This is a book that was introduced to me by Jeremy Stride, In my opinion everyone should have a copy it covers so much and I believe is integral to have in every ones library....If there was only a part two, but this may be just enough to get one through...
I've edited the link a bit for clarity
Thanx for this interesting book!
Les Brown's pyramid experiment
Les Brown's tetrahedron experiment
unfortunately, the link to PDF is down
Do you please have that book saved somewhere?