This is a novel.
I have a friend who is interested in philosophy. When it comes to looking at things, he likes to quote the poem "Looking horizontally, a ridge becomes a peak."
Today, he came to me and told me about his experience:
When he said "Looking at the side, it becomes a ridge and the side becomes a peak", Gang Jing took out a ball. A friend of
asked me if I could help make an animation to show that a ball is not a ball when viewed from different angles?
I felt very funny and said: "The great philosopher still worries about this kind of thing? Is such a small problem still used for animation?"
He asked in confusion: "What should I do?"
"We don't live in this world every day A ball? Do we see a ball? We see a flat surface.
"Haha!" The friend left with satisfaction.
He was satisfied, but he left me with a question. The brain seems to have inertia. After thinking about a problem, it cannot stop immediately and will slide forward for a while.
As it glided along, I thought about the horizon. In the vast grassland or the calm sea, the horizon we can see is not a straight line, but an arc.
So, is this arc a circular arc?
I found a photo of the earth taken from space. The horizon looks like an arc. However, this is just my feeling and there is no strict proof. Is it possible that
is not an arc or an elliptical arc, but some other curve?