Is it a long wavelength of light penetrating power

It is true that light with long wavelengths is traditionally strong.

The wavelength of red light and the short wavelength of violet light can be seen that the energy of violet light is higher in comparison. Violet light has high energy and is not prone to diffraction, which is the reason for burning clouds.

Red light wavelength, strong penetration, according to this principle, satellites can detect the surface of the earth with red light through atmospheric clouds, and in foggy weather, red lights are used to illuminate or the red light of traffic lights indicates that the danger stops because of the strong penetration of red.

The more the problem is debated, the clearer it becomes. From the above discussion, it can be seen that:

Short wavelengths have high energy and long wavelengths are easy to diffract.

The red light is easy to pass through the fog, which is diffraction, so at this time, the long-wave penetration ability is strong.

The hospital does X-ray, which is to penetrate the human body, and the short-wave penetration ability is strong.

So generally speaking, penetration still refers to the latter. Therefore, it is better to answer the shortwave one.

Strong penetration: It is not the diffraction that occurs that is obvious, but the energy is high (e.g., ultrasonic waves have a very short wavelength but extremely penetrating power).

The longer the wavelength, the easier it is to diffract,"Bypass"Barrier.

The shorter the wavelength, the stronger the penetration.

Light with a short wavelength has high energy and is more penetrating. And the short wavelength is not easy to diffraction.

Wrong. The frequency of the wavelength is smaller, and its penetration ability is not as large as that of the short wavelength.

Generally short-wavelength. Because it is more prone to diffraction.

No, it's short, it's frequent.

What do you mean by penetration?

Is it a high-density mass or a low-density cloud?

Is it? Isn't it the penetrating power of those invisible rays?

The relationship between wavelength and penetrating delay key is that the longer the wavelength, the weaker the penetration.

Because the longer the wavelength, the shorter the frequency of the wave, the weaker the energy per particle, but the stronger the diffraction ability of the wave, so the relationship between the wavelength and the penetrating force is that the longer the wavelength, the weaker the penetrating force.

Wavelength of cognitive processes:

1. Before 1920, people only mastered the long and medium wave bands of radio waves, and the application of electromagnetic waves was limited to the transmission of telegrams, still images and a small amount of **.

years, people mastered the bright imitation shortwave. Since then, the fields of ultra-short wave, code splitting microwave and millimeter wave have been developed, and large-capacity microwave and satellite communications have emerged. Roughly speaking, every ten years, a new band can be developed and mastered.

3. For wireless communication, information must be transmitted by electromagnetic waves. The higher the frequency of electromagnetic waves, the greater the amount of information they can carry. And the higher the frequency, the shorter the corresponding wavelength.

Strong UV penetration.

According to the optical principle, yellow light has a stronger penetrating ability than blue light.

Especially when driving at night on rain, snow and fog days, the light car with a color temperature of about 3000K will definitely shine farther than the 5000K and 7500K ones.

The ability of light to penetrate is determined by their frequency. The higher the frequency, the stronger the penetration. Visible light.

The frequency of medium violet light is the highest. However, the light penetration of the yellow anti-fog lamp is strong, and the yellow spring color is the purest color, and the yellow anti-fog lamp of the car can penetrate a very thick dense fog to a long distance.

Wavelength has a certain relationship with penetrating power. The details are as follows:

In general, the shorter the wavelength, the higher the energy of the light and the more penetrating it will be. This is because the shorter the wavelength, the higher the frequency of the light, and the higher the frequency, the greater the energy of the light and the more material it can penetrate. For example, ultraviolet light has a shorter wavelength than visible light, so ultraviolet light has higher energy and more penetrating power, and can penetrate substances such as glass.

But this is not always the case, as different substances also have an effect on the penetration of light. For example, for some special materials, they have a strong absorption capacity for a specific wavelength of light, so even if the energy of that wavelength is high, it cannot penetrate the substance. Therefore, the relationship between wavelength and penetrating power also needs to consider the absorption characteristics of the material itself.

Wavelengths of transverse and longitudinal waves:

Wavelength refers to the displacement between two relatively equilibrium positions in the pattern of the wave along the propagation direction of the Bobiling. The meaning represented by the wavelength of a transverse wave is different from that of a longitudinal wave. In transverse waves, wavelength refers to the distance between two adjacent points that are phase out of phase, usually the adjacent front, trough, or zero-crossing point of the opposite leakage.

In longitudinal waves, wavelength refers to the distance between two adjacent dense or sparse parts. Wavelength is often expressed in physics as , and the SI unit is the meter (m). <

UVA 1 is the most penetrating. Penetration is determined by energy, penetration is the ability of energy to externalize and penetrate matter and radiate to the outside world, the stronger the energy, the greater the penetrating power. Ultraviolet light is the most penetrating of invisible light.

Ultraviolet light is the light with a wavelength of 10 400 nanometers (nm) in sunlight, which can be divided into three types: UVA (ultraviolet A, wavelength 320 400 nm, long wave), UVB (wavelength 280 320 nm, medium wave), and UVC (wavelength 100 280 nm, short wave).

Wavelength short. In general, the shorter the wavelength, the stronger the penetration. For example, ultraviolet light has a shorter wavelength and is therefore able to penetrate the surface across the atmosphere, using it to image surface features.

In contrast, visible light has a longer wavelength, and it can only travel through the air and cannot penetrate the earth's surface.

The basics of light:

1. The object that can emit light is called a light source.

2. Light travels in a straight line in a homogeneous medium, and the atmosphere is inhomogeneous, and when light shines from the atmosphere to the ground, the light is bent.

3. The speed of light, the speed at which light propagates in different substances is generally different, and it is the fastest in vacuum.

4. The application of linear propagation of light can explain many optical phenomena, such as laser collimation, shadow formation, formation of lunar and solar eclipses, and imaging of small holes.

5. Light, a straight line that represents the direction of light propagation, that is, a straight line is drawn along the propagation route of light, and an arrow is drawn on the straight line to indicate the direction of light propagation. <>

The shorter the wavelength, the higher the frequency of the wave and the greater the penetrating ability.

The speed of propagation of light in the same medium is the same, according to v = f, f = v the wave speed is the same, the shorter the wavelength, the higher the frequency of the wave, the greater the energy, and the greater the penetrating ability.

Meaning of penetration:

Penetration should generally be understood as transmittance, transmittance and absorption are complementary, and the sum of the two should be 1. In other words, the high transmittance of electromagnetic waves incident on a certain material is due to the small absorption rate of electromagnetic waves by this material in this band. What determines the magnitude of the absorption rate is the difference in energy levels present in the atoms or molecules themselves that make up this substance.

The energy level includes the outer electron circle of the atom, the inner electron level, the vibration and rotation energy level of the molecule, etc., which are essentially the energy values generated by the various movements of atoms and molecules.

If the electromagnetic wave frequency (inversely proportional to the wavelength) corresponds to a certain energy level difference (energy Planck constant frequency), it will interact with the atomic and molecular energy inside the matter (this is resonance from the perspective of classical mechanics), and the energy of the electromagnetic wave is transferred to the atoms and molecules, so that they can obtain energy and undergo an energy level transition (obtain a higher energy value), that is, the electromagnetic wave is absorbed by the matter.

The distribution of energy levels in the same type of motion state is different in the atoms and molecules of different substances, and the energy level values of different types of motion states of the same atom and molecule are even more different. Therefore, the absorption rate of electromagnetic waves in various bands is different for different substances, and the absorption of electromagnetic waves by the same substance also forms its unique spectral band. <>