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Explain the working of ‘Six’s maximum and minimum thermometer’ with the help of a diagram.

Asked by Topperlearning User 24th April 2015, 12:59 PM
Answered by Expert
  • Six’s Maximum and Minimum thermometer is a U shaped parallel tube made up of glass. One side registers the maximum temperature and the other side records the minimum temperature.
  • The bend at the bottom of the thermometer contains mercury which moves up or down based on the expansion and contraction of alcohol.
  • When the temperature rises, the alcohol expands and pushes the mercury up the maximum column. This also pushes the mercury down in the minimum column.
  • Similarly, when the temperature falls, the alcohol contracts and pulls the mercury up in the minimum column resulting in a fall of mercury in the maximum column.
  • The steel indexes are located on the surface of mercury. They move along with the flow of mercury up and down.
  • When the temperature reaches its maximum and minimum limits, the metal indexes remain at that place. This helps in recording the maximum and minimum temperatures of the day.

Answered by Expert 24th April 2015, 2:59 PM
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