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a c d e g j l m n s 3
  • Alignments - A name special to Carnac’s three successive groups of parallel rows of stones, starting above Carnac called Le Menec, Kermario, and Kerlescan and another found near Erdevan.
  • AMY - A megalithic yard which, in inches, expresses the true astronomical ratio of mean solar months to lunar months.
  • azimuth - the standard angular measurement of angles on the horizon, measured clockwise from zero degrees true North.
  • canevas - A technique of geometrical knowledge expressed within multiple square grids, noted and named by Schwaller de Lubicz in Pharaonic art and temple building.
  • Carnac - An extensive megalithic complex in southern Brittany, western France, predating the British megalithic.
  • chronon - The average excess of the day over the sidereal day, of 4 minutes, 1/365th of the Earth’s rotation, to catch up the sun.
  • circumpolar observatory - A geometrical arrangement suited to the tracking the motion of circumpolar stars, around the north pole, during the night.
  • Clava - A type of circular Bronze Age cairn, with a circular chamber, named after the group of three at Balnuaran of Clava, east of Inverness in Scotland. 
  • cromlech - Breton word for a rounded kerb monument or stone circle.
  • cubit - 3/2 feet of any sort, such as 12/7 Royal feet of 8/7 feet, and sometimes, a double foot.
  • Day-inch counting - The practice of counting the days, using inches or other small units, between synodic phenomena such as years or planetary loops.
  • dolmen - A chamber made of vertical megaliths upon which a roof or ceiling slab was balanced.
  • eclipse year - the time taken (346.62 days) for the sun to again sit on the same lunar node, which is when an eclipse can happen.
  • English foot - The standard prehistoric foot (of 12 inches) representing a unity from which all other foot measures came to be formed, as rational fractions of the foot, a fact hidden within our historical metrology [Neal, 2000].
  • geodetic - Units of measures and monumental measurements relating to the numerical definition of the shape of the Earth by the late megalithic.
  • gnomon - ancient Greek: gnomon means “indicator,” “one who discerns,” or “that which reveals.”
  • Just intonation - A musical tuning system improving the Pythagorean system of tuning by fifths (3/2), by introducing thirds (5/4 and 6/5) to obtain multiple scales.
  • Lunation Triangle - The right-angled triangle within which the lengths of the two longer sides are the relative proportions of the solar and lunar years.
  • megalithic yard - A unit of length around 2.7 to 2.73 feet long
  • Metonic - Greek: The continuous 19 year recurrence of the moon’s phase and location amongst the stars.
  • Metrology - The application of units of length to problems of measurement, design, comparison or calculation.
  • Nodal period - Usually referring to the backwards motion of the lunar orbit’s nodes over 6800 days (18.618 years), leading to eclipse cycles like the Saros.
  • Saros - The dominant eclipse period of 223 lunar months after which a near identical lunar or solar eclipse will occur.
  • Saturn synod - The 378 days between two retrograde loops of Saturn, equal to 54 seven-day weeks
  • superparticular - a ratio in which the numerator is one greater than the denominator.
  • Synodic - The recurring time cycle of a given celestial phenomenon seen from the Earth.
  • 3-4-5 - The side lengths of the “first” Pythagorean triangle, special because the side lengths are successive small primes and, at Carnac, defined the solsticial extremes of the sun.