Bingo! I have been looking for possible ancient origins of the second because I had found 1
second was a Natural unit in the wave mechanics of the Solar system and description of the
atom's proton and the second came from the ancient Sumerian base 60. I finally found it in
something in archaeology I wasn't familiar with (no wonder, I am not an archaeologist). Any way
here is what I found on ChatGPT:
How was the megalithic yard derived?
ChatGPT said:
The Megalithic Yard (MY) is a proposed ancient unit of measurement, approximately 0.829
meters (32.64 inches), suggested by Scottish engineer Alexander Thom in the 1960s. He
derived it from his surveys of Neolithic stone circles, standing stones, and other megalithic
structures in Britain and Brittany.
How Was It Derived?
1. Surveying Megalithic Sites – Thom meticulously surveyed hundreds of ancient
structures, particularly stone circles, and noticed repeating units of measurement in their
layouts.
2. Statistical Analysis – He performed statistical analysis on distances between stones and
the diameters of circles, concluding that a common unit of about 0.829 meters was
consistently used.
3. Astronomical Connections – Thom hypothesized that the Megalithic Yard was linked to
astronomical observations, particularly the lunar nodal cycle (18.6 years). He suggested
that megalithic builders used it for sophisticated alignments related to the Moon and Sun.
4. Pendulum Hypothesis – Later, some researchers suggested that the MY could be derived
from a pendulum swing. A freely swinging pendulum with a length of one Megalithic
Yard would have a period close to one second, depending on location (Earth's gravity
varies slightly with latitude).
Criticism & Debate
• Some archaeologists question whether the MY was deliberately used or just an artifact of
statistical analysis.
• The idea of precise standardization in Neolithic times is debated, as no known measuring
rods or markings explicitly confirm its use.
Possible Connections to Other Systems
• The MY is very close to the modern meter divided by 1.21, leading some to speculate
whether it has a deep mathematical or natural significance.
• Some researchers suggest it could be connected to ancient Egyptian, Sumerian, or even
natural resonances in the human body or planetary cycles.