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  4. What color is the most penetrating light...

What color is the most penetrating light in visible light?

The answer is red light.The longer the wavelength, the stronger the penetration


From the knowledge about waves in middle school physics, we can know that the shorter the wavelength, the weaker the diffraction ability, and the less easy it is to bypass small obstacles. The longer the wavelength, the weaker the unit energy level, but the more obvious the diffraction ability. Therefore, when there are opaque particles in the air, the shorter-wavelength violet light will be blocked by these small particles, while the longer-wavelength red light will diffract when encountering small particles, which is equivalent to bypassing Small particles are removed, so the so-called penetration is better.

 

The light of a red light penetrates the fog better than green and yellow light and travels far into the distance to alert the driver.


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