Baloo55th Answer has 13 votes. Baloo55th 19 year member replies Answer has 13 votes. As satguru points out, the mercury drops as soon as the thermometer is taken out of the orifice whichever one! Temperatures of patients could be taken in situ, but this would entail bending down close to a probably already upset patient, and getting rather close to the orifice concerned.
Not a good idea Scientific thermometers are read in situ for simple lab processes, and rather more complex equipment is used where this is not practicable for safety reasons. Similar remote sensing would not be feasible for patient care - cost and size being two reasons.
As to 'high-low', to me they're 'max-min' and the ones I've come across don't have two thermometers, but instead one U shaped one with little steel pointers in each leg. Sensitivity: Small expansion of the liquid in the liquid bulb will cause a big change in the length of the liquid thread in the capillary tube as it is made narrow.
The narrower the bore, the higher the sensitivity. The constriction inhibits the fluid flow, giving the doctor time to get an accurate measurement. Originally Answered: Why is there a constriction in a thermometer? This only present in analog clinical thermometers, which are smaller and are used to take measurement of human body temperature.
The bulb in a thermometer is filled with mercury. When the bulb is heated, mercury in the bulb expands and rises up in the capillary tube. The height of the mercury gives the reading of temperature. Maximum and minimum thermometer is used to measure the maximum and minimum temperature of a particular place within 24 hours. It includes every relationship which established among the people.
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Don't have an account? When the doctor or whoever wants to look at it, they don't want it going down again while they're reading it.
The constriction stops this happening. This is why the thermometer has often to be shaken before taking the temperature - to get the mercury back into the bulb area. Ordinary thermometers don't need this sort of thing, because you read them where they are, not taken out and changing. When the doctor or whoever wants to look at it, they don 't want it going down again while they 're reading it.
Ordinary thermometers don 't need this sort of thing, because you read them where they are, not taken out and changing.
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