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怎样制作一个真正的隐身斗篷

What Would It Take To Make A True Invisibility Cloak?

嗨 看这里
Hi, there!
欢迎观看诺金生活
Welcome to Life Noggin.
实话实说
Let’s be honest.
在过去的十年甚至更久
For the past ten years or so
我们都想成为女巫或者魔法师
we’ve all wanted to be witches or wizards.
我的意思是学习咒语 和蛇一样恶毒的人战斗
I mean learning spells and fighting evil snake-like people
实在是太棒了
would be awesome.
但是我真的觉得隐身衣可以成为现实
But I also really want invisiblity cloaks to be real.
尽管我并不需要
I don’t need one though
因为我的制作者可以让我随时消失 只要他愿意
since my animator can make me invisible whenever he wants.
这确实是一个可怕的想法
That’s a scary thought actually.
但是对人类来说拥有隐身衣是一件很酷的事情
But it would be a cool thing for humans to have.
信不信由你
And believe it or not
科学家们正在努力 让这些梦想越来越接近现实
scientists are getting kind of close to making these dreams come ture.
你甚至没必要
And you don’t even have to live
去一个主要的版权电影特许经营地体验它
in a major copyrighted movie franchise to experience it.
关键在于改变物体反射光线的方式
The key is distorting the way light bounces off an object.
当光线进入我们的眼睛 我们才能看到东西
We are able to see things when light reaches our eyes.
光线可以由一个物体发射
That light can be emitted from an object
比如太阳
like the sun
或者光线也可以通过物体的反射进入你的眼睛
or it can enter your eye by bouncing off an object.
比如一个大的离谱的苹果
Like this ridiculously large apple.
如果我们想把这个苹果藏起来
If we want to hide this apple
我们只需要改变
we just have to change the way that
光线在它表面分散反射的路线
the light gets scattered off its surface.
然而说的容易做起来难
But that’s much easier said than done.
要知道 如果要这样做
See, to do this
我们需要用到一种叫做超材料的材料
we need to use something called a metamaterial.
这是一种结构具有延展性的材料
Which is a material whose structure makes exhibit properties
但这种延展是需要人为塑造的
that don’t occur naturally.
举个例子 比如隐身
Like invisiblity, for example.
一个研究团队创造了一种超材料来达到目的
A team of researchers created a metamaterial to do this
用它包装一个三维物体
which wraps around a three dimensional object
就像一件隐身衣那样
just like a cloak would.
但是别期待这种材料能够保暖
But don’t expect this metamaterial to keep you very warm.
因为它只有80纳米的厚度
Because it is only 80 nanometers thick.
这么解释吧
To put that into perspective
一毫米等于一百万纳米
there are one million nanometers in a single millimeter.
所以这种材料薄的惊人
So this material is incredibly thin.
为了让它产生特定的效果
To actually make it work
它被包在微型的不同大小的
it’s covered in tiny brick-shape gold antennas
砖形黄金天线中
of different sizes
目的是控制光线分散反射的路径
to control how the reflected light gets scattered.
当研究小队使用了
And when the researchers use the light
波长730纳米的光时
with a wavelength of 730 nanometers
这个被材料包着的物体反射的光线
the light reflected off the cloaked object
仿佛是一个平面镜
as if it were a flat mirror instead.
理论上讲 你可以调整这件隐身衣
Theoretically, you can tune the cloak
以至于能够表现出目标物体消失不见
so it shows the object’s background
或者完全变成其他的东西
or even something else completely
比如这个巨大的苹果可以被看成小洋白菜
like this giant apple could now be a giant brussel sprout.
很少有人想去吃它
Very few people would want to eat it.
但是居然能够做到这样
But it could be that!
但令人沮丧的是 这项技术现在还
But sadly this technology is still
远远没有达到能将人隐形的程度
far away from actually concealing a person.
首先 它仅仅能够隐藏非常小的物体
For starters, it’s only able to conceal very tiny objects.
所以你或者其他巫师
So you or a particular boy wizard
仍然能被看见
were still be very visible.
其次 在一系列波长的光照射下 这种材料才能有效果
