What is the effect of the wavelength of light on light?

How does the color change when the wavelength changes?

Why is it easier to diffract when the wavelength is longer? Is diffraction scattering or reflection?

The four properties of light: reflection, refraction, diffraction, interference.

Diffraction you can analogy with a water ripple, and his condition is that the wavelength is much larger than the diameter of the hole.

There are two types of diffraction: obvious diffraction and insignificant diffraction.

You can imagine that when a water ripple encounters a strip-shaped obstacle with a hole in the middle of the front, it can propagate through the hole and form a semicircle, which is an obvious diffraction phenomenon. If the hole is large, then the propagated image is similar to the image without an obstacle, and there is no obvious pattern passing through the hole to the back of the obstacle, which is not obvious diffraction.

As for the wavelength and color of light.

The frequency of monochromatic light is constant no matter what medium it is, but because the medium is divided into "optically phobic medium" and "optically dense medium", the propagation speed of the same light will change. Speed = wavelength multiplied by frequency, so the wavelength also changes, and the color of light is only related to the frequency of light.

The shorter the wavelength of light, the greater the energy.

The speed of light = wavelength * frequency The speed of light is certain The smaller the wavelength, the greater the frequency According to the basic formula of quantum mechanics e=hv (h is Planck's constant, v is frequency), it can be seen that the greater the frequency, the greater the energy, so the shorter the wavelength, the greater the energy This is the reason why the energy of gamma rays is much greater than that of infrared rays.

Upstairs misunderstanding. Light can be understood as an electromagnetic wave.

Wavelength is a property of light, a special type of electromagnetic wave.

The wavelength of light is different in different media.

Only frequency is constant.

Don't lose liberal arts students... There is a level of questioning...

The wavelength of light does not change. A type of light has a wavelength.

The wavelength determines the speed at which light travels through the medium.

The wavelength changes--- the color changes.

The longer the wavelength, the easier it is to diffract.

The wavelength of the light wave has an effect on the absorption of light: the frequency of monochromatic light is constant no matter where the medium is, but because the medium is divided into "optophobic medium" and "optically dense medium", the propagation speed of the same light will change. Velocity dispersion = wavelength multiplied by frequency, so the wavelength will also change, and the color of light is only related to the frequency of light.

When a water ripple encounters a strip-shaped obstacle with a hole in the middle of the front, it can propagate through the hole and form a semicircle, which is an obvious diffraction phenomenon. If the hole is large, then the propagated image is similar to the image without an obstacle, and there is no obvious pattern passing through the hole to the back of the obstacle, which is not obvious diffraction.

Classical theory. In classical theory, molecules and atoms are regarded as oscillators, in which electrons vibrate under the action of binding forces. The structure of a molecule or atom determines the natural frequency of electron vibration.

When light passes through a medium, the electrons in the molecule are forced to vibrate under the electric field of the light waves, and at the same time, they are also driven by the chain of radiation and due to the interaction between molecules.

And by a direct proportion.

Resistance to the speed of motion, this forced vibration, especially when close to resonance, strongly absorbs energy from the light waves.

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 of the 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, and the unit of frequency f is hertz.

The unit of wavelength is the meter.

Example: The frequency of a radio program is 639kHz (kilohertz), electromagnetic waves.

If the speed of propagation in the air is three times ten times the eighth power of the cubic meter per second, the coarse waves of the radio nucleus of this program can be calculated.

Wavelength =300000000m s 639000Hz=.

In light waves, different wavelengths are different colors of light.

Wave speed = frequency * wavelength, the difference in wavelength is equal to the difference in frequency, the longer the wavelength, the lower the frequency, the shorter the wavelength, the higher the frequency, this is infrasound, ultrasound, etc. If in water, the longer the sound wave, the lower the frequency, the longer the travel distance, the shorter the sound wave, the higher the frequency, the shorter the travel distance. In the air, the longer the sound wave, the easier it is to pass through the obstacle.

In the rope wave, it reflects the periodic period of the simple harmonic motion of the rope and the elastic coefficient of the rope.

The relationship between the wavelength and frequency of light is a tremor: v=f is constant for any situation; where v is the speed of the wave, f is the frequency, and is the wavelength.

Frequency of light:

1. Light itself is an electromagnetic wave, and its propagation is carried out by alternating vibrations of electric and magnetic vectors perpendicular to and perpendicular to each other in the direction of propagation. It is a transverse wave.

2. The number of vibrations of the electric vector and the magnetic vector of light per unit time is the same, that is, they have the same frequency, and the frequency of light refers to this frequency. The frequency range of visible light is about, infrared light is smaller, and ultraviolet light is larger.

3. When it comes to waves, there are frequencies and wavelengths. Light wave in vacuum: wavelength frequency code shading speed (3 10 Chi Xinzhou 8m s), the wavelength range of visible light is about 780nm 390nm, infrared is longer, ultraviolet is shorter.

Wavelength of light:Light is an electromagnetic wave, and the wavelength of light is the wavelength of the electromagnetic wave.

The relationship between the wavelength and frequency of light and the medium of propagation:

1. The relationship between wavelength and frequency is inversely proportional to each other, and the specific formula should be taken to see what wave is transmitted in what transmission medium, for example, the wavelength of light = the speed of light * (1 frequency) The unit of light speed is meters per second, and different color spectra have different frequencies. v=f is always true for any situation. where v is the speed of the wave, f is the frequency, and is the wavelength.

2. The frequency of light remains unchanged in propagation, which means that when light passes through different media, the frequency scatter group remains unchanged and the wave punch branch length changes.

Therefore, the wavelength of light is determined by the frequency (color) of the light, as well as the medium through which it travels.

The wavelength of light is inversely proportional to the energy of light, the longer the light wave, the smaller the energy, and the shorter the light wave, the greater its energy.