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Why is a clinical thermometer usually shaken after use?
Well, a clinical thermometer is shook after use so that the mercury comes back to its initial point i.e. where it had been before the temperature was taken.
Why is there a need for us to shake the clinical thermometer prior to each use?
If the clinical thermometer is a mercury based thermometer, it needs to be shaken down prior to each use. This is because there is a pinch point between the mercury reservoir bulb and the capillary tube, to ensure that the mercury does not shrink back into the bulb after the temperature has been taken. The mercury has therefore to be shaken back into the bulb before another measurement can be made. One should note that in many countries use of mercury based clinical thermometers is now discouraged (because mercury is toxic) and electronic thermometers are used in stead - these do not need shaking.
Why is thermometer usually shakes before using?
It isn't necessary with new electronic thermometers, but if you still have an old hold-under-your-tongue-for-three-minutes mercury thermometer, the mercury will remain at the last recorded temperature until it is shaken back into the reservoir.
Why do you have to shake the clinical thermometer after reading but do not have to shake the laboratory thermometer?
Shaking the clinical thermometer after reading helps ensure that there is no residual mercury left on the scale, providing an accurate reading for the next use. Laboratory thermometers are typically designed differently and don't contain mercury, which is why they do not require shaking after reading.
Why there is kink in clinical thermometer?
In a normal clinical thermometer, the mercury moves up and down the capillary tube as the temperature changes and thus if you removed it from contact with the patient the reading would steadily fall as it cooed. As you need a clinical thermometer to give you a reading of the patients temperature even after it has been removed from the patient, you need to stop the mercury shrinking back into the reservoir. The 'kink' breaks the connection between the mercury in the capillary tube and the reservoir so the reading given is accurate. On the other hand before it can be used again the mercury in the capillary tube has to be vigorously shaken back into the reservoir.On a point of interest, clinical thermometers are getting very rare because they have been phased out due to concerns regarding mercury poisoning should they break in use.
Does the stain need to be shaken before use?
Yes, the stain should be shaken before use to ensure proper consistency and even application.
Why clinical thermometer is jerked before using it again?
If you have an old thermometer that has mercury, then the shaking makes all of the mercury flow to the bottom of the thermometer. Then, you can get a better reading. The current digital ones work differently. Thermometers used for taking people temperatures are a special kind that go up with heat but don't go down with cold. So you have to shake a thermometer before taking your temperature to make the reading go down below your own temperature. Then the thermometer can go up again to read your temperature.
What percussion instrument is shaken usually in pairs?
The maracas.
Why doesn't the mercury on a medical thermometer go down when it's removed from the body?
The mercury on a medical thermometer does not go down when removed from the body because the mercury expands to a certain level when it comes in contact with body heat, and even after it's removed, it does not contract back immediately. The thermometer needs to be shaken or reset for the mercury to go back down to its starting point.
Why does the mercury fall or rise in a clinical thermometer when it is taken out of the mouth?
A clinical thermometer measures the max temp of the human body due to the expansion of the mercury in the bulb, which flows past a kink in the column and rises in the graduated stem, to read the highest body-temp. Once it is removed from the body, the mercury stays at that level, and does not fall because it cannot flow back into the bulb -- the kink prevents the back flow. It has to be shaken vigorously, as you know, for us to get the mercury back; then it is ready to take the temp again.. Also, the temp cannot rise further on its own from the max reading because the mercury does not expand the moment the thermometer is taken out of the body. Incidentally, temp can be measured under the armpits and in the rectum also.
Why does temperature in a thermometer go up faster when shaken?
When a thermometer is shaken, the mercury inside it gains kinetic energy, causing its particles to move faster and spread out more. This makes the mercury rise in temperature more quickly as it absorbs heat energy from the surroundings.
What is the past participle of the word shake?
The past participle of "shake" is "shaken." For example, "I have shaken the bottle before opening it."