And it would also have to work for a wide range of wavelength.
并不是一种光
Not just one.
还有一个问题
Oh, and there’s also the issue
为了真正地隐藏起来
that in order to actually be hidden
你必须站在那里 绝对静止
you have to be standing completely still.
如果你动了
If you moved
这种幻觉将会消失
the illusion would no longer work.
格兰芬多减五分
Minus 5 points for Gryffindor…
我可以说 那个
…Can we say…that?
不行吗
No?
没关系
Never mind.
所以 还有什么办法能隐形呢
So, are there any other ways to become invisible?
好的 如果你想在可见光下隐形
Well, if you want to be hidden from visible light
你同样可以用标准镜头来隐身
you could also hide yourself using standard lenses.
但是这种方法只有从几个特定的观察角度使用时才有效
But it would only work for a few viewing angles
并且镜头很笨重
and it’s pretty bulky.
所以很不幸 没有隐身衣
So no cloak, unfortunately.
所以 到底还有什么办法隐形呢
So, are there any other ways to become invisible?
举个例子 比如雷达
Like radar, for example.
当然 你或者军用飞机对于任何人仍然
Granted, you or a military plane would still be
是可见的
visible to anyone watching
但是对于雷达系统
but to a radar system
它几乎没有察觉是很有可能的
it’s possible to go virtually unnoticed.
如今 有很多方法能达到这个效果
Now there are lots of ways to do this
但是和隐身衣最相似的一种方法
but the one most similar to an invisiblity cloak
是用一种吸收雷达超声波的材料涂在飞机表面
is a radar-absorbing material that coats the plane
比如球铁漆(超声波吸收材料)
like iron ball paint.
基本上 任何传入的雷达信号到达飞机时
Basically, any incoming radar signals that reach the plane
都被当做热量散发掉
are dissipated away as heat.
这是因为在这些材料上发生了一些复杂的物理现象
Thanks to some complicated physics going on in the material.
但不幸的是 你是一个人
But sadly, you are a person
而不是一架飞机
and not a plane
并且雷达不能够把你隐藏起来
and radar isn’t what you trying to hide from.
至少我觉得它不行
At least I think it’s not.
到目前为止 这项研究的未来是光明的
The research so far is promising.
但是很大程度上我们需要一段很长的时间
But it’s probably going to be a very long time
我们才能真正地拥有一件隐身衣
until we actually have a true invisiblity cloak.
但是现在还处于起步阶段 对吗
But baby steps, am I right?
你想要什么科幻或者奇幻科技成为现实呢
What Sci-Fi or fantasy technology do you want to be real?
让我看看下面的评论区
Let me know in the comment section below.
这集视频 以及我们所有视频的大多数
This video, as most of our videos are
是由才华横溢的凯丽·尤卡斯编写的
was written by the wonderful and talented
她是诺金生活的头号写手
head-writer of Life Noggin, Kaylee Yuhas.
她制作了一个哈利波特的视频
She made a Harry Potter theme video
讨论这个世界中一些奇怪的生物
talking about some of the weird creatures in the world.
你一定要去看看
And you have to check it out!
不幸的是 作为像我一样的哈利波特迷
But sadly for Harry Potter funs like myself
在现实世界中
in the real world
路威很有可能只有两个头而不是小说中的三个
Fluffy would probably only have two heads and not three.
但它仍然很可怕
Still intimidating.
仅仅降低了一些可怕程度
Just a little bit less.
然后 同样有一个事实
But then there is also the facts that
路威和一系列类似阿拉格多八眼巨蛛的
Fluffy and a bunch of other creatures like
其他的生物
Aragog the acromantula
都是巨型体型
are giants
大家都去看一下给她一些鼓励
Go show her some love.
这项研究目前为止前途很光明
The research so far is promising.
如果你正在使用平板 在描述文字中有相关的链接
There’s a link in the description if you are on mobo.
一如既往 我是Blocko
As always, I am Blocko.
这就是今天的诺金生活
This has been Life Noggin.
不要忘了
Don’t forget…
继续思考
…to keep on thinking.

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视频概述
听录译者

WeiRan

翻译译者

【请假】杨小阳

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视频来源

https://www.youtube.com/watch?v=kD-ue0A-i2w

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