New Zealand ADSL Mailing List


Re: Anyone noticing general performance degradation lately

From: Lennon - Orcon <lennon_at_orcon.net.nz>
Date: Mon, 11 Apr 2005 01:08:12 +1200
Message-ID: <004101c53dce$5b4b5c70$0100000a@lennons>

> Working out the speed of light it can go in this time (speed of light =
> 299792458 ms-1) (meters second to the power of -1) (ms-1(speed) * s(time)
> = m (distance))

Using correct speed thru fibre = ~1.9 x 10 ^ 8 ms-1 (instead of 3 * 10^8ms-1
via vacuum)
so..

NZ->US = 11780km (62ms * 1.9 x 10 ^ 8 ms-1)
NZ->AU = 2280km (12ms * 1.9 x 10 ^ 8 ms-1)

Actual Distance (estimated)
NZ(AK)->US(CA) 10517km
NZ(AK)->AU(SY) 2157km

So yes working out with the right speed of light thru fibre latency is
caused by the speed of light which makes more sence :-)

Thanks
Craig

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Received on Mon Apr 11 01:08:07 2005

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