Do you know why fireflies glow? Let's learn about it together!
Fireflies are most fond of summer, and children often see fireflies on summer nights. There are two thousand kinds of fireflies in the world, mostly appearing by rivers, ponds, and fields in summer, and their activity range generally does not leave the water source.
Fireflies are divided into terrestrial and aquatic categories according to their living environment. The former accounts for most. Terrestrial fireflies often inhabit places with high cover, lush vegetation, and relatively high humidity, while aquatic fireflies have higher environmental requirements, the water cannot be polluted, and cannot be affected by light pollution. Therefore, we must protect nature and protect the environment! Then we can see more fireflies!
Why are fireflies so bright?
The firefly's light organ consists of light cells, reflector cells, nerves, and epidermis. If we compare the structure of the light organ to a car headlight, the light cells are like the headlights, and the reflector cells are like the headlight covers, which concentrate the light emitted by the light cells. Therefore, even though it is just a small glimmer, it feels very bright in the dark. The firefly's light organ will emit light, starting with the nerve impulse transmitted to the light cell, which releases the previously inhibited fluorescent substances. The light cell inside the firefly contains a phosphorus-containing chemical substance called fluorescent, which, under the catalysis of fluorescent, produces light. Since most of the energy produced by the reaction is used for light emission, only 2~10% of the energy is converted into heat energy, so when the firefly stops on our hands, we will not be burned by the firefly's light, so some people call the light emitted by the firefly a 'cold light'. The light cell inside the firefly contains a phosphorus-containing chemical substance called fluorescent. When fluorescent encounters, it will cause a chemical reaction, thus producing light. The duration of the light emitted by different fireflies is different, some less than one second, some can last for several minutes. The abdomen has 7~8 segments, with a light organ at the bottom of the terminal part, and the fluorescent and fluorescent enzyme reaction inside generates a yellow-green fluorescent.
Now that children know how fireflies are bright, shouldn't we draw pictures of fireflies? Try it! If you draw it well, you can send me photos of your work! The news can have more children see your works! Looking forward…
