Moths fight fires, moths like bright light so much, why don t they fly directly to the sun?

Because the sun is too far away for moths to fly anywhere, and moths don't know the existence of the sun, they don't fly directly to the sun.

Moths like light very much, **there is light to fly to**, can not fly directly to the sun, the main reason is that the sun is too strong, and the sun's light has special oxygen, moths can not pounce at all.

Because with the flying ability of moths, they can't fly so high at all, and they like to come out at night and rarely have the opportunity to see the sun.

We often say that moths fight fires, and we often see insects hovering under street lamps, and then think that insects are light-oriented. This perception is actually inaccurate.

For hundreds of millions of years, nocturnal insects, especially moths, have relied on moonlight and starlight to navigate. Because moonlight is an extremely distant light source, the light can be seen as a parallel light when it reaches the ground. The moth only needs to fly at a fixed angle to the light to achieve the most perfect and labor-saving flight path.

But since humans learned to use fire, these artificial light sources have shortened the distance between insects and light, and the closer they are, the more radial the light is.

The poor moth did not realize the difference in light, and still thought that flying at a fixed angle to the light was a straight line, and flew and flew, flew into an equiangular spiral, and flew towards the source of the fire. This phenomenon is also known by humans as positive phototaxis in insects.

The moth struggled to get out of the right path, constantly adjusting its angle, but instinctively, and eventually flew towards the light.

During the day, when sunlight enters the atmosphere, it is scattered to form sky light. The sky light is polarized light, and the insect comprehensively refers to the position of the sun and the polarization of the sky light to navigate, rather than being attracted by the sun's light, so it will not fly towards the sun.

Categories: Science & Engineering.

Problem description: Why do you say "moths to fire"? Why do moths like bright places? What to do with moths during the day?

Analysis: There are generally two explanations, but the general meaning is the same: After long-term observation and experiments, scientists have finally uncovered the mystery of "fighting fires". They found that insects such as moths relied on moonlight to orient themselves when flying at night.

The moth always makes the moonlight cast in one direction into its eyes. After the moth is running away from a bat or turning around an obstacle, it only needs to make another turn, and the moonlight will still come from the original direction, and it will find its direction. This is a kind of "astronomical navigation".

When the moth saw the light, it mistook it for "moonlight". Therefore, it also uses this fake "moonlight" to discern the direction. The moon is very far away from the earth, and as long as it maintains a fixed angle with the moon, it can make itself fly in a certain direction.

However, the light was so close to the moth that the moth, instinctively keeping itself at a fixed angle to the light source, had to circle the light until it finally died of exhaustion.

Second, many insects only fly among the flowers when the sun sets and after nightfall, collecting nectar on one side and pollinating plants on the other. In the dark night, they can successfully find the flowers, which is the credit of the "flash language". When nocturnal insects fly in the air, due to the vibration of their wings, they constantly rub against the air, produce heat energy, and emit ultraviolet light to "ask for directions" to the flowers. When the special structure of the insect receives the echo of the "luminous light" of the flower, it will fly away to pollinate the flower, so that it can bear fruit and pass on to the offspring.

In this way, the light language of insects also contributes to the prosperity of nature. Therefore, nocturnal insects are mostly phototaxis, and "moths fighting fires" is a true portrayal of this habit. In addition, in fact, the moth does not subjectively want to die in the flames, but because of the structure of its compound eyes, it gradually approaches the fire when it flies around the fire at a spiral angle, causing the fire to be extinguished.