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看看iphone的屏幕有多硬
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看了一些资料以后，现在我开始担心我的iphone的屏幕了，看来毕竟不如我的Nokia砖头，就算是有了划痕也不伤大雅。iPhone怎么这么娇气，怪不得那么多形形色色的套套呢，我是不是也要搞一个了？
You are making the same mistake that many people make when they don’t understand the difference between hardness and toughness.
Example: Diamonds are the hardest natural substance we know. Which means they are very scratch resistant. Another diamond can scratch them, but nothing else. But because of the atomic structure of diamonds, it does make them hard, but that doesn’t mean they’re tough. Because the atoms line up in a specific way, if you hit them hard in one specific direction, they break quite easily. Which allowed people for centuries to cut them with a hammer and a chisel. You just had to know which direction to strick from.
请注意这里比较的是硬度，而不是坚硬度！ 也就是抗划（不一定抗冲击）
钻石的硬度等级是10，iphone的屏幕的硬度是9，仅次于钻石，这个材料一般使用于汽车火车的挡风玻璃的材料。
硬度是塑料的30倍。
The iPhone screen is as hard as sapphire. Which is 9 on the Mohs scale. Diamonds are 10 on the scale, or about 1500 times harder on a logarithmic scale. But even at 9, sapphire is very hard and difficult to scrath. Only synthetic moissanite at 9.5 and diamonds can scratch them.
But that says nothing about how tough the screen is. And obviously, struck in the right way can shatter it. But you could have the iPhone in your pocket with a set of keys, and they won’t scratch its screen. Synthetic sapphire is used in watch movements becuase it can be so small and so scratch resistant, but highly polished for a smooth bearing surface.
So there is no contradiction in Apple’s claims of hardness, even if they mistakenly said tough. Most people outside the gem industry don’t even know of this distinction between hardness and toughness. But when that Apple guy said that about the glass being like sapphire, he knew exactly what he was saying. |
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发表于 17-10-2010 23:48:40
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楼主
我也使这个问题，我于是设了两个时间，提前一小时醒一下！