Why can't I play with my mobile phone at the gas station?

There are many gasoline molecules mixed in the air molecules of gas stations. Due to the characteristics of gasoline, gasoline molecules volatilized into the air will be closely combined with air molecules, and will burn when encountering sparks, which will produce open flames, leading to more gasoline molecules "restlessness" and prone to explosion accidents.

Therefore, it is common sense that gas stations must ban open flames. After entering the gas station, it is forbidden to use lighters, matches and other items, and before refueling, the car is required to turn off the engine, because in addition to naked eye observation, the circuit in the car will also emit small sparks when starting, which is also one of the safety hazards.

The mobile phone we usually use emits electromagnetic waves all the time and can only receive signals through electromagnetic waves. When we answer the phone and use the internet every day, the electromagnetic wave released by electric shock will suddenly strengthen. This sudden electromagnetic wave will ionize the air and produce sparks, which is the source of the accident.

Extended data

Some gas stations are specially equipped with human static discharge devices, which are connected with the earth and can remove static electricity from the body as long as they are touched. If it is a self-service gas station, don't go back to the car when refueling, and don't put your mobile phone in the clothes pocket of the car to prevent your body from attaching static electricity again.

In the process of refueling, always hold the refueling gun in your hand, and the oil gun should reach into the tank mouth as far as possible to reduce the volatilization of gasoline during refueling and reduce the ignition medium from the source.

When the concentration of gasoline in the air exceeds 1.3% to 6%, an explosion will occur. Especially in summer, the temperature is high, the gasoline volatilizes quickly, and the gasoline concentration in gas stations is high. When it reaches a certain concentration, any tiny spark or static electricity invisible to the naked eye will cause an explosion.

Therefore, all electrical appliances in gas stations should have fire-proof and explosion-proof functions, even electric lights. However, the mobile phones (including CDMA mobile phones) currently on the market have no explosion-proof function, so the electrostatic spark will be generated at the moment when the button is pressed, which is easy to explode.

Baidu Encyclopedia-Gas Station (Disaster Hidden Danger-Mobile Phone)