In any country, passengers are informed when flying
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| While flying, passengers using personal electronic devices generate electromagnetic radiation that emits broad-frequency electromagnetic waves. (Photo: talgov) |
are prohibited from using any electronic products on the aircraft. Why is this necessary?
When an aircraft is in flight, it is impossible to rely on visual observation alone; instead, it must depend entirely on electronic machinery to navigate and control. Flight parameters such as altitude, aircraft direction, and ground-based navigation systems require radio waves for proper guidance to ensure the aircraft flies correctly. Any errors in electronic devices or ineffective ground navigation signals could jeopardize flight safety, potentially leading to accidents.
The size of electronic devices in modern aircraft is continually decreasing, typically operating on low voltage and becoming more sensitive to electromagnetic wave interference. If passengers use personal electronic devices while flying, such as mobile phones, gaming consoles, even electric razors, hair dryers, radios, etc., they will also emit electromagnetic radiation that produces broad-frequency electromagnetic waves. There are numerous electronic machines on the aircraft, and navigation information devices all operate within the electromagnetic wave frequency range. These electromagnetic waves can interfere with and blend into the normal electrical signals required for safe flight, which could render flight control ineffective, leading to severe consequences.
Due to the demand for mobile phone usage anytime and anywhere, scientists have recently developed and conducted trials of mobile phones that can be used on aircraft during flights.
