Gap Fill - Paragraph Two


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   ability      case      chip      engineering      material      metallurgists      powerful      shave      variety      view  

Paragraph 2

The researchers used microscopes to find out how hair damages a razor blade. They got a close-up of what happens during a when the blade cuts a hair. The blade gets damaged in a of ways. One way is that a single hair creates a tiny on the edge of a blade. This chip becomes bigger as it cuts more hair. After more shaving, the blade loses its to cut cleanly and becomes blunt. A researcher said: "We are and want to...make better metals. In this , it was intriguing that if you cut something very soft, like human hair, with something very hard, like steel, the hard would fail." He said his team is "aiming to solve an important problem".

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