The universe usually refers to five dimensions of space, i.e., lines, planes, time, and forces

To put it simply, the word "universe" is divided into two definitions: "universe" refers to the four directions, and "universe" refers to the period from ancient times to the present, which means that the world has existed until now!

Usually a four-dimensional space. X, Y, Z coordinates make up objects, but it takes time to change and evolve. So it's thinking, and of course there are no higher dimensions.

Three-dimensional space is length, width, and height, and time is four-dimensional space.

The expansion of the universe generally does not occur in three-dimensional space, but in four-dimensional space, which includes not only ordinary three-dimensional space (length, width, and height), but also the fourth dimension of space, time. It is very difficult to describe the expansion of four-dimensional space, but we may be able to explain it by extrapolating the expansion of the balloon.

The universe refers to space, the universe refers to time, and the universe is the general term for time, space, and empty matter.

a.That's right. b.Mistake.

Correct Answer: a

Whether the universe is a multidimensional space is still uncertain. What people can feel is a three-dimensional space, which is a time axis added to the structure of the space compared to the three axes of length, width and height of ordinary three-dimensional space, and this time axis is an imaginary value axis. There are now 11 dimensions of space as we know.

Now scientists believe that the entire universe is 11 dimensions, but human understanding can only understand 3 dimensions. The world we see with our own eyes Three-dimensional space is the space where the position of a point is determined by three coordinates. The objectively existing real space is three-dimensional space, with three measures: length, width, and height.

The concept of multi-dimensional space introduced in mathematics, physics and other disciplines is a scientific abstraction based on three-dimensional space. Moreover, modern physics believes that there are 7 dimensions that we cannot see.

The first three dimensions are the position, which exists in space;

The fourth dimension is velocity, which exists in time;

The fifth and sixth dimensions are velocity pointing, which exists in the (velocity) time direction;

The seventh and eighth dimensions are state directions, which exist in the spatial direction corresponding to their shapes;

The ninth dimension is the state corner, which exists in the roll corresponding to its shape;

The tenth dimension is the spin rate, which exists in the rolling time;

The eleventh and twelfth dimensions are the spin equatorial axis pointing and exist in the rolling (velocity) time direction;

The thirteenth is the spin equatorial axis pointing drift rate, which exists in the temporal direction of rolling change (acceleration rate);

The 15th and 5th dimensions are the direction of the spin equatorial axis pointing to the equatorial plane of the drift velocity, which exists in the time direction of rolling change (acceleration).

The sixteenth dimension is the acceleration rate (or force intensity), and the seventeenth and eighteenth dimensions are the acceleration (or force) direction, which is still a purely geometrical dimension, belonging to the category of multivariate geometry, that is, dimensionality, such a dimension is not only related to position (representing the position of a geometric point in space).

In the actual world of physical nature, the situation is much more complicated: the object of mental consciousness (logarithmic dimension) under investigation can be integrated into the world to form a perspective; It is also impossible to be completely free of size, and therefore possible to move in the magnification (exponential dimension) of the world: to form a zoom and zoom of the world; Even all systems can be particle-based, motion-based 、......Therefore, the dimensions of physics can also include temperature, density, velocity, 、......And so on and so forth.

Refer to the new multi-angle definition of multi-dimensional space, high-dimensional space, and 18-dimensional space for them.

Timeline, three-dimensional space, plus the infinite imagination of human beings.

The assumptions of the existing science about the universe are only assumptions in the space that we can imagine, and we cannot assume about the unimaginable space, so our existing scientific research and understanding of the universe is only a part of the universe.

However, human beings have a rare and valuable function, which is called dimension, and the following is the right to think and use human beings to understand the universe, to catch up with the universe from both the micro and macro aspects, to embrace the universe, so as to achieve complete consistency with the universe, this is the realm of "the unity of heaven and man", the realm of the truth of the universe, the realm of enlightenment, and the realm of human beings from the kingdom of necessity to the realm of "freedom".

It's so linear, it's unimaginable.

Different space from four-dimensional space-time.

Time belongs to the fourth dimension of the universe, and it is currently considered that the universe is "space + time", that is, three-dimensional space + one-dimensional time.

Because any matter in the universe is, is, and will be in different positions in space, and never repeats itself (including the Earth's revolution around the Sun), time is also one-dimensional (although the arrow of time has only one direction).

There is no dimension, one-dimensional, two-dimensional or three-dimensional, and time cannot be discarded to pile up, time is always counted, and space is small and there are gaps.