what is the science and technology behind the can opener?

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what is the science and technology behind the can opener?

2007-03-10 05:16:46 · 3 answers · asked by linifer74 1 in Science & Mathematics ➔ Chemistry

explain its uses and different types?
how is it developed?
what are its predecessors?
what makes this device work?
what are the scientific principles behind this technology?
what is the science behind this technology function?

2007-03-10 05:58:02 · update #1

3 answers

Ergonomic Physics.That's all...They are improving all the time though...Very helpful for elderly people.

2007-03-10 05:23:17 · answer #1 · answered by kit walker 6 · 0⤊ 0⤋

Necessity

2007-03-10 13:24:30 · answer #2 · answered by snvffy 7 · 0⤊ 0⤋

levers

2007-03-10 15:12:35 · answer #3 · answered by Sudewa 2 · 0⤊ 0⤋