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比尔·奈科学问答:时间是真实的吗? – 译学馆
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比尔·奈科学问答:时间是真实的吗?

‘Hey Bill Nye, Is Time Real?’ #TuesdaysWithBill

Alicia: 你好Bill! 我叫Alicia 我想知道 你认为时间是真实的吗?
Alicia: Hello Bill, my name is Alicia, what I would like to know is, do you think time is real?
比方说 有时候我们会觉得一小时很短 有时候又觉得很漫长
For example, sometimes an hour can feel very short and sometimes it can feel very long
完全靠我们感觉
depending on your perception.
难道说时间是主观的吗?
So then is time subjective?
如果它是一个计量单位 那么它衡量的是什么东西?
If it’s a measurement of something what is it a measurement of?
我很想知道你怎么看这个问题
I’d really like to know your thoughts about time.
谢谢!
Thank you.
Bill Nye: Alicia 这是好问题
Bill Nye: Alicia, that is fantastic.
首先要注意 在英语里我们除了“time”没有别的词语来表达“时间”
Notice that in English we don’t have any other word for time except time.
因为它很独特
It’s unique.
它是大自然中自由的第四维度
It’s this wild fourth dimension in nature.
这是一个维度 这是另一个维度 这是第三个维度 而时间正是第四个
This is one dimension, this is one dimension,this is one dimension and time is the fourth
维度
dimension.
我们不仅在理论物理学里称时间为第四维度 在工程学里也是如是称谓
And we call it the fourth dimension not just in theoretical physics but in engineering.
我以前研究四维自动驾驶仪 你可以指挥去哪里
I worked on four dimensional auto pilots so you tell where you want to go and what altitude
海拔是多少 以及你什么时候想到达那里
it is above sea level and then when you want to get there.
你想什么时候到都可以
Like you can get there at any time.
我们有一大堆词语可以形容某段时间
We have a whole bunch of other words.
比如 预约
We have appointments.
我们有早晨 下午 晚上或中午时间
We have morning, afternoon, evening, noon time.
我们有这么多词形容时段 但当我们要表达“时间”本身时
We have a whole bunch of words describing periods of time, but when it comes to actual
却独独这么一个词 实在是很奇怪很让人吃惊的事情
time we just have this one word it’s a strange and surprising thing.
所以在这个问题上 我的看法就是——你知道我肯定是对的——开个玩笑 我的看法是
So along this line, in my opinion, which as you know is correct, I’m kidding, in my opinion
时间既主观又客观
time is both subjective and objective.
我们在科学 工程学 生命科学 天文学里的做法是 尽量精确地计量时间
What we do in science and engineering and in life, astronomy, is measure time as carefully
这对我们日常生活非常重要
as we can because it’s so important to our every day world.
你要种植作物 就会想知道该什么时候种植
You go to plant crops you want to know when to plant of them.
什么时候能收获
You want to know when to harvest them.
如果你想在手机上用GPS判断你在街的哪边
If you want to have a global positioning system that enables you to determine which side of
你需要既考虑平常那种时间的推移
the street you’re on from your phone you need to take into account both the traditional
就是我们在地球上看钟表得知的那个时间
passage of time that you might be familiar with watching a clock here on the earth’s
还要考虑受航天器速度影响的时间 以及
surface and the passage of time as it’s affected by the speed of the spacecraft and the passage
受地球引力影响的时间 无论是狭义相对论
of time as it’s affected by the gravity of the earth itself, both special and general
还是广义相对论意义上的
relativity.
这太惊人了
It’s astonishing.
所以我们得用各种特别的钟表来计量时间
So, we work very hard to measure time with all sorts of extraordinary clocks, but there
但毫无疑问 对于人脑这种湿化学“电脑” 我们弄乱了时间
is no question with our brains, which are wet chemical computers, we lose track of time.
有时觉得很短暂 有时候很漫长 我觉得问题本质就在于
Sometimes it feels short, sometimes it feels long and it’s just the nature I think of being
用人脑衡量时间是受限的
constrained by measuring time with our brains.
这也是为什么我们人类要制造各种仪器来衡量处于我们身外的时间
This is why we build instruments to measure time outside of ourselves externally.
但这真是个好问题
But it is a great question.
科学的整个理念都是从之前
And then the whole idea of science really started with this thing people used to call
人们称之为“自然哲学”的东西开始的
natural philosophy.
当你跟我用了“哲学”这个词 你其实就开始问这个问题:
And when you throw in the word philosophy for me you start asking this question like
你能知道所有事情吗? 更不用说时间是什么 这东西存在多久了
can you know anything, let alone what time it is or how long it’s been since something
以后会发生什么 或者会不会发生
happened or when something will happen in the future or whether or not it will happen
这些都是哲学问题
at all, these are philosophical questions.
我觉得 当你对自己说“人无法知道所有事”
I feel that you can get yourself pretty spungup in saying to yourself there’s no way to
就够让你自己纠结的了
know anything.
从哲学上来讲 你不可能无所不知
Philosophically you can’t know anything.
另一方面又似乎是 我们能很客观地了解大自然的很多事情
On the other hand, it seems to me we can know a great deal objectively about nature and
包括时间以及它的变化推移
that includes time and it’s passage.
最后 Alicia 我想到我爷爷 他不知道 也根本
One last thought Alicia, when I think about my grandfather he had no idea, no understanding
不懂相对论
of relativity.
并不是因为他是坏人 而是那时人们还未发现它
Not because he was a bad person, because no one had discovered it yet.
所以我在想 关于时间的本质 或是物理学家
And so I just wonder what else it is about the nature of time or the nature of what physicists,
天文物理学家所谓的“时空”(X,Y, Z, T四维的合称)的本质 还有些什么其他发现
astrophysicists like to call space time where you talk about these four dimensions at once
我不禁地想 关于时间也许有其他尚未发现的事实
X, Y, Z, and T. I cannot help but wonder there is something else undiscovered about time
也许用不了太久 这个发现就会被揭示
and perhaps you and I will be alive, not much more time will have passed before this discovery
而你我都还健在
is made.
继续努力吧
Carry on.
很棒的问题
Excellent question.
谢谢你
Thank you.

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视频概述

美国儿童科学节目主持人比尔·奈回答观众关于时间是否真实的问题。

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霜霜

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赖皮

视频来源

https://www.youtube.com/watch?v=br2pwBh_pio

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