有时候,尤其是在冬天,我们会觉得流动的水温度比在容器中的水温更高。或许会以这样的形式为你所感知:当你准备洗头发的水,你把手放到水龙头下试水温,你觉得已经够热了,不过当你把头发泡进盆子里的时候才觉得水真是太冷了。然后你又把手放到盆子里试一下,水温似乎是降低了。 那么以下就这一现象做一简单说明,来看一下水温是否真的降低了。

Sometime, especially in winter, we find the temperature of flowing water is higher than the water in a container. You may notice the phenomenon like this, when you washing your hair, you think the temperature of flowing water is just perfect. But you then find it too cold after you had wetted your hair. So […]

Thermocouple is a thermograph which uses Seebeck effect to measure the temperature. When two different metal make up a surround, the temperature difference between two combining site will cause electric current . So we use measure this electic current and then canculate the temperature. This is just a simple example of thermocouple:

热电偶是一种基于塞贝克效应的测温仪器.当两种不同的金属组成回路时,若两金属结合点温度不同,回路中将产生电流.据电流大小来测温.以下就是其原理图: 其中1点和2点温度不同便会产生电流,基于此制作出热电偶.