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Name:  Michael
Status:  other
Age:  20s
Location: N/A
Country: N/A
Date: 2000-2001

Why do very smooth sufaces stick together? such as mechinist gage blocks that are rung together.

When most molecules come close together, they tend to cling to each other. In most cases, there is not enough attraction to cause te surfaces to stick. When very smooth surfaces that match each other's shape come together, many molecules of one surface are very close to many molecules of the other surface. Many small attractions result. All these small molecular attractions result in a fairly strong total effect.


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