The formation of tornadoes is generally related to the sever
convection caused by the heat of local area of the upper and
lower regions, but the strong convection does not necessarily
produce a tornado with a vacuum pump effect.
Soviet scholars Viktor Kushin proposed the inner gravity of
tornado, namely new theory of the cause of thermal process:
when the atmosphere becomes like" layers of scones”, thunderstorm
cloud quickly forms inside. At the same time, the air near the
area drops rapidly, forming a huge rotating vortex. In the vortex,
wet air flow along the spiral upward, forming a thin space, in
which the air inside becomes cold quickly and water vapor become
condensate. This is whay people think tornadoes are like cloud
column with thick fog.
But the problem is that in winter or at nights of some areas,
when there is no strong convection or storm clouds, tornadoes
still occur, which makes people feel the difficulty of the matter.
Besides, there are some weird things about tornadoes that are
It sweeps through towns, destroy houses, scrape the cupboards
from one place to the other, but it doesn’t break a bowl in
the cupboard. People who are frightened by it are often carried
aloft, and then are taken safely to the ground; if the air
cyclone is on its course, it always scrapes the roof of the
house exactly two or three hundred metres away, and then fling
it to the ground, but everything in the room remains intact.
Sometimes it plucks the hair from one side of the chicken,
while the other side is intact. It can blow a hundred years
of old pine trees and twists it into a new ribbon, while the
little poplar trees near it isn’t damaged even a single branch.