On 2008-07-31 23:35:50 +0100, geoff said:

In message , newshound
writes
The maths is really quite fun (this from the Wiki link)

http://www.algobeautytreb.com/trebmath35.pdf

as is the maths of the Roman cross-bow type catapult, which is also very
dependent on the properties of the sinew which they used for the springy
bits.

That's just plain anal ...

Oh I don't know. Have you ever been to Bluewater?