How to read Maximum and Minimum temperature in Six's Maximum and Minimum Thermometer?


Six's maximum and the minimum thermometer is used for measuring the day's maximum and minimum temperature.

The maximum and minimum temperature in the Six's thermometer is recorded as follows.

Maximum temperature:

Due to a rise in the temperature during the day, the alcohol in the completely-filled bulb expands and exerts a pressure on the mercury.
The mercury moves toward the partly-filled bulb and pushes up the index in the capillary closer to the partly-filled bulb. Thus, the index closer to the partly-filled bulb records the maximum temperature. 
 
Minimum temperature:
Due to a fall in the temperature during the night, the alcohol in the completely-filled bulb contracts.
The mercury moves toward the completely-filled bulb and pushes up the index in the capillary closer to the completely-filled bulb. Thus, the index closer to the completely-filled bulb records the minimum temperature.

Updated on: 10-Oct-2022

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