Give examples of phenomena in life that embody the relationship between points, lines, and planes

For example, a straight fluorescent tube is a linear light source, and the luminous light source is a one-sided light source, which is called a surface light source; For example, a long-luminescent plate is a flood light source.

The luminous light source is a point, which is called a point light source; For example, a light bulb is a point light source, and the light source that emits light is a line, which is called a line light source.

On the other hand, the sun is a surface light source for the area on the ground and within the visible range of the human eye, while for the vast space, the sun is only a point light source.

Geometric meaning

in geometry. In topology and related branches of mathematics, a point in space is used to describe a particular kind of object in a given space, in which there are similarities such as volume, area, length, or other high-dimensional analogues. A point is a zero-dimensional object, and a point is the simplest geometric concept, usually as a geometric, physical, and vector figure.

and other areas of the most basic components.

Points form lines, lines form surfaces, and points are the most basic components of geometry. In the usual sense, points are treated as zero-dimensional objects, lines as one-dimensional objects, and faces as two-dimensional objects. The jog becomes a line, and the line moves into a surface.

As the name suggests, the luminous light source is a point, which is called a point light source; For example, a light bulb is a point light source.

The luminous light source is a line, which is called a line light source; For example, a straight fluorescent tube is a linear light source, and the luminous light source is a one-sided light source, which is called a surface light source; For example, a field luminescence plate is a surface light source.

In contrast, the sun is a surface light source for the area on the ground that is visible to the human eye.

And for Haohan space, the sun is just a point light source.

I think hand-knitted sweaters can best reflect this, now may not be seen, are completed by machines, when hand-knitting, each needle is a point, weaving a skewer is a line, countless skewers up to become a sweater, the process of supporting a point into a line, line into a surface, if you have experienced or seen it will definitely agree with my statement.

The place where you live is just one point, and then the place where you go to work will become a line,,, the circle of outside life will be a face.

Jog into a line, line into a surface, surface into a body. For example, if the tip of the pen is a point on the paper, the tip of the pen will form a line, and a flat surface can be seen when a rubber band is tightened and the hand is released to return to its original shape. A coin can be seen as a flat surface, and if it turns, it is the image of a sphere.

If two planes are parallel, the lines in one plane are parallel to the other. If a straight line is parallel to a plane, the intersection of the plane passing through the line and the known plane is parallel to the known line.

Other knowledge of points, lines, and surfaces.

If the line intersects two straight lines perpendicular to the polygon, the line is perpendicular to the polygon. If the line is perpendicular to a plane, then the plane that passes through the line is perpendicular to the plane. The two planes are perpendicular, and if the straight line of one plane is perpendicular to the intersecting straight line of the two planes, then the county is perpendicular to the plane.

If the line is perpendicular to the face, the line is perpendicular to all lines in the plane.

If two straight lines are perpendicular to a plane, the two straight lines are parallel. If two planes are perpendicular, their normal vectors are also perpendicular, and their inner product is 0. If the straight line is perpendicular to the plane, it is parallel to the unit normal vector of the plane. If two straight lines are parallel, then the two straight lines must be coplanar.

Jog into a line, line into a surface, surface into a body.

The jog becomes a line, and the line moves into a surface.

Composition of ordered points: This mainly refers to the shape and area, position or direction of the points, and other factors, arranged in a regular form, or the same repetition, or orderly gradients, etc.

The points are often arranged through sparse and dense arrangements to form the expression needs of the graphics in the space, and at the same time, the rich and orderly point composition will also produce a sense of space with delicate layers and form a three-dimensional.

In the composition, the relationship between the points forms the whole, and their arrangement is combined with the space of the whole, so the visual tendency of the points is the line and surface, which is the rational composition of the points.

Specifically, the points of the image can be expressed with various tools, and the points of different forms present different visual effects.

As its area increases, the sensation of the dot will also decrease. For example, when we look down at pedestrians on the street from high in the air, we have a sense of "point", and when we return to the ground, the feeling of "point" disappears.

In the picture space, on the one hand, the point has a strong centripetal nature, which can form the visual focus and the center of the picture, showing the positive side of the point; On the other hand, the dots can also make the picture space appear scattered and chaotic, showing the negativity of the dots, which is also a problem worth paying attention to in the specific application of dots.

Points also have the characteristics of explicit and recessive, and recessive points exist at the intersection of two lines, the top or end of the line, etc.

The jog becomes a line, and the line moves into a surface.

Dotting into a line: For example, when typing a dot matrix printer, a line is formed by dots, and a line is formed into a surface: for example, when a laser knife is operated on in the medical field, the knife edge formed by the laser passes through, and the surface moves into a body: for example, when we wipe the teeth, the toothpaste mouth is a round surface, and a cylinder is formed when the toothpaste is squeezed

1. The flashlight irradiates the ground, and the flashlight bulb is the light source, which embodies the point, emits the light, embodies the line, and illuminates the ground to leave the bright area and the surface.

2. When it rains, it rains at the beginning, and then the rain line, the heavy rain is surging, and the ground is potholed and waterlogged.

3. A student can be seen as a point as an individual, a small class can be seen as a surface, and several schools can be seen as a line.

1. As the name suggests, the luminous light source is a point, called a point light source; For example, a light bulb is a point light source, and the light source that emits light is a line, which is called a line light source. For example, a straight fluorescent tube is a linear light source, and the luminous light source is a one-sided light source, which is called a surface light source; For example, a field luminescent plate is a surface light source, and the sun is a surface light source in relation to the area on the ground that is visible to the human eye.

And for Haohan space, the sun is just a point light source.

2. I think hand-knitted sweaters can reflect this, now may not be seen, are completed by machines, when hand-knitting, each needle is a point, weaving a skewer is a line, countless skewers are built up to become a sweater, the process of supporting a point into a line, line into a surface.