As planets and worlds of the Earth

Geomagnetic

There is electricity in our land, called Ground electricity .
The reason for the north of the magnetic needle has not been found. The direction of the needle is changing daily, yearly, and every century.
The magnetic needle often swings around its axis every day, 8 o'clock East, 13 o'clock West.
The amplitude of the Sunday and the frequency of geomagnetic disturbances vary every year, and are closely linked to the activities of the sun.
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Tidal tides

The reason for the tides is that the gravitational force of the sun, coupled with the gravitational pull of the moon, is inflicted on the Earth's liquid coat.
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Such as. A point is attracted by the sun or the moon, and the sea water is sucked up.
C Point, because the earth is subject to greater attraction. Therefore, the seawater of c rises up relative to the crust.
Because of the decrease of gravity in both A and C, the sea water at B and D two falls.
With the rotation of the earth, every point should be in the position of A/B/C/D, so two times a day to see the tide and Ebb.

When the crescent moon, the full moon, the sun tide and solar tide occur simultaneously, the effect is superimposed.
When first quarter and last quarter, the tide of the lunar tide and the ebb tide of the solar tide reflect simultaneously, and the effect cancel each other. But the effect of the lunar tide is remarkable.
The tides change around the moon's apparent line.
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The friction caused by the viscosity of the water every day makes a part of the tidal mechanism turn into heat and may make the Earth warmer.

Lu Chao

The crust also has tidal changes.
Lu Chao makes the plumb line slightly different.
The ground level motion can be determined by measuring the local latitude and longitude.
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As planets and worlds of the Earth