[Footnote 71: The moon. The tides are caused by the attraction of the moon and the sun. The attraction of the moon for the water nearest the moon is somewhat greater than the attraction of the earth's center. This causes a slight bulging of the water toward the moon and a consequent high tide.]
Σημείο: ¶525 Άδεια: Public domain · Πηγή Το κείμενο δίνεται όπως στην έκδοση, χωρίς αλλαγές.