Why water wet glass but not lotus leaf?

or:Why water wet glass but not lotus leaf?or:the angle of contact between water droplets is 90 so water does not wet the lotus leaf

or:Why water wet glass but not lotus leaf?

or:the angle of contact between water droplets is < 90 so water wets the glass but the angle of contact between water droplet and lotus leaf is > 90 so water does not wet the lotus leaf

Tags: