Several people took the stones and stayed at a nearby hotel. Then go to the back of the inn and continue studying the stone.
Duan Zhu said: "This is the gravity stone, that's what I named it for now. Put it here, then turn on the light source and see the light bending."
Duan Zhu turned on a laser, which was originally shining on the opposite screen. Duan Zhu placed the gravity stone on the table. The light seemed to be attracted, and the illumination point moved downward.
As the gravity stone moves, the light seems to be pulled, like it is being held by a rope, moving with it.
He placed several gravity stones in different positions, and the light changed in several different directions. Throw it at Stone A first, then Stone B, then Stone C, like a piece of iron being attracted to a magnet.
For example, turn on navigation on the map, set destinations A, B, and C, and the car will drive automatically. According to the set location, the car will travel to A, then B, and then C. The only difference is that it does not reach A, but deflects when it is about to reach it.
It's like drawing a curve on a drawing software, setting the starting point, the center of the curvature radius, and moving the mouse up and down. The shape of the curve will also change, but the end point is not set.
Duan Zhu said: "It would be nice if an optical expert could explain it."
Sun Shiji said: “It’s just that the three of us are all majoring in mechanics.”
Wu Tian said: "But we also studied optics in college physics."
The wave-particle duality of light means that light has both wave and particle properties. Scientists have discovered that light can both propagate forward like a wave and sometimes behave like particles. Therefore, light is called "wave-particle duality".
Regarding the wave characteristics of waves, supporter Huygens believed that light is a mechanical wave; a light wave is a longitudinal wave that relies on a material carrier to propagate, and the material carrier that propagates it is "ether"; each point on the wave surface itself is caused by The wave source of medium vibration. According to this theory, Huygens proved the law of reflection and refraction of light, and also better explained the diffraction and birefringence phenomena of light and the famous "Newton's Ring" experiment. If these theories are not easy to understand, Huygens cited another example from life to refute the particle theory. If light is composed of particles, then the particles must collide with each other during the propagation of light, which will definitely cause the direction of light propagation to change.
Regarding the particle nature of light, supporter Newton proposed: First, if light is a wave, it should be able to bypass obstacles and not produce shadows like sound waves; second, the birefringence of iceberg stone shows that light has Different edges have different properties, and the wave theory cannot explain the reason.
Eins believed that for the average value of time, light behaves as a wave; for the instantaneous value of time, light behaves as a particle. This is the first time in history that the unity of wave nature and particle nature of microscopic objects is revealed, that is, wave-particle duality. This scientific theory was eventually widely accepted by the academic community.
How does this gravity stone change the propagation of light? Everyone is thinking.
One possibility is that it changes the refractive index of the surrounding space, causing light refraction to change. Maybe the refractive index changes continuously. Light follows curves, not polylines. For example, optical fiber, the propagation of light in the optical fiber uses the total reflection of light. The refractive index of the fiber core is higher than the refractive index of the cladding. At the interface between the core and the cladding, light undergoes total internal reflection and zigzags along the fiber axis.
One possibility is that it disturbs the surrounding space and the original propagation of the wave is disrupted. A stone falls into the water and causes ripples, and another stone falls into the water, blocking the original water ripples.
One possibility is that it is similar to a magnet that attracts iron. The midpoint of the bar magnet is suspended with a thin wire. When it is stationary, its two ends will point to the south and north of the earth. The end pointing north is called the north pole or N pole, and the end pointing south is the south pole or S. pole. The Earth's magnetic north pole is the south pole, and the geomagnetic south pole is the north pole. Between magnets, magnetic poles with the same name repel and magnetic poles with different names attract. The compass repels the south pole, and the north pole repels the north pole.
One possibility is that the light passes through different spaces, from point A to B through a different space, with a section in the middle in a different space, and from point B to C through a different space.
Wu Tian said: "Why can we see that the light is distorted instead of intermittent?"
Duan Zhu said: "There are a large number of space entry and exit points, which cannot be seen from a macro perspective. These space entry and exit points are very dense, and they enter and exit countless times. For example, when a train enters a tunnel, it enters and exits many times. However, the train travels The route is continuous in the same space. It's just that what we see is that it keeps disappearing and appearing. The light disappears and appears in different spaces. It heads towards the north from the entry point, and may be when it comes out of the space. Facing the northwest direction. When you enter the space again, you may be facing the south direction when you come out of the space."
Wu Tian said: "Then I want to ask a question, where does this thing come from?"
Sun Shiji said: "It must be a meteorite."
More than 40,000 meteorite samples have been collected around the world, with various styles. They can be roughly divided into three major categories: stony meteorites (main component is silicate), iron meteorites (iron-nickel alloy) and stony iron meteorites (mixture of iron and silicate). Meteorites are composed of iron, nickel, silicate and other minerals, and are also called meteorites. Also refers to meteorites that contain more stone or are entirely stone. A large amount of organic compounds such as ammonia, nucleic acids, fatty acids, pigments and 11 kinds of amino acids are also found in meteorites with high carbon content.
Wu Tian said: "It's a meteorite. It needs to be handed over to the research institute immediately to check whether there is any radiation. It may not be safe for the human body."
Sun Shiji said: "There are ways to tell whether it is a meteorite."
When meteorites fly at high altitudes, their surface temperatures reach several thousand degrees. At such high temperatures, the surface of the meteorite melts into liquid. Later, due to the obstruction of the denser atmosphere in the lower layers, its speed became slower and slower, and the melted surface cooled down, forming a thin shell called a molten crust. The molten shell is very thin, generally about 1 mm, and the color is black or brown. During the cooling process of the molten shell, traces of air flow blowing across the surface of the meteorite are also retained, which are called air prints. The air marks are very similar to finger prints pressed into the dough. Molten crust and gas imprint are the main features of meteorite surfaces. If there is such a layer of molten crust or gas mark on the surface of the stone or iron block, it can be inferred that it is a meteorite. However, some meteorites that fell for a long time have difficult to identify the molten crust and gas marks due to long-term wind, sun and rain.
Stone meteorites generally contain a few percent of iron and are magnetic. You will feel it when you try it with a magnet. There are many small chondrules in the cross section of the stony meteorite. Pellets are generally about 1 mm in size, and some are as large as 2 to 3 mm or more. This is an important mark for identifying stony meteorites. The main components of iron meteorites are iron and nickel. Iron accounts for about 90%, and the nickel content is generally between 4% and 8%. The nickel content in natural iron on the earth generally does not have this much.
Duan Zhu said: "Maybe someone made it and threw it here."
Wu Tian said: "Why are we the only ones who encountered it?"
Sun Shiji said: "This is accidental, maybe someone else encountered it."
Duan Zhu said: "But the people who come to Shengqi City recently are all engineers, and there will always be engineers who encounter this stone."
Wu Tian said: "Yes. It is inevitable by chance."
Duan Zhu said: "After we met, it changed from chance to necessity."
