Podcast
Questions and Answers
What is the primary function of the bulb in a mercury thermometer?
What is the primary function of the bulb in a mercury thermometer?
What temperature range is a mercury thermometer typically safe for use?
What temperature range is a mercury thermometer typically safe for use?
Why is the air removed from the portion of the tube above the mercury?
Why is the air removed from the portion of the tube above the mercury?
What material fills the bulb and part of the capillary tube in a mercury thermometer?
What material fills the bulb and part of the capillary tube in a mercury thermometer?
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What characteristic of the capillary tube aids in the functioning of the mercury thermometer?
What characteristic of the capillary tube aids in the functioning of the mercury thermometer?
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Study Notes
Mercury Thermometer Design
- Comprises a thick-walled fine-bore glass capillary tube.
- Features a small thin bulb located at the lower end of the tube.
Mercury Usage
- The bulb and a section of the capillary tube contain pure, dry mercury.
- Mercury is selected for its ability to expand uniformly with temperature changes.
Construction Process
- Air is evacuated from the upper portion of the tube containing mercury.
- The upper end of the tube is sealed after evacuation to maintain a vacuum.
Temperature Range
- Suitable for measuring temperatures from 0°C to 100°C.
- Ideal for laboratory environments where precise temperature measurement is essential.
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Description
This quiz explores the design and usage of mercury thermometers, including their construction process and temperature range. It highlights why mercury is chosen for its properties and the importance of precise measurements in laboratory settings.
