Pats QoD 03/07/2025

開始者 SouthportPat
4 返信ies 5 いいねs 最終活動: 1年前
#4

Pats QoD 03/07/2025

Well done EdW first to get it right - of course it does not work everywhere - the Solent spring to mind but it is a good approximation
#3

Pats QoD 03/07/2025

The Rule of Twelfths applies to tidal changes which are not linear but follow a sine curve.
It states it changes by 1/12 in the first period, 2/12 in the second period and 3/12 in the third and fourth periods. The fifth period it reduces to 2/12 and in the sixth and final period it reduces again to 1/12.
This gives you a 1-2-3-3-2-1 giving you a total of 12.
🤔
Ed
がいいねしました SouthportPat
#1

Pats QoD 03/07/2025

Hi Shippers

Not had much time to prepare today been busy and only had the phone to access the internet.

But here we go:-

What is the rule of Twelfths all about and explain the theory behind it.


Good Luck


Pat
がいいねしました AlessandroSPQR

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