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[Land-speed] British Steam effort 139.843mph

To: "land-speed" <land-speed@autox.team.net>
Subject: [Land-speed] British Steam effort 139.843mph
From: "Kirkwood" <saltfever@comcast.net>
Date: Wed, 2 Sep 2009 03:02:47 -0700
To get 1/1000 of any distance per hour, you have to be able to resolve time
to the 0.000277 seconds. However, fundamental metrology requires at least a
resolution of 1/10 to the right of the most significant digit to avoid
rounding errors. So timing resolution must be at  least 0.000027 seconds.
The Bonneville clocks are better than that and report 7 seven places to the
right of the decimal!

 

From: Malcolm Pittwood <mbp01@sky.com>

(snip . . . ) "The calcualtion of the average speed . . . . "  All to a
timed accuracy of 1/1000th of a second and then expressed to 1/1000th of a
mph or kilo per hour.
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