Entering from the gate, there is a wide foyer surrounded by stone walls. After entering, the gate automatically closes.
He Xing was walking forward, telling others what he saw.
He Xing said: "There are still some passages and gates here."
The sound came from the left. Xiang Yu was surprised to find that He Xin's figure was still where he was.
Xiang Yu said: "Where are you now?"
He Xing said: "Near this gate."
Xiang Yu said, "But I saw you were still near the entrance."
He Xin said: "Then I will stand here and you wait a little longer."
After a while, Xiang Yu saw He Xin walking near the gate.
Because Xiang Yu barely moved after coming in, He Xin saw that Xiang Yu was still at the door of the foyer.
They walked around the foyer to try it out and discovered that sound traveled faster than light. You can even see yourself walking behind you. The images seemed to be temporarily suspended.
Instantaneous said: "What's going on? Can the images here be paused, stored, and re-projected into the eyes?"
Xiang Yu said: "Are you talking about stereoscopic projection? I think it looks like it. We are in the middle of a huge image projection. We are inside this big TV, and the playback speed is slower than the actual shooting speed."
He Xing said: "If it is compared to a big TV, we shoot first. One hour later, what we see in front of the TV is the content shot in the previous hour. The difference is that we are now in front of the TV internal."
"Is there any other explanation?" Shunfen said, "Is the speed of light slowing down here?"
He Xin said: "This explanation also makes sense, it should be."
Instantaneous said: "Will this happen again?"
Xiang Yu said: "I have seen information on this before."
The slowing down of the speed of light may be due to the slow light effect, which is an abnormal physical phenomenon that exists in high dispersion devices and media. The study of the slowing down of the speed of light can not only deepen people's understanding of the nature of the interaction between light and matter, but also And it is conducive to the discovery of new physical phenomena. Using the slow light effect, optical delays, optical buffers, etc. can be constructed.
The speed of light in a medium is related to the refractive index of the medium, and the propagation speed of light can be divided into the phase velocity of single-frequency light wave propagation and the group velocity of light wave packet propagation composed of many frequency components. Phase velocity refers to the propagation speed of a monochromatic plane wave in its equal phase plane in the medium. For dispersive media, monochromatic plane waves of different frequencies will propagate in the medium with different phase velocities. For a wave envelope composed of multiple monochromatic plane waves, the propagation speed is the group velocity.
Specifically, there may be the following technologies:
Electromagnetic induction technology: From the microscopic mechanism of dielectric polarization, it can be known that there is a large refractive index change at the resonance frequency of the medium, which can effectively slow down the propagation speed of light. Researchers have achieved light speed slowdown and even storage in metal gases, rare earth doped materials, optical fibers, photonic crystal waveguides and micro-ring resonators.
Coherent population oscillation technology: When a beam of strong pump light acts on the medium, the medium will be uniformly widened. If another beam of detection light with a frequency similar to the pump light is injected into the medium at the same time, due to the existence of the pump light , producing a very narrow spectrum hole burning in the material's absorption spectrum, weakening the absorption of detection light.
Nonlinear effect of optical fiber: The nonlinear effect of optical fiber is used to slow down the speed of light. The nonlinear effects of optical fibers include nonlinear refractive index fluctuation effects and nonlinear stimulated scattering effects.
Photonic crystal slow light: Photonic crystal is an artificially designed and manufactured crystal with a periodic dielectric structure on an optical scale. Photonic crystals have an energy band structure. There is a band gap between the energy bands, that is, the photonic band gap. Photons with energy within the photonic band gap cannot enter the crystal. Therefore, the optical band gap structure controls the propagation of light in the photonic crystal. sports.
Coupled resonance transparency technology: It uses mode splitting and destructive interference to effectively suppress strong absorption at the resonance frequency.
Slowing down the speed of light generally has these applications, such as slow light and optical buffers; interferometry and slow light; microwave photonic filters based on slow light.
Tang Jian detected that there was an electromagnetic device here. It is estimated that electromagnetic induction technology causes the speed of light to slow down.
The open space in the distance is estimated to be specular reflection from the ice, and is used for testing. The underground pits are used to place equipment that generates gaseous media. They are now in these gaseous media.
So why is there a laboratory that slows the speed of light here, and who built it.
Xiang Yu said: "How can we continue to enter the gate inside?"
There are some photoelectric holes on the right side of the channel, which appear to be photoelectric switches.
In the middle of the photoelectric hole, there are some flat mirrors that can be rotated.
There is a light source on the left, shining out, and the photoelectric hole on the right is above.
Instantaneous said: "This is easy. I think we should rotate the plane mirror so that the light from the light source reaches the photoelectric receiver."
He Xin said: "How about directly using a mercury lamp to illuminate it?"
He shined a light directly on it, but the gate didn't respond.
Instant frequency said: "It probably requires light of a special frequency."
They rotated several mirrors so that the light from the light source was reflected in a certain direction, and finally entered the photoelectric switch, and the gate opened.
Next enter a large room. After they entered, they looked around.
In this large room, it is surrounded by dark brown walls, with several taupe blocking walls in the middle. Square flat mirrors are placed on the wooden brackets at the four corners. Round flat mirrors are placed in the middle positions. There is a rotating mechanism on the bracket. There is an incident light source at the door. The rectangular box next to another door has a light receiver.
In another area of the room are several robots. The robot has a machine vision system, mechanical arms and mechanical legs, and each joint is relatively flexible. Don't know what it is used for.
A recorded voice came on, introducing the rules for passing through this room. It's like a combat game using optics. The rectangular box next to the door on the opposite side has a light receiver. Only when this laser light source is received will the door be controlled to open. But the robot uses some mirrors to send the light back. Certain rules need to be followed so that the light from the specified light source enters the specified location.
If it is ordinary light and the light shines directly on it, it will be difficult for people to react and adjust each mirror. Now that there is a special medium inside, the speed of light slows down. People can have reaction time.
It seems that the speed of light is controlled to slow down because of the existence of special media in this space and the action of electromagnetic devices. The location of the electromagnetic device is unknown, but it may be behind a few doors. What does this have to do with the clearing in the forest?
Maybe the clearing in the forest was a former experimental site. Or maybe the experimental site here extends to the clearing in the forest.
