Thailand's low water solar terms

(1) Rotating motion:

1, direction, period, speed:

(1) direction: three directions (the north pole looks down at the earth, counterclockwise from west to east; Looking down at the earth at the South Pole, clockwise from west to east; Side view of the earth, from west to east around the earth axis. )

(2) Cycle: Two cycles (sidereal day and Solar Day).

Expand thinking: demonstrate the relationship between sidereal day and Sun Day in other three situations with a disc.

A. When the rotation direction is from east to west and the revolution direction is from west to east: sidereal day >; Solar Day (23 hours, 52 minutes and 8 seconds)

B. When the rotation direction is from west to east and the revolution direction is from east to west: sidereal day >; solar day

C. When the rotation direction is from east to west and the revolution direction is from east to west: sidereal day.