thermometer, it needs to be shaken down prior to each use. This is because there is a pinch point between the mercury reservoir bulb and the capillary tube, to ensure that the mercury does not shrink back into the bulb after the temperature has been taken. The mercury has therefore to be shaken back into the bulb before another measurement can be made. One should note that in many countries use of mercury based clinical thermometers is now discouraged (because mercury is toxic) and electronic thermometers are used in stead - these do not need shaking.
These are materials used in thermometer whoses property varies with temperature
Thermometric liquid is a liquid used in thermometers to measure temperature changes. Common examples include mercury and colored alcohol, which expand or contract in response to temperature variations, allowing for precise readings. The choice of thermometric liquid depends on the temperature range and the desired accuracy of the thermometer. Mercury is often used for high-temperature measurements, while alcohol is favored for lower temperatures due to its lower freezing point.
Ah, a thermometric substance is simply a material that is used to measure temperature. It's like a friend that helps us understand how hot or cold things are. Just like how different colors can bring a painting to life, different substances can help us understand temperature better. So, embrace the thermometric substances in your life and let them guide you towards a better understanding of the world around you.
In a mercury thermometer, the mercury expands when it is heated, causing it to rise in the thermometer's narrow tube. This increase in volume is a physical property of mercury known as thermal expansion. The height of the mercury column in the thermometer is then used to measure the temperature.
Thermometric substances are materials that are sensitive to changes in temperature and can be used to measure it. Examples include mercury, alcohol, and liquid crystal.
A mercury thermometer is used to measure temperature.
The red liquid in a liquid-in-glass thermometer is mineral spirits or ethanol alcohol mixed with red dye. A grey or silver liquid inside the thermometer is mercury. Mercury thermometers are not used anymore due to the dangers associated with mercury.
Mercury and alcohol
Mercury rises in a thermometer when the temperature increases because mercury expands as it heats up. This expansion of the mercury column inside the thermometer is used to measure the temperature of the surrounding environment.
A mercury thermometer can go down to -30 deg C
mercury
toxic poison