Слайд 2 Electricity - a set of phenomena caused by
the existence, interaction and movement of electrical charges.
Слайд 3
Thales The modern world is impossible without electricity. Now
no one thinks about the technology of its production,
and in ancient times did not even know such a word. But inquisitive minds were then. In 700 BC, the observant Greek philosopher Thales noticed that amber began to attract light objects when friction with wool occurred. This knowledge has been suspended
Слайд 4
Electricity in nature A bright manifestation of electricity in
nature is lightning, the electrical nature of which was
established in the XVIII century. Lightning has long caused wildfires
Lightning is a powerful electrical discharge. It occurs
when there is a strong electrization of clouds or
earth. Therefore, lightning discharges can occur either inside the cloud, or between adjacent electrified clouds, or between an electrified cloud and the earth. The lightning strike is preceded by the appearance of a difference in electrical potentials between adjacent clouds or between a cloud and the ground.