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Physics
Classical Physics
Electromagnetism
Electromagnetism and injury -- physical contact at the molecular level....
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[QUOTE="deskswirl, post: 5517461, member: 394251"] Sorry for not responding sooner... The knife cutting is a physical process resulting in little change in the atomic or molecular constituents of either the blade or the skin. The number of protons.neutrons/electrons is (nearly) irrelevant because the electrons shield the positively charged nucleus from coming in contact with another + nucleus. The electrons will merely deform their orbital structures as another atom is pushed closely. If you were to surround the entire skin/knife volume with an imaginary balloon you would measure little to know effective charge because they are both nearly neutral. I say nearly irrelevant because a slight imbalance of charge is responsible for the bonding of both the Fe atoms in the steel and the O,H,C and P of the skin through ionic and covalent bonding. What you are describing is an electrochemical process which might only happen if the knife was charged up significantly relative to the skin. This is a common practice in dermatology as it automatically cauterizes the exposed would (electric scalpel :nb)). [/QUOTE]
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Classical Physics
Electromagnetism
Electromagnetism and injury -- physical contact at the molecular level....
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