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第23讲-其他制约因素：宇宙微波背景Lecture 23 - Other Constraints: The Cosmic Microwave Background |
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| 课程网址: | http://videolectures.net/yaleastr160s07_bailyn_lec23/ |
| 主讲教师: | Charles Bailyn |
| 开课单位: | 耶鲁大学 |
| 开课时间: | 2009-11-24 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | Reasons for the expansion of the universe are addressed at the start of this lecture, focusing especially on the acceleration of dark energy. Supernovae were the first evidence for the existence of dark energy. Two other proofs are presented. The first is the Cosmic Microwave Background, which is a form of electromagnetic radiation that is perfectly smooth and equal in all directions. It firmly supports the Big Bang theory. Projects attempting to measure it, such as COBE and WMAP, are discussed. Secondly, Large-Scale Clustering is introduced: by measuring the degree of clustering, astronomers hope to advance their understanding of dark energy and dark matter. Computer simulations of the evolution of the universe are shown. |
| 关 键 词: | 宇宙膨胀; 电磁辐射; 测量聚类 |
| 课程来源: | 视频讲座网 |
| 数据采集: | 2023-04-18：chenjy |
| 最后编审: | 2023-05-13：chenjy |
| 阅读次数: | 16 |