What is ball lightning?

Ball lightning, commonly known as rolling thunder. It usually happens in thunderstorms, and it is spherical lightning. This is a real physical phenomenon. It is very bright, almost spherical, and its diameter is about 15 to 40 cm. It usually lasts only a few seconds, but it also lasts 1 to 2 minutes. In addition to the common orange and red, there are yellow, purple, blue, bright white and dark green auras, showing a variety of colors.

Spherical lightning is harmful. It can float freely in the near-earth air or fly against the wind with the fluctuation of airflow. It can enter the room through open doors and windows, usually through chimneys. It can even slide on the steel wire, sometimes hover, sometimes disappear silently, and sometimes explode because of obstacles.

Spherical lightning usually appears in thunderstorm weather. Usually it lasts only a few seconds, but there are also 1-2 minutes. Even more amazing, it can move independently and slowly in the air.

Because of the low frequency of spherical lightning, it is difficult for scientists to make systematic observation. 20 12 Chinese scientists photographed spherical lightning for the first time, which was published on 20 141October 28th. Theoretically, some people think it is a hot air mass or a vaporized element, such as carbon, sodium or copper. Although this theory can explain some characteristics of spherical lightning, it can't explain why it can form in the aircraft cabin. In addition, there are many different theories, such as plasma, ions, charged dust, water with an outer electron layer and so on. But none of them can fully explain this scientific unsolved case.

Spherical lightning is mysterious because it is uncommon, uncertain, changeable in color and shape, and has great instantaneous destructive power. Therefore, as early as in ancient Greece, people began to pay attention to this strange natural phenomenon.

Many people think that spherical lightning is a low-density plasma at room temperature. Due to the bombardment of "solar wind" and cosmic rays, the air around the earth is ionized into an ion layer composed of positive ions, negative ions and free electrons. When some ions and electrons in the ionic layer gather, spherical lightning may form.

According to meteorologists, when a thunderstorm suddenly occurs, the charged clouds are very close to the ground, and some protruding objects on the ground generate induced charges, which form a discharge between them, thus forming a rolling thunder. Rolling mines are easy to cause electric shock damage to people and objects on the ground.

Spherical lightning is still a strange natural phenomenon that people cannot explain. A feature of * * * is that spherical lightning basically occurs in thunderstorm weather.

August 20 13, the team of the United States air force academy in Colorado produced similar spherical lightning with a special solution. But at the same time, the team said frankly: "I need to be honest: we are not sure that what we produced in the experiment must be what people call spherical lightning."