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  • 常规

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  • 物理学和物理学的范围

      A large parabolic antenna used by NASA for solar system exploration communications.

    Physics is more than calculating the of billiard balls hitting each other or the acting on a speeding car’s tires. Physics includes the study of practically every form of matter and how it interacts with other matter and with in various forms. The image shows one of several large parabolic antennas that NASA physicists used for years to communicate with ships and devices completing solar system exploration missions.
    ::物理学不仅仅是计算台球相互撞击或加速车胎的动作。 物理学包括研究几乎每一种物质及其与其他物质和各种形式相互作用的方式。 图像显示美国航天局物理学家多年来用来与完成太阳系探索任务的船舶和装置进行通信的若干大型抛物线天线之一。

    Definition of Physics
    ::物理学的定义

    What is physics ? Physics is the branch of science that studies the physical world, including objects as small as subatomic particles and as large as galaxies. It studies the nature of matter and energy and how they interact. Physicists are inquisitive people who want to know the causes of what they see. How does the moon move? Why does the moon move? Why do the stars shine? Why do your hands get warm when you rub them together? Physicists, like all scientists, hope to find explanations that describe more than one phenomenon and offer a better understanding of how the universe works.
    ::物理学是什么?物理是研究物理世界的科学分支,包括小到亚原子粒子和星系一样大的物体。它研究物质和能量的性质以及它们的互动方式。物理学家是好奇的人,他们想知道他们所看到的原因。月亮是如何移动的?为什么月亮会移动?为什么月亮会闪耀?为什么星星会发光?为什么你的手会暖和呢?物理学家和所有科学家一样,希望找到能够描述一个以上现象的解释,并更好地了解宇宙是如何运作的。

    Common Misconceptions
    ::常见误解

    People commonly believe that physics is all about solving word problems and memorizing equations. While it is true that many physics classes focus on the equations, it is important to remember that the purpose of physics is less about the problems and more about using equations, laws, and theories to understand the world we live in.
    ::人们通常认为物理学完全在于解决文字问题和记忆等式。 虽然许多物理课确实侧重于方程,但重要的是要记住物理学的目的不是在于问题,而是更多地在于利用方程、法律和理论来理解我们所生活的世界。

    Summary
    ::摘要

    • Physics is the branch of science that studies matter and energy and how they interact.
      ::物理是研究物质和能源及其相互作用的科学分支。

    Review
    ::回顾

    1. Give your own definition of physics.
      ::给自己的物理定义。
    2. What do you already know about physics? What do you think you know?
      ::你对物理学已经了解多少?
    3. Physics is all around us, all the time. Give a few examples of physics you have experienced.
      ::物理学一直围绕着我们 举几个你经历过的物理学的例子

    Explore More
    ::探索更多

    Use the resource below to answer the questions that follow.
    ::利用以下资源回答以下问题。

    1. Why can’t Hadfield dip the washcloth in a bag full of water?
      ::为什么哈德菲尔德不能把毛巾浸在装满水的袋子里?
    2. Pause the video at 1:55. What do you expect will happen as he wrings out the washcloth?
      ::1点55分暂停录影带 你期望他把毛巾拔出来后会怎么样?
    3. What does the water do? Why?
      ::水是做什么的 为什么