You know how your fingers wrinkle up in the bath? The outer layer of your skin absorbs water and swells up, forming ridges — but quickly returns to its old state when dry. Physicists have shown just why skin has this remarkable ability.
You know how your fingers wrinkle up in the bath? The outer layer of your skin absorbs water and swells up, forming ridges — but quickly returns to its old state when dry. Physicists have shown just why skin has this remarkable ability.