How to read water temperature in degrees
In daily life, mastering the measurement method of water temperature is crucial for scenes such as making tea, swimming, and infant care. This article will combine the hot topics and hot content on the Internet in the past 10 days to give you a detailed introduction to water temperature measurement methods, tools, and water temperature standards in common scenarios.
1. Water temperature measurement tools and methods
There are various tools for measuring water temperature. Here are some common tools and how to use them:
| Tool name | How to use | Applicable scenarios |
|---|---|---|
| thermometer | Immerse the thermometer probe in the water and wait for the value to stabilize before reading | laboratory, home, medical |
| Infrared thermometer | Aim at the water surface or the outer wall of the container for measurement, no contact required | industrial, kitchen |
| Smart water cup | Built-in sensor automatically displays water temperature | daily drinking water |
2. Water temperature standards in different scenarios
The water temperature directly affects the use effect. The following are water temperature recommendations for common scenarios:
| scene | Recommended water temperature | Things to note |
|---|---|---|
| Make tea | Green tea: 75-85℃; black tea: 90-95℃ | Water temperature that is too high will destroy the taste of tea leaves |
| baby bath | 37-40℃ | Use your elbow to test to avoid burns |
| swimming pool | 26-28℃ (adults); 30-32℃ (children) | Too low can easily lead to cramps, too high can lead to fatigue. |
| drink warm water | 40-50℃ | Overheating can damage the esophageal mucosa |
3. Tips on how to judge water temperature
In the absence of professional tools, you can roughly judge the water temperature through the following methods:
1.hand test: Quickly immerse the back of your hand in water. If it feels slightly hot but not hot, the water temperature is about 40-45℃; if you need to withdraw your hand immediately, the water temperature exceeds 50℃.
2.Steam observation method: After the water is boiled, the amount of steam will gradually decrease. When the steam is significantly reduced, the water temperature is about 80-90°C.
3.bubble observation method: During the heating process, small bubbles (about 60℃), large bubbles (about 80℃), and violent rolling (boiling at 100℃) occur.
4. Recent hot topics related to water temperature
1."Can you drink water overnight?" has once again sparked discussion: Experts point out that if the water temperature drops to room temperature and is stored in a sealed container, it can be drunk within 24 hours, but repeated heating will accelerate mineral precipitation.
2.Smart thermostatic cup becomes new favorite: E-commerce data shows that sales of smart cups that can display and maintain 55°C have increased by 200% year-on-year, and are especially popular with mothers and office workers.
3.Hot spring safety guide attracts attention: An Internet celebrity fainted after soaking in a 42°C hot spring for a long time. The doctor reminded: Each soak should not exceed 15 minutes, and you need to replenish water in time.
5. Common misunderstandings in water temperature measurement
| Misunderstanding | Correct understanding |
|---|---|
| The feel of the hand can accurately determine the temperature | Individual differences are large, and the error can reach ±10℃ |
| All thermometers are suitable for measuring water temperature | Ordinary thermometers only have a maximum temperature of 42°C, so a special water thermometer is required. |
| The higher the water temperature, the better the sterilization effect | Most bacteria can be inactivated above 70℃, and items may be damaged at 100℃ |
Conclusion
Accurately measuring water temperature is both science and life wisdom. It is recommended that families keep a food-grade water thermometer and master basic judgment methods. Be sure to use professional tools for special scenarios (such as baby care) to avoid safety hazards caused by improper water temperature. With the development of science and technology, more intelligent temperature measurement equipment will make water temperature management more convenient and accurate.
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