Why do you want to throw the thermometer? Where can you start measuring the thermometer?
People with life experience know that when we take our temperature, we must first swing the thermometer before we can use it until the scale inside the thermometer is below the thermometer scale before starting to measure it. Why do you do this? In addition, sometimes some people can’t get rid of the thermometer mercury. What should I do? Next, let’s take a look at why the thermometer is thrown and what to do if the thermometer cannot be thrown.
Why do you want to throw a thermometer?
The mercury thermometer needs to be thrown. Because mercury has a lower specific heat capacity and is sensitive to temperature changes, when designing a thermometer, if there is no external force, the mercury column can only rise but not fall (because the ambient temperature is usually lower than the body temperature). When using it again, the mercury column will drop back to its original position. If you don't throw it, you will not be able to measure your body temperature this time unless your body temperature is higher than the last measurement. When using it again, you must sweep downwards to allow the mercury to return to the glass bubbles so that the body temperature will be measured accurately.
Before using the thermometer, check whether the mercury inside can be connected into a gas &ldquo. If the temperature indicated is high, shake it and use the centrifugal force to make the mercury left outside return to the head as much as possible. When measuring the body temperature again, the mercury column can be connected into a whole. This is an operation method for accurately using the mercury thermometer. Why can't the thermometer be thrown?
1. It may be that the mercury column has been thrown below the scale, and you haven't noticed it yourself.
2. Generally, it is not easy to swing with your hands, and it is not correct. It causes an error in the body temperature measurement of the body temperature. You might as well use it to rub alcohol on the mercury ball and then throw it away.
3. If you still can't get rid of it, it means it's broken. Don't get rid of it. Maybe the thermometer is really broken and useless.
What should I do if the temperature of the thermometer cannot be shaken down?
When using a mercury thermometer, this may happen: the mercury thermometer cannot be shaken down. This does not happen often. If it appears, you can do this:
1. Wipe the end of the mercury column with alcohol, or soak the end of the mercury column with a small amount of alcohol, and wait 1— for 2 minutes, the mercury column will drop to its normal position.
2. Put it in ice water or alcohol, and the mercury will run down after a while.
It should be noted that when holding it, do not hold the thermometer body with your hands, it is best to hold the upper end of the glass side, so that there will be fewer errors in the measured body temperature. After use, the thermometer should return to the table to the mercury that has been lifted into the tube and return to the vacuum; if the mercury is not lowered back to the vacuum for a long time, the mercury may condense and will never be able to go back, and it will be broken. Where to turn the thermometer to start measuring body temperature, it is generally above 35 degrees Celsius when measured under tucking. Before measurement, the mercury column is indicated below 35 degrees. Even if the tucking measurement is used, the disconnected areas can be connected when the mercury expands, so the standard for throwing is generally below 35 degrees.
tips: The mercury thermometer has a shrinking port. The mercury liquid entering the number display area cannot return to the mercury gallbladder without the action of external forces. It does not mean that it needs to be thrown back below 35 degrees. As long as it is ensured to be lower than the actual temperature, it is enough to make the mercury thermometer use normally. If the actual body temperature is lower than the mercury display and the mercury is not thrown back, the mercury thermometer will fail. Assuming that the human body temperature is 38 degrees, just throw it to 38 degrees. If the human body temperature is 37 degrees and it can be thrown below 37 degrees. If it is 39 degrees, it can be thrown below 39 degrees. How to turn the thermometer on?
Hold the side opposite to the temperature measurement, that is, the side that is all glass. Don't turn it on. Then you can't get it back if you keep it for a hundred years. Then, wave your arms as you go, don’t use too much force, otherwise your arms will hurt and you can’t get rid of them. That’s the problem with the thermometer.
