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为什么不能在飞机上用移动电话? – 译学馆
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为什么不能在飞机上用移动电话?

Why Can't You Use Your Phone on a Plane?

为什么不能在飞机上使用手机?
每次你登上飞机 都会听到类似的通知
Every time you hop on a plane, you hear some sort of announcement
关掉手机或者调成飞行模式
about shutting off your cell phone or putting it into airplane mode.
你或许会听从 如果还没有在座位上沉沉睡去的话
Maybe you listen, if you haven’t already conked out in your seat.
或者你无视这条规则 一直发短信 并且希望空乘没留意你
Or maybe you ignore the rule and keep texting, hoping the flight attendant won’t notice.
我的意思是 这样做的风险是什么
I mean, what’s the risk?
你和朋友额外说几句话真的会击落飞机吗
Will your extra game of Words with Friends really bring down the plane?
会的 至少理论上是这样
Well it could, at least in theory.
隐患在于便携式电子设备比如手机和平板电脑
The concern is that portable electronic devices like your phone or tablet
会产生电磁干扰
could cause electromagnetic interference
使飞机通讯或导航系统中断
that would disrupt the communication or navigational systems in the plane.
一种干扰被称为“前门”效应
One type of interference known as Front Door interference,
是说无线电波从窗户或金属框架的裂缝中泄露出去
is when radio waves leak out windows or other cracks in the metal frame,
并且被飞机外部的天线探测到
and are detected by the antennas on the outside of the plane.
这些天线是被用来和空中交通控制器或者导航卫星交流的
Those antennas are used to communicate with air traffic controllers or with GPS satellites,
因此干扰会令发送和接收这些重要信息十分困难
so it could make it more difficult to send and receive those important messages.
同样也有后门干扰 是说无线电波干扰
There’s also Back Door interference, were radio waves interfere with the signals
信号通过飞机内部的电缆 这会扰乱电子登机系统
running through the cables inside the plane, which could scramble on board electronic system.
但自1980年代以来 飞机的电子系统已经能够承受闪电
But since the 1980s, electrical systems on aircraft have been able to withstand lightning
和其他来源的电磁干扰
and other sources of electromagnetic disturbance,
这或许能够保护他们不受来自手机或是平板电脑的微量干扰的影响
which probably shields them from the tiny amount of interference from the phone or tablet.
并且手机 平板电脑 或者其他任何你可能在飞机上使用的小玩意
And no phone, tablet, or any gadget you might try to use during a flight
从未被真正证明造成了严重问题
has ever actually been proven to cause serious problems.
飞行员们曾经声称当乘客们打开某些特定的设备
Individual pilots have claimed that some of their instruments went haywire
一些仪器就会发生混乱
when passengers turned on certain devices,
但要证明这之间的因果关系非常困难
but it’s tough to show cause and effect.
大多数时候当调查员们试图再现发生问题的场景时 结果任何事都没有发生
Most of the time when investigators try to recreate the problem, nothing happened.
因此虽然可能存在一些干扰 但似乎不会经常出现
So while some interference is possible, it doesn’t seem to happen much,
并且当然不会发生一些危及航班的严重问题
and certainly isn’t causing huge problems that jeopardize planes.
但是在飞机上禁止使用手机或者不调整为飞行模式有其他的原因
But there’s another reason why cell phones and their full non-airplane mode glory are banned in flight.
回溯到1991年 那时手机基本上还像巨大的砖头
Back in 1991, when cellphones were basically giant bricks,
国家通讯委员会 或者简称FCC
The Federal Communications Commission, or FCC,
担心飞机上使用手机阻塞地面人们的手机信号
was worried about phones on planes clogging up cell signals for people on the ground.
飞机上的手机可能更接近移动信号塔 会扰乱系统
Phones up in the air might be close to a bunch of cell towers at once, confusing the system.
此外 由于飞机速度非常快
Plus, because the airplane is moving super fast,
手机将会一直连接不同的信号塔 占用宝贵的信号带宽
the phones will be trying to connect to tower after tower, taking up precious bandwidth.
虽然这已经证明并不会发生 同样是由于现在的飞机可以防护这些干扰
It turns out that doesn’t really happen, though, because again, planes these days have all that shielding.
所以使用手机很可能不会使飞机发生故障或者阻塞信号网络
So having your phone transmitting probably won’t bring down the plane or clogged up cell networks,
但你最好还是遵守这些规则 毕竟在天上你不会有太多手机服务
but you might as well follow the rules; you’re not going to get much cell service up there anyway.
感谢提问 感谢在网络上和我一起学习科学
Thanks for asking, and thanks for spending your time on the internet with me, learning about science.
如果你想要了解更多与飞机相关的内容 可以观看 为什么飞机食品这么难吃
If you wanna learn more about planes in particular, check out ‘Why Does Plane Food Taste So Bad?’,
在那个视频中我将会告诉你 为什么下次坐飞机你应该喝番茄汁
where I explained to you why you should drink tomato juice on your next flight.
结尾
*outro*

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视频概述

擅长写长句子的翻译少女,或者说只是个还没学会断句的萌新_(:з」∠)_

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收集自网络

翻译译者

王随意

审核员

霜霜

视频来源

https://www.youtube.com/watch?v=oE4LFEjFAcw

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