When it's cloudy, why can't I see the shadow of the object?

I believe everyone will have such an experience. When the sun comes out, people standing in the forest always leave their own shadows on the ground. However, our shadow is not fixed, it will change with the change of the sun. But what puzzles us is that on cloudy days, no matter standing on the ground or in the forest, we can never see our shadow. In fact, the reason why people can't see the shadow of themselves or other objects on cloudy days is mainly because most of the light of the sun is blocked by clouds or some fog in the sky on cloudy days. At this time, the sunlight that humans can receive is so weak that people or some objects in the forest cannot form shadows.

First, the introduction of shadows In general, if it is sunny, we will find that everything in nature has its own shadow. Generally speaking, we will see the shadows of all things in nature during the day, but seldom see the shadows of natural creatures at night. In addition to this situation at night, there is another situation, that is, cloudy days, and we rarely see the shadow of natural creatures.

Second, the reason why you can't see the shadow on a cloudy day From the above explanation, we can know that everything in nature has no shadow at night or on a cloudy day. The reason why everything in nature has no shadow at night or on cloudy days is mainly because there is not enough sunshine at night or on cloudy days, so they will not have any shadow at all. Accurately speaking, the reason why we can't see people's shadows on cloudy days is mainly because the sunlight is too weak, which makes our shadows too weak for people's vision to distinguish.

Third, summarize the reason why people can't see the shadow of objects on cloudy days, mainly because the sunlight is too weak.