Roy Smith wrote: > Steven D'Aprano <[EMAIL PROTECTED]> wrote: > >>High and low tides aren't caused by the moon. > > They're not???
Probably he's referring to something like this, from Wikipedia, which emphasizes that while tides are caused primarily by the moon, the height of the high and low tides involves the sun as well: "The height of the high and low tides (relative to mean sea level) also varies. Around new and full Moon, the tidal forces due to the Sun reinforce those of the Moon, due to the syzygy found at those times - both the Sun and the Moon are 'pulling the water in the same direction.'" (If I'm right about this, then the statement is still wrong, since even without the sun there would be high and low tides, just not of the magnitude we have now.) -Peter -- http://mail.python.org/mailman/listinfo/python-list
