Jules Verne Forum

<jvf@Gilead.org.il>

JanFebMarAprMayJunJulAugSepOctNovDec 19961997199819992000200120022003200420052006200720082009201020112012

Re: Oh, no, not the league debate again!

From: Rick Walter <rick1walter~at~comcast.net>
Date: Mon, 30 Apr 2012 09:16:39 -0600
To: "Jules Verne Forum" <jvf~at~gilead.org.il>

>it is fair to assume that he would [be] working on land miles rather than sea miles.

True. But, again, Verne tended to work with the 4-kilometre league. He rarely used the "3-mile" Wikopedia variety that we're familiar with today.

By this token, Verne's "9,000 leagues per hour," when multiplied by 2.48 statute miles (the close equivalent of 4 kilometres), converts to an escape velocity of 22,320 mph. Meaning that Verne is in the ballpark.

Best,

Rick

Frederick Paul Walter
Albuquerque, New Mexico

  ----- Original Message -----
  From: Harry Hayfield
  To: Jules Verne Forum
  Sent: Monday, April 30, 2012 12:12 AM
  Subject: Oh, no, not the league debate again!


  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 - 18:16:48 IDT

JV.Gilead.org.il
Copyright © Zvi Har’El
$Date: 2012/05/01 04:55:01 $$