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The phenomena of light in life are as follows:
1. Due to the refraction of light, the old man with reading glasses can see things near clearly.
2. Due to the refraction of light, the myopic student brought on the myopia glasses and saw the blackboard clearly.
3. Due to the refraction of light, I have made good memories with the camera.
4. Due to the refraction of light, people have made slide projectors and projectors, which are convenient for academic reports.
5. Due to the refraction of light, you can see the beautiful scenery of the "mirage".
6. When fishing with a spear, it is impossible to catch a fish if you do not understand the truth that "the fish you see is a virtual image due to the refraction of light".
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Shadow - the straight line propagation of light.
Arrange the formation - take advantage of the straight line propagation of light.
Rainbows, mirages, chopsticks in a cup with water distorted,-- refraction of light, the eye sees things - the (diffuse) reflection of light.
Blackboard reflection – the (specular) reflection of light.
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The light energy bypasses the smaller obstacle and continues to propagate. Unbelief? You can try it! Here's how it works:
1. Diffraction of light (light waves):
1.Light can continue to travel around obstacles, which is called diffraction of light.
2.Only holes, gaps, or obstacles that are about the same size as the wavelength of the light, or smaller than the wavelength, can there be significant diffraction.
2. All waves can be diffracted and diffraction is wave-specific
1.The wave can continue to propagate around the obstacle and is called the diffraction of the wave.
2.Only holes, crevices, or obstacles that are about the same size as the wavelength, or smaller than the wavelength, can there be significant diffraction.
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4 Light Phenomena That Science Can't Explain, Did You Know?
First: the polarization of light
Anyone who knows anything about physics knows that in general "waves" are divided into:Transverse and longitudinal waves,When the wave is vibrating, if the direction is along the direction of propagation, that isLongitudinal wave. When vibrating, if the direction is perpendicular to the direction of propagation, it is a transverse wave. As a kind of "light" of electromagnetic waves, it also has the properties of electromagnetic wavesElectromagnetic waves generated by electromagnetic magnetic fields perpendicular to each other are transverse waves, so light is also transverse waves.
Transverse waves are hindered in their propagation and can only pass through thin slits that coincide with the direction of their vibrations. This also means that if you give it a horizontal slit in a vertical vibrating wave, this light wave is destined to be impenetrable.
Second: the reflection of light
Light is an electromagnetic wave, which has the properties of both a wave and a particle, and occurs when a beam of light ingests the surface of a glass or smooth substanceReflection phenomenon。However, there will also be some parts that cannot be reflected, and when it hits the glass, some of the light will pass through the glass and cause the light to weaken.
Third: the speed of light
The speed of light is constantIn the traditional concept, motion is relative, and when two cars are moving at a speed of sixty yards, they can be stationary with each other, and many of the scenes in the movie are based on this principle. Similarly, if a truck is driving at 60 yards and there is a person running at 2 yards on the roof, the measured speed on the ground is 62 yards. That being said, but this is not in line with the speed of light.
The speed of light is constant and does not change due to foreign objects.
Fourth: The mass of the photon at rest is zero
In Albert Einstein'sSpecial theory of relativityThere is a mass-energy equation that we can find in the vacuum when the photon reaches the speed of lightThe photon mass is zero。ButHiggs bosonPrior to its discovery, the theory was not recognized.
Although the genius of physics Albert Einstein has been away from us for so many years, his ideas are still spread to all corners of the world, and so far, the special phenomena of light have been introduced and hope to solve your doubts.
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Knowing these four phenomena, they are the partial reflection of light, the strange polarization of light, the constant speed of light, and the zero rest mass of photons are these four phenomena related to light, which are also inexplicable by science.
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I know. The first is the formation of ball lightning, the second is the formation of **light, the third is the phenomenon of star-shaped jelly, and the fourth is the phenomenon of spontaneous combustion of the human body.
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I don't know, because I don't know much about these light phenomena, which cannot be explained by science, so these phenomena must be very strange, and these sights must be very spectacular.
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Dark matter has not yet reached a clear conclusion, the mass of photons is still an unsolved mystery in the theory of relativity, the lifetime of neutrons is still unsolved, and there are many mysteries in geomagnetic reactions.
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Rainbow, refraction and reflection of light. Shadow.
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Common light phenomena in life are:
Refraction of light: For example, if you put chopsticks in water, you will see that the chopsticks seem to break, which is due to the different propagation rates of light in different media.
Reflection of light: For example, there is a reflection of a tree on the surface of the lake, which is due to the reflection of light to form a small hole imaging: in the dense shade of the tree, you will find that the light spot through the leaves is round, these are common light phenomena in junior high school physics questions, just memorize the principle.
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Laser (good linearity, can transmit energy concentration), light refraction (put chopsticks in a glass of water, chopsticks will bend). There's so much more that you will learn slowly ...
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Dispersion of light.
Refraction of light. Convex lens imaging.
Total reflection of light.
Interference of light. Newton's color palette.
Mixing of light. It should be enough, you should be better for yourself, I've been looking for it for a long time, and it's not interesting enough not to give me the best. If it's not enough, it's okay to say.
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The refraction of light is, for example, if you put a chopstick in a glass filled with water, you can see as if the chopsticks have been broken on the surface of the water.
Thin pieces of paper falling from a high place, even if there is no wind, the path of the paper falling is tortuous and changeable. This is due to the different convex and concave parts of the paper piece, the shape is different, so in the falling process, the air flow velocity of various places on its surface is different, according to the principle of fluid mechanics, the flow rate is large, the pressure is small, resulting in the uneven air force everywhere on the paper, and changes with the change of the movement of the paper, so the paper is constantly tumbling and twisting.
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