The constriction prevents the Mercury from returning back to the bulb when the thermometer is removed from a particular body.
The mercury thread forces its way through the constriction, causing it to be trappedafter expanding. An accurate reading can still be obtained after it contracts because the constriction has trapped the mercury.
The constriction acts as a "valve" as ina vein to prevent the mercury from flowing back.
In case of ordinary thermometer if the thermometer is taken out the body whose temperature has been seen, the mercury would fall down as the bulb gets cooled. But in case of clinical thermometer even after the thermometer has been taken out of the mouth of the patient the level of mercury would be held at the same level though the bulb falls to the room temperature. So doctor could see the temperature liesurely. To bring back the mercury to lowest level we have to give jerks to the thermometer by shaking it.
to trap the mercury temporarily after expanding so it remains at the same position after taking it out of the substance to be measured. the constriction prevents the backflow of mercury
The constriction in the capillary tube does not allow the mercury to flow back into the bulb when the thermometer is taken out of the patient's mouth.
It stays at the maximum point so you get an accurate reading.
It stays at the maximum point so you get an accurate reading
Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
Because there is a constriction to prevent the indicator fluid falling to allow the maximum temperature to be read.
A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature. A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature.
what characteristic belongs to a clinical thermometer
a lab thermometer did not have a constriction as compared to clinical thermometer. it have a wide range of measurement and usually contains alcohol
It stays at the maximum point so you get an accurate reading
Quote: When the temperature falls, the column of mercury breaks at the constriction and cannot return to the bulb, thus remaining stationary in the tube. After reading the value, the thermometer must be reset by repeatedly swinging it sharply to shake the mercury back through the constriction. Unquote.
It stays at the maximum point so you get an accurate reading
Mercury does not fall or rise in a clinical thermometer when taken out from the mouth because of the KINK present in it.
constriction is one part of the thermometer that has like a hill
Because there is a constriction to prevent the indicator fluid falling to allow the maximum temperature to be read.
A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature. A clinical thermometer can only measure human body temperatures since it can measure no less than 35 degrees celcius and no more than 42 degrees celcius. An ordinary thermometer can measure and object or substance at any temperature.
measture a tempreture
what characteristic belongs to a clinical thermometer
So they can read the thermometer
Clinical Thermometer