| Relation between spiral shape and central axis is relative
As described above, spiral is converted into sphere by degeneracy of circle that is central axis of spiral shape into a point. Relation between spiral and central axis will be reconsidered at this point.
If a man on central axis (circle) looks spiral while he moves, spiral
looks like it moves around him. (Fig.13)
A man’s position is changed. If a man on spiral looks central axis while he moves, he moves in a circle and central axis looks like it moves around him. (Fig.14)
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| When we recognize the world, we ourselves are always fixed point. We feel
like surroundings moves around us. When we walk, as we think “I am walking”,
we don’t feel surroundings move, but if we think ourselves is fixed, it
can be considered that surroundings moves in the opposite direction of
walking.
From the above, it will be understood,
“In recognition, subject is fixed point and object is movement point.”
From this principle, it will be understood that there is a case where
relationship between spiral and central axis is reversed
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