4.5 Discrepancy between the increase of the day length and the distance increase earth- moon
By means of historical
documentations
concerning sun eclipses can be univocally proved the day length has,
during
the past 2500 years, increased by an average 1.7 millisecond per
year [38]. This value is also in accordance with the results from
microscopical
studies on 400 million years old coral fossils [39]. According to this,
the day length must have increased by approx. 2 hours since, which,
when
calculated for 100 years, also equals approx. 1.7 ms.
It was also measured that the
distance
earth - moon increases by 3.7 cm per year [38].
Both effects are attributed to tide
influences between earth and moon.
The problem with this is, the
measurements
are not in agreement with the theory. A distance increase of 3.7 cm per
year would theoretically equal an increase of the day length of 2.3 ms,
instead of 1.7 ms per year [38].
This discrepancy disappears if we
take those effects into account that come along with the gravitation
constant
(G ~ t - 2/3 ), which decreases with
time.
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