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Insert F, page 3.
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| f.3 |
f.1 Action d and magnetism: introduction.
f.2 One system at a time.
f.3 Magnetic declination.
f.4 Comparing the farmer's cycle with that of the ocean tides.
f.5 Two time references: normal and magnetic.
f.6 Sun wind and ocean tides.
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A natural clock. |
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| .1 |
Both the seeds and the ocean tides seem to follow a natural clock, determined by the local magnetic fields.
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| .2 |
Indeed, it would be the local magnetic field which would regulate the local cycles, in other terms, the times when the configurational reactions, in the molecules considered, either may take place, or are more likely to do that. Among those local cycles, the main ones, such as the “water cycle”, and the “fats' cycle”, both of which may have either a diurnal, or semidiurnal cadence. Moreover, a minor local cycle: the “time windows”.
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| .3 |
Another example is the effect of the magnetic declination, which would determine the phenomena considered to take place either early, or late.
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When the magnetic declination is different from zero. |
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| .4 |
The cotidal lines - the lines drawn on a chart and representing high waters that occur at the same time - appear to be bent as a function of the magnetic declination that varies from one place to another one.
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| .5 |
In places (of the northern hemisphere) the more the magnetic declination is negative (when the angle measured is west), the more the tides come early; the more the magnetic declination is positive (when the angle measured is east), the more the tides are late.
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| .6 |
The effect of the magnetic declination on the times of the tides is easily seen in tide basins located not far from one geographic pole, and where the magnetic declination varies substantially over a short distance.
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Example.
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| .7 |
A clear example is found in the north east basin of the Pacific Ocean (see maps below). The magnetic declination is east everywhere in the basin, reaching the highest values in the north-east part of it, where the tides show to be late with respect to what occurs in the rest of the basin.
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| .8 |
The delay increases near the coast, as the thrust fronts get transfomed into components of a tide wave, much slower.
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| .9 |
In the map above the red lines stand for the high water wave at the passage of the Moon on the meridian (0), six hours later (6) and nine hours later (9) (the tide moves counterclockwise because the area is in the northern magnetic hemisphere).
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