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A proof uses postulates and theorems to prove some statement.
About 40 proof
flow proof is just run of text 2 colmn has line/column breaks
A proof coin has a special shiny finish on it and it is made to be sold to collectors, and not used as money.
To show or demonstrate something is a more flexible concept; proof suggests a certain degree of intellectual rigor.
Showerproof beads water off but is not puddle-proof
Nothing, just two different abbreviations for Proof.
Tamper proof means it is not possible to tamper with something. Tamper evident relates to devices that reveal if something was tampered with.
Difference is Four Hundred and ninty.... proof 820-330=490
PF indicates a proof strike, which differs from a standard business strike.
Yes. Google Cauchy's proof.
Something that is rust resistant will not rust easily; minor exposure to water will not cause it to rust. Something that is rust proof will not rust.