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机械手表里的机芯都是钢制的,如果手表放在磁铁附近,钢制机芯就会被磁化。特别是当手表里的游丝被磁化后,表马上就会停止不走。因此,机械手表需要防磁,即在手表外壳上罩上一种能防御磁力、使磁场透不过的物质。那么,究竟应该罩上一种什么物质呢?提出问题:什么物质可以阻断磁场?进行实验:如图1所示,把一磁铁固定在铁架台上,另外再把一根细线的一端系住一枚回形针,另一端系在一铁架台的底座上,回形针
Mechanical watch movement are steel, if the watch on the magnet near the steel movement will be magnetized. Especially when the gossamer in the watch is magnetized, the watch will stop immediately. Therefore, the mechanical watch need to be anti-magnetic, that is, in the watch case is covered with a kind of material that can prevent the magnetic field from permeating the magnetic field. So, what should be covered with a substance? Ask the question: What substances can block the magnetic field? Experiment: As shown in Figure 1, a magnet fixed to the iron platform, and then another end of a thin line Live a paper clip, the other end tied to the base of a Tiegui Taiwan, paper clips