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Oh, no, not the league debate again!

From: Harry Hayfield <harryhayfield~at~gmail.com>
Date: Mon, 30 Apr 2012 06:12:34 +0000
To: "Jules Verne Forum" <jvf~at~gilead.org.il>

Wikipedia kindly points out that the escape velocity of Earth is 11,200
m/s (or to put it another way 25,200mph). Using the same source, it
states that a league is three miles, however the confusion arises from
that fact that on land it's three miles (8,400 leagues per hour escape
velocity), but once you get onto the sea it becomes three nautical miles (which is about 252 m longer than a land mile, and
therefore changes the escape velocity to 7,257 leagues per hour escape
velocity). Given that the figure mentioned is 150 leagues per minute
(which comes to 9,000 leagues per hour), it is fair to assume that he
would working on land miles rather than sea miles.
Received on Mon 30 Apr 2012 - 09:12:43 IDT

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