Why is a small narrow constriction (kink) provided in the glass tube near the bulb of a traditional clinical…
Why is a small narrow constriction (kink) provided in the glass tube near the bulb of a traditional clinical thermometer?
- To slow down the rising speed of mercury
- To stop mercury from falling back automatically into the bulb before reading
- To make the thermometer unbreakable
- To magnify the mercury column for easier reading
Solution
The kink prevents the expanded mercury from immediately dropping back into the bulb when removed from the patient's mouth, allowing accurate reading.
Asked in: Homi Bhabha Practice
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