人们经常提到，托马斯•爱迪生发明了电灯泡，而历史学家罗伯特•弗里德尔和保罗•伊斯里尔提到了至少22种更早的类似发明。爱迪生的发明版本能够从中胜出是由于一些关键的细节，包括找到了一种有效的发白热光的材料，灯泡内能够达到较高程度的真空和高电阻。

Paper Clip (1867)

According to the Early Office Museum, the first patent for a bent wire paper clip was awarded in the United States to Samuel B. Fay, in 1867. Despite the early patent, Fay's design never really took off; instead the Gem paper clip, which was never patented, took off in Great Britain. It's still the design we use today, producing 18 billion in the US alone.

回形针(1867年)

根据早期办公室博物馆的资料，能弯曲的金属丝回形针的专利最早出现在1867年的美国，发明者是塞缪尔•B•非伊。但尽管他很早就申请了专利，他的设计却从没流传下来。真正流传下来的是从未注册过专利的宝石牌回形针，在英国打开了市场。我们今天使用的回形针仍然是这一样式，仅在美国一国每年的产量就达180亿枚。

Compass (1117)

Before the compass, getting lost was more or less a guarantee. The discovery of Magnetic North allowed man to explore the world. The first incontestable evidence for the use of a compass as a navigational device appeared in Chinese records in 1117. Early compasses were typically constructed by floating magnetized needles in bowls of water.

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