David Beierl wrote: > Just a small consequence of the vast industrial and scientific effort that > has been put into making aluminum drink cans containing no aluminum -- > they're not there yet but already they've got it so that 3/4 of the > material is in the cap, and they keep shrinking the cap. What's really interesting is to compare an aluminum pop can to a juice can. The juice cans have to be much thicker because they don't have the pressure of the carbonated liquid inside to resist crushing during shipping. A friend of mine once described a modern pop can as being like an aluminum balloon, and that's not terribly far off. |
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