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Today we're going to talk about dimensions.
you never think that the universe we live in is actually a multidimensional universe.
but unfortunately humans are only three-dimensional creatures.
So in our understanding, the world is presented in three dimensions -- a world that can only measure entities in length, width, and height.
in the three-dimensional world, there are only three vertical lines x, y, z in one space, while in four-dimensional space, there are four lines that can be perpendicular to each other x, y, z, t.
and in the eyes of four-dimensional or even higher-dimensional organisms, in addition to long, wide, and high, time may also be figurative.
as described in Interstellar Crossing, time may be a mountain for them to climb down.
in the physical four-dimensional time and air, time is the fourth dimension except for length, width, and height.
and in the four-dimensional space of mathematics, the fourth dimension is unknown, probably time, or not.
the entities of any dimension are likely to be observed by us, so what happens to us when we (three-dimensional organisms) see a four-dimensional object? First, let's understand the dimensions.
a point because there is no direction, no size, so it is zero-dimensional.
but if space has two points at the same time, then they have a fixed point, from point A to point B is a distance (that is, length).
length as a dimension makes the line a one-dimensional object.
two lines determine a face, at which point the face not only has the length, but also the width, all of which are two-dimensional.
but whether on one surface, is painting individual or painting, it is only in the plane, no thickness, once given the thickness, it becomes three-dimensional.
length, width, thickness, make up the three-dimensional world we are in.
in the artist M.CEscher's painting, two-dimensional lizards are trying to become three-dimensional entities, escaping the picture so far, from zero-dimensional to three-dimensional worlds, and we are well understood because high-dimensional organisms can observe the low-dimensional world in a comprehensive and complete way.
humans can't even look at objects of the same dimension in a space, which is why we can't see what's behind the walls.
but the next four dimensions may be a bit abstract.
so when a four-dimensional object is presented before our eyes, no matter how we look at it, the understanding of it can only be three-dimensional, if you want to visually and comprehensively see it, even through two-dimensional images.
and if we want to see each face, every corner, each point, we can only change its angle, that is, we can only see a portion of this high-latitude object at a time.
imagine how living things in the two-dimensional world see three-dimensional world objects may be helpful in understanding.
suppose a paper man wants to see what the sphere of the human world looks like, what is the picture in its eyes? Of course it is the cross-section of the sphere.
3D objects are just a cross-section in the eyes of two-dimensional organisms.
paper man through the cross-sectional display method to see the sphere, will be a from short to short long, and then from the long to short line paper man through the cross-sectional display method to see the sphere, will be a line from short to long, and then from long to short.
right, at this time, it is not poverty, but dimensions that limit our imagination.
in a four-dimensional space vector, the fourth dimension (which is possible to do anything that we cannot measure at the moment, you say is a consciousness is not impossible) is unknown, so a four-dimensional object, even one face, is displayed before our eyes, and is still very abstract.
, however, if we assume the fourth dimension as the time we are familiar with, that is, the physical four-dimensional space-time, it would be better to observe.
, we see a person's stillness as an object in a three-dimensional world.
that plus the fourth vector of time, it becomes a four-dimensional creature, it is gradually presented, we see four-dimensional budding sister will be like this.
of course, when we want to see it from God's point of view, or even imagine what this ever-changing four-dimensional sister-in-law looks like in a still state.
Can you imagine an individual being 3 years old and 70? What kind of ghost does it look like? emmmm, is it a blank brain? Who am I, where am I, what am I doing, suddenly philosophy? In the vast universe, human beings are so small that there are many phenomena that we have no way to explain them or even imagine them.
maybe the whole galaxy, but it's just a piece of the alien's hand... But that doesn't mean the unknown doesn't exist, don't forget that we still have science and technology, through which we are getting closer to the unknown.
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