酒精与汞温度计
温度计是用于测量温度的设备。它的温度敏感灯泡充满了液体。并且有一个量表显示了测得的温度。通常,温度以摄氏度或华氏度度进行测量。温度计具有狭窄的毛细管,该管与温度敏感的流体连接到灯泡。随着温度的升高,流体会膨胀并上升毛细管。随着温度的降低,流体合同并在毛细管中下降。沿毛细管的比例根据毛细管柱的高度显示相关温度。我们通过阅读弯月面所在的标记来找到温度。阅读可能与未经训练的眼睛有关。 When using thermometers, there are several precautions to minimize the errors. We should avoid the bulb exposing to unnecessary temperature extremes when taking readings. For example, if we want to measure the room temperature, thermometer should not be placed near a heater as it will give an error. Furthermore, the bulb should not be touched with our hands at any occasion. Thermometer should be stored inside a suitable casing when it is not used. There are different types of thermometers such as alcohol thermometer, mercury thermometer, infra red thermometer, recording thermometer, etc. Among these alcohol and mercury thermometers are commonly used for day to day measurement taking.
Alcohol Thermometer
酒精温度计将酒精用作液体来测量温度变化。酒精在较冷的温度下吸收温度和收缩时会膨胀。其中最常用的酒精是乙醇,但是可以根据测量的测量温度和环境使用不同类型的醇。可测量的温度范围会根据灯泡内部的使用流体而变化。例如,乙醇的沸点为80°C,冰点为-115°C。因此,在含有乙醇的酒精温度计中,可以测量-115°C至80°C的温度变化。酒精是一种无色的挥发性液体。染料用于颜色酒精(通常为红色染料),以便可以清楚地获得读数。由于性质的挥发性,灯泡内的流体很容易蒸发,或者可以使液体柱分离。为了获得准确的读数,必须避免这种情况。 The thermometer should be housed in a casing to protect it from temperature fluctuations.
Mercury Thermometer
银色水银液体的体积小sed inside the mercury thermometer. Mercury is a highly toxic liquid; therefore, it should be handled with care especially if the thermometer is broken. The freezing point of mercury is -38.83 °C and the boiling point is 357 °C. Therefore, mercury thermometers are best at measuring higher temperatures than the lower temperatures. Thus, this is widely used in laboratories to measure the temperature variations of chemical reactions.
酒精温度计和汞温度计有什么区别? ¶汞温度计作为温度敏感的液体在灯泡内有汞,在酒精温度计中,它是酒精。 ¤ Since alcohol is non toxic, alcohol thermometers are much safer to use than the mercury thermometers. ρ酒精温度计可用于测量非常低的温度。由于汞的沸点高于酒精,因此汞温度计可用于测量高温。 |
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好吧,感谢您的博客,因为现在我需要有关汞和酒精温度计之间差异的信息。非常感谢!谢谢…
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