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Sorry, bad math

Sorry, bad math

Posted Aug 2, 2009 4:40 UTC (Sun) by khim (subscriber, #9252)
In reply to: Very bad idea by sbergman27
Parent article: Google releases Neatx NX server

Why run a 40,000km cable when you could just run a 3 foot cable the opposite direction?

If you'll use 3 feet cable you'll be 20'000km from destination. You get 40'000km when two points are antipodes: it does not matter which way you'll go it's 20'000km one way and then 20'000km another way - direction is irrelevant. The only way to reduce distance is to burrow a hole and the depeest hole known to a man (less then 15km) does not shrink the distance all that much...


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Sorry, bad math

Posted Aug 6, 2009 16:32 UTC (Thu) by phanser (guest, #60087) [Link]

40000 km is earth circumference,
see http://en.wikipedia.org/wiki/Earth

Exactly!

Posted Aug 9, 2009 12:12 UTC (Sun) by khim (subscriber, #9252) [Link]

The device capable of burrowing straigh through Earth? I know few guys who'll pay BIG BUCKS for such thing - where are selleing it?

And if you are not selling then the only way to go to the antipode is along the Earth surface - so yes, 40'000km (give or take) is shortest path available...

Exactly!

Posted Aug 13, 2009 19:46 UTC (Thu) by hummassa (subscriber, #307) [Link]

Come, on, you are being thick. 40000km is the CIRCUMFERENCE of the earth, ie, the distance you walk if you wanna make a FULL circunavigation.

The distance between antipodes is half that - 20000km ALONG THE EARTH SURFACE. It would be ~12000km thru the center of the Earth.

Exactly!

Posted Aug 13, 2009 19:58 UTC (Thu) by johill (subscriber, #25196) [Link]

And if your two machines are at antipodes, then your latency is the round trip, which will be ~40Mm.


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