The Zhubov scale is a way of reporting polar sea ice coverage, it was developed in the former USSR by Russian naval officer N. N. Zhubov (1895 - 1960).
The Zhubov scale is measured using the unit ball, one ball equals 10% coverage, five balls 50% coverage and so on.
Famous quotes containing the word scale:
“I own I never really warmed
To the reformer or reformed.
And yet conversion has its place
Not halfway down the scale of grace.”
—Robert Frost (1874–1963)