資料來源 : Webster's Revised Unabridged Dictionary (1913)

Nobili's rings \No"bi*li's rings\ [After Leopoldo Nobili, an
   Italian physicist who first described them in 1826.]
   (Physics)
   Colored rings formed upon a metal plate by the electrolytic
   disposition of copper, lead peroxide, etc. They may be
   produced by touching with a pointed zinc rod a silver plate
   on which is a solution of copper sulphate.