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什么是物理学 – 译学馆
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什么是物理学

What is Physics?

What makes physics so cool?
什么使物理学这么酷?
To me, physics is awesome and interesting
对于我来说 物理学简直摄人心魄
because it asks the one question no other
因为它提出了一个其他
[physical]science does:
(自然类)科学未提及的问题:
“how? “
“什么原理?”
Physics looks at how things happen
物理学着眼于事物如何发生
-the reason things happen-and explains it.
发生的原因 并解释现象
No other [physical] science does this.
其他(自然类)科学并非如此
Chemistry deals with the result of things happening
化学研究事情发生的结果
while biology deals with why things can happen,
而生物研究事情发生的原因
but physics deals with the how things happen.
但是物理研究事情发生的方式
Take, for instance, a moving car.
例如 一辆行驶的汽车
A biologist would look at a moving car
生物学家看到一辆行驶的汽车
and wonder “why is it able to move?”
会思考“为什么它能移动?”
He would probably ask himself,
他可能会问自己
“What is it about the way those parts work together
“这些零件是怎么相互配合
that make it go forward? Why is it able to happen?”
什么促使它向前移动?为什么会这样?”
A physicist, on the other hand, sees a moving car and wonders
相反 物理学家看到正在行驶的汽车
” How can the car move?
不禁好奇“汽车如何移动?
What is providing a forward motion?
向前的动力来自哪里?
How are the wheels even able to turn?”
轮子怎么能转动呢”
And, on the other end of the spectrum,
另一方面
we have a chemist who would probably see a moving car and
我们的化学家看到行驶的汽车
wonder what would happen if he threw sulfuric acid in the tank.
则思考 如果把硫酸扔进油箱会发生什么
But what is physics?
那么 什么是物理学?
Well, the ultimate goal of physics is to understand
物理学的终极目标是了解
the universe around us.
我们周围的宇宙
This ranges from tiny, inter-molecular particles,
这小到微小的分子间粒子
to huge things like entire solar systems.
大到整个太阳系
Physics argues that there must exist fundamental rules that
物理学认为我们周围的现象都有规律可循
govern the how of everything around us,
支配着我们周围的一切
and it is physicists’ job to find out
而物理学家的工作是演算出
what those rules are and apply formulas to them.
这些公式 并且应用它们
It is really fascinating how much we already know,
有趣的是我们已经知道了很多
yet mindboggling how much we don’t.
但未了解的多到令人难以置信
Such simple mechanics, such as
简单的力学 例如
Newton’s famous “force equals mass times acceleration”
牛顿著名的“力等于质量乘以加速度”
equation can help scientists understand the basic motion of nearly anything.
帮助科学家了解几乎任何事物的基本运动
So, I’m here to teach you guys these principles, too.
所以 我也是来教你们这些原则的
That answers what the basic goal of physics is,
这回答了物理学的基本原则是什么
but doesn’t answer what we actually do in physics.
但没有回答我们研究物理时具体做什么
Well, in its simplest form, physics is “applied mathematics.”
物理学最简单的形式是“应用数学”
Now, you’ve probably heard the term “applied something” before,
现在 你可能之前听过短语“应用某物”
but I’m not sure you know what that really means.
但我不确定你是否真的知道这意味着什么
To answer that, think about a toolbox.
要回答这个问题 好比一个工具箱
Essentially, all of the math you’ve learned since elementary school
基本上 你从小学开始学的所有数学
are tools that were put into this toolbox.
都是放在这个工具箱里的工具
We all start off with an empty toolbox,
我们都是从一个空的工具箱开始的
and as we get older and learn more complicated math,
随着年龄的增长和学习更复杂的数学
we sort of “buy and learn how to use” new tools.
这有点像“购买并学习如何使用”新工具
By the time we hit physics,
当我们学习物理学时
we have a good set of tools
我们有一套工具
that we’re very familiar with using.
并且非常熟悉如何使用
But, we never really used them before.
但是 我们以前从未真正的使用过它们
See, mathematics is the class that teaches you what the tools are
你看 数学课教会你工具是什么
and refine your ability to use them.
并提高你使用工具的能力
But, you never truly use them.
但是 你永远不会真正使用它们
So, what’s the purpose of knowing these math concepts?
那么 了解这些数学概念的目的是什么?
Well,
那么
what’s the purpose of owning and learning how to use tools?
拥有并学习如何使用工具的目的是什么?
To build things!
为了建造东西!
In physics,
在物理学中
we take the tools that we’ve learned in our math classes
我们把数学课上学到的工具
and apply them to real world problems.
运用到实际问题中
For example,
例如
if we want to find out
我们想知道如果
how high a ball that was thrown upwards will travel,
一个被抛向上的球会飞多高
we can use the algebra
我们可以使用
that we learned nearly two years ago so figure it out.
近两年前学过的代数计算出来
All physics really is just applying,
所有的物理学实际上都只是应用
or should I say finally using
或者说是最终使用
all of the tools you’ve accumulated throughout your education
你在整个教育过程中积累的经验
to figure out the way the world behaves.
来解释世界运动的方式
Now, physics has a bad reputation as
现在 物理学广受差评
being one of the hardest sciences you can take in high school.
作为高中最难的学科之一
This can be true,
这是真的
but I believe every concept can be broken down and simplified.
但是我相信每个概念都可以被分解和简化
That’s why I’m here to teach you guys the wonders of physics!
这就是我来教你们物理学的原因!
From the fundamental Newtonian equations to
从牛顿基本方程到
to the famous e=mc^2, together we will embark on a journey
著名的e=mc^2我们将一起踏上旅程
to better understand the world around us.
去更好地了解我们周围的世界
So, take a step back,
所以 退后一步
and prepare to see the awesomeness that is the world of physics.
准备好领略物理学世界的神奇吧

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简单介绍了物理学是什么

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