Interesting light phenomena, what are the light phenomena in life give examples .

Rainbow, refraction and reflection of light. Shadow.

Tyndall phenomenon, where there are many big trees, you can see a beam of light through it, small hole imaging, camera imaging, not a digital camera, it's the kind of rainbow that uses film, the dispersion of light, I remember.

Mirage, reflection of light, refraction.

If you drip oil from the puddle, you will see a lot of colors and light interference.

The small yellow bump on the back of the bicycle, the reflection of light (if the car behind it hits it at night, the light will reflect back, indicating the effect).

Something else... I don't remember.

There are lights illuminated at night; Use a flashlight to illuminate the road at night; The small light of the charger is on, which means that it can charge the phone when it is powered on.

Take a look at it, it might have what you're looking for.

Monocular collimated light propagates in a straight line.

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".

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.

Question 1: What are the phenomena of light Answer: interference diffraction Poisson bright spot (diffraction) Water surface oil film (thin film interference) Polarization.

Interference, diffraction phenomena can explain the wave nature of light].

The photoelectric effect, the Compton effect, illustrates the particle nature of light].

Photoelectric effect (particle) Rainbow after rain (reflection).

Optical fibers (reflective) Solar eclipse (indicating that light travels in a straight line).

Question 2: What are the other phenomena of light in different media in addition to the reflection phenomenon The similarities and differences between the reflection phenomenon and the refraction phenomenon of light.

1) Similarities.

Both refracted and reflected rays are located in a plane determined by the incident rays and normals.

Both refracted and reflected rays are separated on either side of the normal.

When the angle of incidence changes, both the angle of refraction and the angle of reflection change.

In both refraction and reflection phenomena, the optical path is reversible.

2) Differences.

The reflected rays are in the same medium as the corresponding incident rays; The refracted rays and the corresponding incident rays are in two different mediums and are located in.

Both sides of the interface.

The angle of reflection is equal to the angle of incidence; But the angle of refraction is generally not equal to the angle of incidence, and when light is obliquely emitted from air into other mediums, the angle of refraction.

Less than the angle of incidence, whereas when light is obliquely emitted into the air from other mediums, the angle of refraction is greater than the angle of incidence.

As soon as people open their eyes, they will be exposed to light, and the phenomenon of light is a very common physical phenomenon that people are exposed to, and it is also one of the earliest physical phenomena studied by human beings. As early as 2,300 years ago, in the "Book of Ink", China's linear propagation of light, the reflection of light, and the imaging of plane mirrors and spherical mirrors described the world's earliest optical experiments, and made a relatively clear explanation. The study of light phenomena has gone through a process from shallow to deep, from simple to complex.

The study of light phenomena can be summed up in three questions: How does light come about? How does light travel?

How do light and matter work? So far, the study of light phenomena has formed a rigorous and well-established discipline of optics, which is an important part of physics.

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.

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.

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.

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.

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.