Recently, a novel method of grabbing tickets on the Internet has attracted widespread attention and heated discussion.Some netizens claimed that by putting their mobile phone into the rice cooker and then tapping the screen like crazy, the success rate of grabbing tickets would increase significantly. They also claimed that this was taking advantage of the Faraday cage effect.
"Science China" gave a professional and clear response to this:The metal structure of the rice cooker will indeed shield electromagnetic waves, but this shielding will make the mobile phone signal weaker and the delay higher, which will in turn reduce the success rate of grabbing tickets.
It is understood that the reason why the rice cooker is mistaken by some people as having a Faraday cage effect is mainly because it does contain a large area of metal liner or outer shell.
However, the structure of the rice cooker is not closed. Even if the lid is closed, it still has many seams, incomplete shielding, and does not have complete shielding layer thickness and grounding conditions.
Strictly speaking, a rice cooker can only produce partial, limited and uneven shielding at the physical level.
Its real function is not to filter signals, but to weaken all signals.
This means that when a mobile phone is placed in the rice cooker, not only will it not increase the success rate of ticket grabbing, but it will further reduce the originally limited opportunities to grab tickets by reducing network quality, increasing delays and risk of disconnection.
It is worth mentioning that the media has previously consulted the customer service of many well-known mobile phone brands such as Apple, Huawei, Xiaomi, and Honor on this matter. These customer service staff have made it clear that there has never been any official advice on putting a mobile phone into the rice cooker to grab tickets.