Megalithomania: GA according to Alexander Thom
The mathematics of GA (Geometro-Archeology)
following the Lord of the Rings,
Alexander Thom, Megalithic Sites of Britain, 1967.
Types of stone rings:
- Flattened circles, Type A
- Flattened circles, Type B
- Egg-shaped circles, Type I
- Egg-shaped circles, Type II
- Egg-shaped circles, Type III
- Ellipses
- Compound rings
According to Thom, Pythagorean triples are involved in the
constructions of egg-shaped rings, ellipses,
and compound rings.
(For an alternative, see Cowan.)
Here we will indicate the role of the P-triple
in the case of Woodhenge, an exemplary
egg-shaped circle of Type I.
References
- Alexander Thom, Megalithic Sites in Britain, 1967
- Ch. 4, p. 27, Mathematical Background
- This is the key to the revival of AA and GA
- Alexander Thom, Megalithic Lunar Observatories, 1971
- The sequel to the classic of 1967
- Keith Critchlow, Time Stands Still, 1979
- Wonderful presentation of megalithic math
- C.L.N. Ruggles, Records in Stone, 1988
- Ch. 5, The metrology and geometry of Megalithic Man,
by Alexander Thom and Archie Thom
- Ch. 16, The geometry of some megalithic rings,
by Ronald Curtis
- Ch. 17, Megalithic compound ring geometry,
by Thaddeus Cowan
- Ch. 19, Megalithic Callanish,
by Margaret Ponting
Ralph H. Abraham, 22 April 1996.