Doesn t light propagate need a medium? My doubts

It seems that the statement that the ocean of negative energy ideas is what Dirac said when he derived the relativistic wave equation with spin, but it should be noted that the relativistic wave equation is theoretically not self-consistent, and the truly self-consistent theory is quantum field theory. In the view of quantum field theory, the vacuum is the ground state of the field, and the appearance of particles is the excited state of the field, and the so-called ocean filled with negative energy electrons is just a metaphorical statement, not that the vacuum is really full of negative energy electrons.

Light propagation does not require any medium, because light is an electromagnetic wave, from the particle point of view, photons, as a substance, like all other particles, of course, do not need any medium to propagate.

Yes, light has wave-particle duality, particles need a medium for propagation, and there is no absolute vacuum, there is matter in all space.

No, because light is a wave that does not propagate with the help of external objects.

Einstein's theory of relativity doesn't need a medium because it's a special electromagnetic wave.

When it comes to quantum perspectives.

I can't tell you the specifics, I don't know, hehe.

No, electromagnetic waves!

My point is yes! We think that light is a kind of electromagnetic wave, but this medium is just a medium that we can't see with the naked eye! In fact, it exists, friends, you can do it yourself!

I think you have your own opinion, don't you? Believe in yourself! You are the best!

No, because light is an electromagnetic wave.

Light propagates by itself, just like a spacecraft in a cosmic vacuum.

No, because there is light in the universe.

Need. The propagation of light in a vacuum is not visible.

There is no vacuum in the universe, but there are various particles.

Light is an electromagnetic wave and is also a photon.

No medium is required.

I think light propagates with the help of a medium. It's just that we can't see it with the naked eye, and there is not a vacuum in the universe, but there are all kinds of particles.

ldwcy right.

Dirac: That's just a metaphor.

I agree that light travels through a medium. It's just that we can't necessarily see it with the naked eye.

Light is both a particle and a wave, and it does not need a medium to propagate in hail, so it can propagate in space.

Light travels in a straight line (in a homogeneous medium), but when the light meets another medium (homogeneous medium), the direction changes, and it still travels in a straight line. Whereas, in a non-homogeneous medium, light generally travels in a curve. The propagation path of the above light can be determined by Fermat's principle.

The brightness of the light is brighter, the less obvious it can be seen, when the brightness of the light is darker, the light from the luminaire to the illumination reference object will expand, the farther the distance, the greater the diffusion, from the initial shape to the disappearance, and when the luminous body is zero distance from the illumination reference, the shape of the light is the real shape and size of the luminaire, so the direction of light propagation is related to the brightness of the light and the distance between the light and the illumination reference.

A medium is required for the propagation of light.

Propagation of light: 1. Light propagates in a straight line, but when the light encounters another medium (homogeneous medium), the direction will change, and it will still propagate in a straight line after the change. Whereas, in a non-homogeneous medium, light generally travels in a curve.

2. The propagation path of the light of the pant can be determined by Fermat's principle. Light travels in all directions, and the brighter the light, the less noticeable it is.

3. When the brightness of the light is dim, the light from the luminous object to the illumination reference object will expand, and the farther the distance, the greater the diffusion, from the initial shape to the disappearance.

4. When the luminous body is at zero distance from the illumination reference object, the shape of the light is the real shape and size of the luminaire, so the direction of light propagation is related to the brightness of the light and the distance between the light and the illumination reference object.

The law of light propagation:

1. Light propagates in a straight line in the same homogeneous medium. Aperture imaging, solar and lunar eclipses, and shadow formation all testify to this fact.

2. Putting aside the wave nature of light, the discipline that studies the propagation of light in the medium and the imaging law of objects based on the linear propagation of light is called geometric optics. In geometric optics, the direction of light propagation is represented by a line with an arrow pointing point, which is called light.

3. Geometric optics regards an object as a combination of countless object points (in the case of approximation, object points can also be used to represent objects), and the beam emitted by the object point is regarded as a collection of countless geometric rays, and the direction of the light represents the direction of light energy transmission.

4. The independent propagation law of light: The two beams of light do not interfere with each other when they meet each other in the propagation process, and continue to propagate according to their respective paths, when the two beams of light converge at the same point, the light energy at the point is simply added.

The light travels in a straight line (in a homogeneous medium), but when the light encounters another medium (homogeneous medium), the direction will change, and the edge will still propagate in a straight line after the change.

The propagation path of the above light is determined by Fermat's principle. When the brightness of the light is darker, the light from the luminaire to the illumination reference will expand, and the greater the diffusion, from the initial shape to the disappearance.

When the luminaire is at zero distance from the illumination reference, the shape of the light is the true shape and size of the luminaire, so the direction of light propagation is related to the brightness of the light and the distance of the illumination reference.

No, you don't. Light leaves the object and travels in the integrated field of the space around the object, and the propagation of light is determined only by the electric field (i.e., the etheric field), which is the propagation medium, that is, the direction and density of the electric field, as well as the speed of motion of the electric field.

On the earth, regardless of whether the static light source or the moving light source, the light emitted first propagates in the earth's space field, and in the process of light from other stars such as the sun propagating to the earth, the stellar light leaves the star first in the stellar field, then enters the galaxy space comprehensive field, and finally enters the earth's space field. Therefore, it will affect the propagation of Zen Hu light.

Therefore, the propagation medium of light is a comprehensive field formed by the interaction between the fields of various objects in space and the relative motion of objects. To put it simply, the propagation medium of light is the field of objects that move with the object.

The propagation of light does not require a medium, which in turn affects the propagation of light.

The speed of light is related to the medium, the propagation speed of light in different media is different, the propagation speed of light in vacuum is the maximum, and the speed of light in vacuum or air is taken as c=3 108m s. The velocity of light in water is about 3 4 in a vacuum;The velocity of light in glass is about 2 3 in a vacuum.

The propagation of light does not require a medium like sound, light travels fastest in a vacuum, but sound cannot propagate in a vacuum. Light travels in an inhomogeneous medium not in a straight line, as in the case of a mirage.