According to the Meteorological Observatory, on the first day of the New Year's Day holiday, there was a wide range of fog and haze weather in many places in North China, and the visibility was extremely low, which brought great inconvenience and danger to traffic. In such a situation, some drivers may think of using high beams to improve their visibility, but doing so is a wrong choice, because the high beams can make it difficult to see the road ahead, and may even cause accidents. So, why do high beams have such an effect?We will analyze this phenomenon from the principle of light scattering and the spectral characteristics of high beams, and provide you with some safety tips for driving in foggy weather.
First, we need to understand what the scattering of light is. The scattering of light refers to the fact that when light encounters particles of comparable or larger wavelengths than itself, it is absorbed by the particles and re-emitted, thus changing the direction and intensity of the light. Water droplets in the fog are such particles that scatter a wide range of colors of light, but are stronger for shorter wavelengths of blue and violet, and less for longer wavelengths of red and yellow. As a result, the light in the fog will take on a white or gray blurry effect.
Secondly, we need to know the spectral characteristics of the high beam. The light of the high beam is emitted by a white woven lamp through an electrically heated filament, and its spectrum contains a variety of colors of light, among which blue light and violet light have a higher proportion. When the light from a high beam hits into the fog, it encounters more water droplets due to its optical axis being offset, resulting in a stronger scattering effect. The scattered light is reflected back to the driver's eyes, creating a white light curtain that makes it difficult for the driver to see the road and obstacles ahead. That's why the high beams have such an effect.
Finally, we would like to give you some safety tips for driving in foggy weather. When driving in foggy days, be sure to strictly abide by the rules of speed limit, the greater the fog, the shorter the visual distance, do not drive fast, maintain a certain distance between vehicles, and prevent collisions. When driving in foggy days, be sure to use anti-fog lights, comply with the regulations on the use of lights, turn on the front and rear anti-fog lights, tail lights, width indicators and low beams, and use lights to improve visibility, see the vehicles and pedestrians in front of you and the road conditions, and make it easy for others to see themselves. It is important to note that you should not use high beams when driving in foggy weather, as they will have a scattering effect that will make you unable to see the truth ahead. Driving in foggy weather, are the high beams good or bad?The answer is already obvious.
In conclusion, the spectral analysis of high beams can help us understand why it should be avoided when driving in foggy weather. The physics of fog reflection high beams is an interesting and useful knowledge that can give us a better understanding of natural phenomena and also allow us to pay more attention to traffic safety. Driving in foggy days requires not only good driving skills, but also scientific driving concepts to ensure the safety of life and property of yourself and others.