WebMay 17, 2024 · The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take reading. It prevents the thermometric substance (Mercury or Alcohol) from running back into the bulb. The fluid in the thermometer expands and contracts in response to ambient temperature. WebJan 31, 2024 · The constriction in the thermometer is to prevent the mercury from dropping back to the bulb when the reading is being taken. It is easier for us to take …
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WebIf it was a clinical thermometer, used for taking body temperatures, then the explanation is that they usually have a very narrow constriction between the bulb and the main tube, … WebJan 24, 2024 · 3.ans:Advantage of constriction in clinical thermometer: Prevents the immediate dropping of mercury thread back to the bulb on the removal of thermometer from the patient. 4.ans:As the freezing point of mercury is -38.8 degrees centigrade, it is not possible to measure temperatures below this value. So, the mercury thermometer is not … hillsborough county dog tag renewal
How does the constriction near the bulb in a clinical thermometer …
Web16 The diagram shows a clinical thermometer. mercury constriction bore glass tube Which factor affects the sensitivity of the thermometer? ... 17 A centimetre scale is fixed next to an unmarked mercury-in-glass thermometer. The ice point and the steam point are marked. 0123456789 1011 6.6 thermometer centimetre scale WebWhen the thermometer bulb is placed under the tongue or in the armpit to check the body temperature, the mercury expands until it reaches the maximum temperature of the body. The constriction does not allow the mercury from sliding back into the bulb after expansion. WebThe mercury-in-glass or mercury thermometer was invented by physicist Daniel Gabriel Fahrenheit in Amsterdam (1714). It consists of a bulb containing mercury attached to a glass tube of narrow diameter; the … hillsborough county docket