At sunset, lamps on the street or courtyard are lit and insects gather around the lamps
Answers
They gather around the lamps or other lights because they sctually think that they are flying or crawling or climbing towards daylight.They think that its a place where there are sunrays.....that's probably what they think!
Answer: There are several theories sys that insects Use light as a guide and get confused by the ultraviolet rays, considered light source as flowers
Explanation:
At sunset, lamps on the street or courtyard are lit and insects gather around the lamps
Many theories tried to explain the reason of this.
One of the theory said , it's because of the phenomenon phototaxis.
Some insects are show positive photoactic that means they move towards natural light like from sun as a guide. But artificial light confuse them because rays coming from artificial source scattered in every angle . To find specific angle they more in circular motion under the light.
Another theory says that artificial light release small amount of uv rays which is reflected by some flowers . Insects got confused and move towards artificial light source for the search of flowers.
All these are theories , scientists are still in search to find out the exact reason of this.