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所在平台: Coursera |
课程主页: https://www.coursera.org/learn/eclipse
课程评论：没有评论
课程名称：《太阳与2017年8月的日全食》 课程概述： 日全食是您所见过的最壮观的景象之一！在全食期间，天空中会出现一个黑洞，取代了原本的太阳，粉色的太阳耀斑和长长的银色日冕呈现在天空中，气温骤降，动物的行为也会变得异常。人们欢呼、尖叫并为这次经历欢庆，终生难忘。科学上，日全食同样重要，它让我们能够观察到太阳大气的某些部分，通常是看不见的。此外，日全食为我们提供了测试爱因斯坦关于物质可以弯曲空间的预测的机会。2017年8月21日，美国将在40年来迎来最佳的日全食。 该课程的两个主要目标： 1) 激发您对即将到来的日全食的热情，并帮助您和社区安全观看。 2) 提供一个关于太阳科学和光物理学的友好概述。 如果您最感兴趣的是准备观看日食，可以直接进入第5周。如果您希望获得完整的课程体验并了解8月21日您将看到的科学背景，请从第1周开始逐步学习课程！ 总的来说，该课程将帮助您： * 安全观看日全食或部分日食 * 帮助他人安全观看，甚至通过带领社区日食观测活动获得收入 * 复习基础的太阳科学，包括光的物理学、天文学家如何研究太阳、太阳的形成、我们如何知道太阳内部的构成，以及支撑地球生命的能量来源 课程大纲： 1. 引言：太阳与日食 - 描述日食的成因、怎么在某个地方经历全食是多么罕见，并强调2017年8月21日全食的重要性。 2. 我们对太阳的了解大多来自光 - 解释天文学家如何利用可见光和不可见光（紫外线和X射线）研究太阳，学习光的特性如何帮助我们确定太阳的温度和成分。 3. 太阳是如何运作的？是什么让它发光？内部是什么样的？ - 探索如何通过推测或观察来了解太阳的核心，认识到其中产生的巨大能量是如何支持地球生命的。 4. 太阳是如何形成的？ - 解释在45亿年前，太阳形成的过程与哈勃太空望远镜拍摄的美丽气体云图像的关系。 5. 2017年8月21日的“伟大美国日全食” - 该周的内容集中介绍2017年8月21日伟大美国日全食期间将会发生的事情，您可以单独观看这一周的内容，或在完成1-4周后进行学习。 课程将为您提供详细信息，帮助您充分准备，享受这次不可错过的天文盛事！
Name:Introduction to the Sun and Eclipses
Description:In this module we describe what causes eclipses, how rare it is for any one place to experience a total eclipse, the dramatic difference between a total or a partial eclipse, and encourage you to see the total eclipse on Aug. 21, 2017. We also review the upcoming course topics, demonstrate how large the sun is, and introduce sunspots.
Name:Most of what we know about the Sun is learned from Light
Description:In this module we explain how astronomers use visible and invisible light (ultraviolet and X-rays) to study the sun. We learn that all light comes from atoms, and that the quantum world of atoms is like nothing you’ve ever seen! We see how the properties of light let us determine the sun’s temperature, its composition, and the important role of its magnetic fields.
Name:How does the Sun work? What makes it shine? What’s inside?
Description:We can’t see inside the sun with visible light, but there are ways to infer or even see down to the sun’s center, where vast amount of energy are generated, making possible life on earth.
Name:How did the sun form?
Description:When you look at Hubble Space Telescope images of beautiful clouds of gas in space you are seeing what happened in our own solar system 4 ½ billion years ago when the sun formed. This week we explain how that process works.
Name:The Aug. 21, 2017 “Great American Total Solar Eclipse”
Description:This Week 5 presentation concentrates on what will happen during the Great American Eclipse of Aug. 21, 2017. It may be viewed alone, or after Weeks 1-4. Weeks 1-4 give a lot of explanation of what you will see, so I hope you take the full course, but if you are in a hurry, this week alone will prepare you.
A total eclipse is one of the most spectacular sights you can ever see! It looks like the end of the world may be at hand. There is a black hole in the sky where the sun should be. Pink flames of solar prominences and long silver streamers of the sun's corona stretch across the sky. It gets cold, and animals do strange things. People scream and shout and cheer, and remember the experience their whole life. But total eclipses are important scientifically as well. They let us see parts of the sun’s atmosphere that are otherwise invisible. A total eclipse presented the first chance to test Einstein’s prediction that matter can bend space – like near a black hole. The best total eclipse in the United States in 40 years happens August 21st, 2017. This course has two primary goals: 1) to get you excited for the total solar eclipse coming in August 2017 and prepare you and your community to safely view it 2) to provide an inviting overview of the science of the sun and the physics of light If you are most interested in preparing for the eclipse, you can hop right into Week 5! If you want the full course experience, and to get some fun scientific context for what you'll be seeing on August 21st, start with Week 1 and move through the course week by week! [Note: if you start with Week 1, you can skip through some of the repeated material once you get to Week 5.] Overall this course will prepare you to... * Safely view the total or partial solar eclipse * Help others watch safely and even make money by leading a “neighborhood watch” of the eclipse * Review fundamental sun science, including the physics of light, how astronomers study the sun, how it formed, how we know what’s inside it, and where the energy that supports life on earth is generated
