Solved cryptogram

Depositing a mole of silver by electrolysis needs one fixed quantity of electric charge.

Physics Facts, sourced to NIST.

Or go to the puzzle’s own page first.

What it means

Faraday worked this out before anyone believed in electrons. He noticed that the mass of metal plated out of a solution was strictly proportional to the charge pushed through it, which only makes sense if electricity itself comes in discrete parcels, one parcel per atom deposited. The constant that carries his name is simply the elementary charge multiplied by a mole.

The claim comes from NIST.

Nearby in the collection

The facts either side of this one.

  • NISTmedium, 75 letters
  • NISThard, 77 letters
  • NISThard, 74 letters
  • RSCmedium, 68 letters

About as hard as this one

Scored closest to it by the model behind our guide to solving cryptograms.

Every Physics Facts cryptogram · All fact collections

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