Michael Faraday thought it right that maybe there's like a thin coating of water on ice at all time. But, you know, back in the 1800s, Faraday had no way to prove this. And I think largely that's why his explanation went ignored. Until the 1980s, when scientists in Japan used x-ray imaging and saw it,. Like this little infinitesimally small skin of water on the surface of ice. The largest it gets is about six nanometers - one thousandth the size of a micrometer.