Excuse me, does light travel in the form of waves? Isn t it true that infrared also has a frequency

Waste of space !! The essence of light is electromagnetic waves, visible light wavelengths from 400nm to 700nm, greater than 700nm called infrared band, divided into near infrared, mid-infrared, far infrared.

Near-infrared band 700nm 3 microns.

Mid-infrared band 3 5 microns.

Far infrared band 8 14 microns.

Light has wave-particle duality:

1. The property of waves refers to the characteristics of light such as diffraction and interference;

2. Particle nature is the so-called reflection from the perspective of middle school students' understanding; However, in essence, it should be the quantization of the energy of the photon, simply put, the energy carried by the photon is one by one, and the energy of each part is equal to the wavelength x Planck's constant, which must be an integer multiple of this number, not in between, just like a particle one by one.

Well, there's no better explanation.

This answer is really ignorant.

Light is a wave. Infrared is the part of the spectrum that is not red and comes in various frequencies.

Light has wave-particle ditropy, which is learned in high school physics, and you can read it much more clearly when you flip through the book. That is, light has the properties of particles and waves.

Infrared:

Frequency. 10^

Hz wavelength in vacuum. 3*/10^

mVisible light: frequency.

Hz wavelength in vacuum.

m Ultraviolet light: frequency.

Hz wavelength in vacuum. 4*10 -7--- 6*10-9m frequency size comparison: infrared "visible light" ultraviolet rays.

Comparison of wavelength sizes: infrared, visible, ultraviolet.

Hello: 1, radio waves, microwaves, infrared, etcWavelength] and [Frequency. ] is inversely proportional: the shorter the wavelength, the higher the frequency.

2. The so-called arrangement, both of which are OK, can be in accordance with [Wavelength] length arrangement, you can also follow [Frequency. ] High and low arrangement.

The wavelength frequency is low, and the relationship between them is inversely proportional.

It's a question that someone seems to have asked before. This involves knowledge of physics in high school.

Light wave is a kind of electromagnetic wave, people often say that visible light, is only a very small part of all electromagnetic waves, light waves have a frequency band: Nian Ming Bang.

Infrared, red, orange, yellow, green, cyan, blue, violet, ultraviolet. The speed at which it travels in a vacuum is the speed of light.

Speed of light = wavelength multiplied by frequency.

The longer the wavelength, the lower the frequency; The shorter the wavelength, the higher the frequency.

A: Infrared is a light wave, and light waves have frequency bands.

Frequency vs. wavelength of light:

u f, where u is the speed of the wave and f is the frequency.

The process is as follows:

1) The wavelength is equal to the product of the wave velocity u and the period t, i.e. =ut.

2) The frequency f=1 t obtains: t=1 f. (This is the relationship between perimeter and frequency) 3) t=1 f is substituted for =ut, and =u f is obtained.

The units of u f: m, m s, hz respectively.

Wavelength vs. frequency:Frequency is the number of waves passing through a specified place at a fixed time, i.e., v=1 t. And the expression for wavelength is =ut, and the relationship between wavelength and frequency can be obtained as:

u/v。The unit of propagation velocity in the sub-relation is meter seconds, the unit of frequency f is hertz, and the unit of wavelength is meters.

Example: If a broadcasting frequency used in a broadcasting program is 639kHz (kilohertz), and the propagation speed of electromagnetic waves in the air is the speed of light three times ten to the eighth power of the nuclear thickness per second, then the wavelength of the radio wave of the program can be calculated = 300000000m s 639000hz=.

The wavelength range of visible light is between 770 and 350 nanometers. Electromagnetic waves with different wavelengths cause different colors to be perceived by the human eye. 770 622nm, felt red; 622 597nm, orange; 597 577nm, yellow; 577 492nm, green; 492 455nm, blue indigo; 455 350nm, violet.

Infrared is an electromagnetic wave with a wavelength between microwave and visible light, with a wavelength between 760 nm and 1 millimeter, and is a non-visible light with a wavelength longer than red light.

To put it simply, it is an electromagnetic wave with a wavelength longer than the wavelength of red light in visible light and a lower frequency.

Light travels in the form of waves. If the transition is followed by just enough to fill the vacancy in the orbit and from the excited state to the stable state, the electron stops transitioning. Otherwise, the electrons jump back to their previous orbits again and release energy in the form of waves.

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

The beam of light 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 transfer. There are three laws of light propagation in geometric optics:

1) The law of linear propagation of light is as described above. Geodetic surveys are also based on this.

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

3) The law of reflection and refraction of light. When light travels through the interface of two different media, part of it is reflected and part of it is refracted. Reflected rays follow the law of reflection, and refracted rays follow the law of refraction.

Light is indeed a stream of particles, but in the process of observing it or in the process of light interacting with other substances, due to the transmission of information, the original particle flow is disturbed, so that the particle flow exhibits the nature of fluctuations. It is true that this material world is made up of particles, but when we look at the world, our consciousness is disturbed, which causes the particles to fluctuate, and in essence, the so-called particles are just our thoughts at work. Whether a particle exists or doesn't exist depends on what we think, whether you think it has it, and what you think it doesn't have without it.

So everything is just our illusion, and it is precisely when we try to observe the world that the world becomes so varied, and when we calm down and meditate, the world becomes quiet again. Everything is the result of your mind at work, or the result of the joint action of all of our minds, just as each of our lives is a projector, projecting this physical world together, do you say this world is real? That's right, because it's all of us imagining, do you say it's fake?

Yes, because the world does not exist without us, should we, as observers of the physical world, straighten out our thinking and think about who we really are? Did the world create us, or did we create the world.

Light is an electromagnetic wave, and it has wave-particle duality.

Electromagnetic waves include: radio waves, infrared, visible light, ultraviolet rays, roentgen rays, rays;

The wavelength of infrared rays is shorter than that of radio waves;

So the answer is: electromagnetic, short