Thermometers, which we all know without explanation, are instruments that measure temperature. Whether in industrial production or in scientific experiments, thermometers are a very common and important instrument. In our families, the human body thermometer is also necessary, a must at home. There is a mind fever to take out a measurement is very convenient! Therefore, it is particularly important to master the correct use of thermometers. Here, I’ll introduce you to the specific method it!
Thermometer is commonly used in people’s daily lives, so how should the different thermometers look?
Methods introduced.
1, hand holding the upper end of the thermometer, so that you can avoid the temperature of the hand affect the expansion and contraction of the liquid in the table. Ensure that the thermometer’s glass bubble is fully immersed in the liquid being measured, taking care not to touch the bottom of the container or the container wall. If the glass bubble of the thermometer touches the bottom or wall of the container, the temperature of the water will not be measured. So the resulting reading is not accurate.
2, the thermometer glass bubble immersed in the measured liquid to wait a while, wait for the thermometer readings after stabilization. If you do not wait for the liquid column in the temperature table to stop lifting on the reading, the reading is not the real temperature of the water.
3, when reading the thermometer glass bubble to continue to stay in the liquid, reading out of the water surface, then the reading is not the real temperature of the water, the line of sight to be level with the upper surface of the liquid column in the thermometer. Otherwise, it will make the reading is high or low.
