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These days, Mercury is considered too risky to use in thermometers (due to the risk of them breaking and contaminating people). Alternate techniques are used today in clinical thermometer, including electronic thermometers and ones based on liquid crystals that aren't as harmful should they leak out and even contactless infrared thermometers.
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Mercury was used in clinical thermometers due to:
- Its high thermal expansion (25 °C) 60.4 µm·m−1·K−1
- Linearity in thermal expansion
- Sensitivity to rise in temperature
Mercury is used in clinical thermometers because it expands and contracts uniformly with changes in temperature, providing accurate measurements. It also has a high boiling point, making it suitable for measuring body temperature. However, due to its toxic nature, there is a shift towards using safer alternatives like digital thermometers.
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What is the mercury called on a clinical thermometer?
The liquid in a clinical thermometer is called mercury. It is used to measure body temperature by expanding and rising within the thermometer.
Why does the mercury not fall or rise in a clinical thermometer when taken out of the mouth?
Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
Why does a clinical thermometer have a kink?
The kink in a clinical thermometer prevents the mercury from falling back down when the thermometer is removed from the body. It ensures that the highest temperature reached is recorded until it is reset.
Why care must be taken when disposing of a mercury-in-glass thermometer?
A mercury-in-glass thermometer contains toxic mercury that can harm the environment and human health if not disposed of properly. Mercury can contaminate water sources and soil, so it should be treated as hazardous waste and taken to a designated collection facility for safe disposal. Accidental breakage can release mercury vapors, which are poisonous when inhaled, making careful handling important to prevent exposure.
Why is kink provided in a clinical thermometer?
The kink in a clinical thermometer prevents the column of mercury from falling back down when the thermometer is removed from the patient's body, allowing for an accurate temperature reading to be taken and read.
Which metal is used in clinical thermometer?
Mercury is used in clinical thermometers.
What is the mercury called on a clinical thermometer?
The liquid in a clinical thermometer is called mercury. It is used to measure body temperature by expanding and rising within the thermometer.
Who element used of the glass tube of clinical thermometer to measure thermometer?
mercury
Mention any two points of difference between a clinical thermometer and an ordinary mercury thermometer?
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.
Which element is used in the glass tube of a clinical thermometer to measure temperature?
mercury
Which element is used in the glass tube of clinical thermometer to measure tepperature?
MERCURY
Where will you find Mercury?
Mercury can be found in the labarotry or in the clinical thermometer.
What liquid is found in a clinical thermometer?
The liquid in a clinical thermometer is often mercury. But there are thermometers that use a coloured alcohol.
Why is the clinical thermometer shorter than the mercury thermometer?
Mercury expand more easily.so it need large space
Why does the mercury not fall or rise in a clinical thermometer when taken out of the mouth?
Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
What is the similarity between a clinical and laboratory thermometer?
both of them contain mercury and both are used to check temperature.
What is the most used thermometer?
Clinical Thermometer
