物理世界很精彩：一起跟Stephanie老師用英語學物理！
提起物理，很多童鞋立馬進入“仰望”狀態(tài)，總覺得這是一門高深莫測的學科，其實它跟我們?nèi)粘Ｉ钪幸姷降暮芏喱F(xiàn)象都有關系。為此Stephanie老師精心推出《用英語學物理，用物理看世界》節(jié)目，除了讓我們了解到一些物理學常識，用淺顯的英語講述物理，也會讓我們了解到很多物理詞匯，對于想要深入鉆研的同學也很有幫助。
關于Stephanie老師：熱愛物理，熱愛生活，費因曼的忠實粉絲；相信任何深奧的物理理論都有一個不違背我們常識而且不那么傻里傻氣的出發(fā)點。
關于《物理的世界觀》：本書兩位作者Larry D. Kirkpatrick和Gerald F. Wheeler都是美國的物理學教授，這本書的目標是為那些其主修領域并非科學、數(shù)學或工程的學生提供物理學導論的概念性課程。 你將會了解以前從未注意過的整個世界。你將永遠也不會走過街道、開著汽車、或看著鏡子而沒有自然而然地看到額外的空間。因此，歡迎來到可能是你們的生命中最具挑戰(zhàn)性（而且最具回報性）的課程。當你學習它并最終領悟以后，這種體驗將永遠改變你的世界觀。
本期主題：描述運動
Why Start Our Discussion with Motion 為什么從運動開始討論
A property common to everything in the Universe is change. Some things are big, some are small, some are red, some have no color at all; some are rigid, some are fluid; but they all are changing. In fact, change is so important that the concept of time would be meaningless without it.
Change even occurs where seemingly there is none. Water evaporating, color fading, flowers growing, and stars evolving are all examples of changes that are beyond our casual observations. Also beyond our sensations is the fact that these changes are a result of the motion of material, often at the submicroscopic level. Because change—and thus motion—is so pervasive, we begin our exploration of physics world view with a study of motion.
Within our commonsense world view we generally group all motions together, simply observing that an object is moving or that it is not moving. Actually, there is an extraordinary diversity of motion, ranging from the very simple to the extremely complicated. Fortunately, the complex motions—ones more common in our everyday experiences—can be understood as combinations of simpler ones. For example, the earth’s motion is a combination of a daily rotation about its axis and an annual revolution around the sun. Or, closer to home, the motion of a football can be treated as a combination of a vertical rise and fall, a horizontal movement, and a spinning about an axis.
We therefore begin our discussion of motion by trying to describe and understand the simplest kinds of motion. This will yield a conceptual framework within our world view from which even the most complicated motions, such as those associated with a hurricane or with a turbulent waterfall, can be understood.
