Knowledge

History of flashlight

The development of mobile lighting tools can be traced back to the early stage of human society - primitive society. Since human beings learned to drill wood to make fire, mobile lighting has experien

The birth of flashlight

Modern civilization should really thank Thomas Edison, the American inventor, who made the first white lamp with commercial value and brought light to mankind. However, Conrad Hubert deserves the same

First aid at the scene of being shot by electric shock gun

Quickly disconnect from the power supply: turning off the power supply is one of the most effective first aid measures.

Performance in being shot by electric shock gun

"Electric inlet" and "electric outlet" can be seen at the part contacting the power supply and the current passing through, and local tissues at the electric inlet and outlet are burned. In mild cases

Common sense of using electric shock gun

It is composed of integrated high-quality integrated block and rechargeable nickel hydrogen battery; The main external structure is mainly composed of ABS hard rubber injection molding and metal mater