• ulterno@programming.devEnglish
      0·
      6 days ago

      etalon
      /ˈɛtəlɒn/
      noun Physics
      noun: etalon; plural noun: etalons

      a device consisting of two reflecting glass plates, employed for measuring small differences in the wavelength of light using the interference it produces.

      I don’t see how that word makes sense in that phrase