Megalithic Lunar Observatories
This unique text discusses the mathematical principles behind Megalithic stone circles, and how these were used for observing lunar cycles in prehistoric times. The author, A. Thom, shows that stone circles were precisely planned and laid out in accordance with certain geometric figures in the classic Pythagorean tradition. Containing some mathematical and astronomical details, along with notes on site survey and location, this book is ideal for amateur enthusiasts and academicians of archaeology, astronomy, and mathematics.
accuracy accurate alignment anomalistic months apparent altitude arc minutes assumed azimuth backsights Ballochroy Beinn Bellanoch Hill cairn Caithness calculated calendar Callanish Cara Island Castle Rigg celestial sphere centre Chapter circle correction decl declination maximum Dirlot distance Draconic month Earth eclipse equator equinox error extrapolation length fallen menhir feet foresight Fowlis Wester geometrical give given grid ground group Q horizon interval Jura Kintraw Kintyre large menhir limits Loch lower limb lunar observatories lunar sites lunation major standstill maxima mean value measured Megalithic meridian method Mid Clyth miles Moon setting movement Mull node notch observations observer's obtained Ordnance Survey orientated oscillation parallax Peninver perhaps perigee perturbation possible radius refraction sector seen semidiameter setting point shown in Fig shows sight lines slabs solstice stake positions stone rows Table temperature Temple Wood theodolite Thom Thorn triangle upper limb