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Edexcel IGCSE Physics 复习笔记 8.3.2 Doppler Shift
Edexcel IGCSE Physics 复习笔记 8.3.2 Doppler Shift The Doppler Effect Usually, when an object emits waves, the wavefronts spread out symmetrically If the wave source moves, the waves can bec...
Edexcel IGCSE Physics 复习笔记 8.3.1 The Big Bang Theory
Edexcel IGCSE Physics 复习笔记 8.3.1 The Big Bang Theory The Big Bang Theory Around 14 billion years ago, the Universe began from a very small region that was extremely hot and dense Then th...
Edexcel IGCSE Physics 复习笔记 8.2.5 Hertzsprung-Russell Diagrams
Edexcel IGCSE Physics 复习笔记 8.2.5 Hertzsprung-Russell Diagrams Hertzsprung-Russell Diagrams Stars are classified using the Hertzsprung-Russell (HR) diagram This is a plot of: The luminosi...
Edexcel IGCSE Physics 复习笔记 8.2.4 The Brightness of Stars
Edexcel IGCSE Physics 复习笔记 8.2.4 The Brightness of Stars Absolute Magnitude Astronomers measure the brightness of stars at a standard distance using the absolute magnitude scale This is ...
IB DP Maths: AI HL复习笔记5.7.2 Second Order Differential Equations
Euler's Method: Second Order How do I apply Euler’s method to second order differential equations? A second order differential equation is a differential equation containing one or more second deri...
2022年John Locke写作比赛全球论文Shortlist获奖放榜！恭喜翰林45位学员入围
“殿堂级”学术写作比赛——John Locke 2022年全球论文Shortlist获奖放榜 恭喜翰林及达文（文科学术活动独家合作品牌） 共 45 位学员成功入围 更多战绩更新中…… John Locke对学生写作要求铰高 各位同学的努力获得不菲...
Edexcel IGCSE Physics 复习笔记 8.2.3 The Life Cycle of Larger Stars
Edexcel IGCSE Physics 复习笔记 8.2.3 The Life Cycle of Larger Stars The Life Cycle of Larger Stars A large star is one that is much larger than the Sun Stars that are larger than the Sun hav...
Edexcel IGCSE Physics 复习笔记 8.2.2 The Life Cycle of Solar Mass Stars
Edexcel IGCSE Physics 复习笔记 8.2.2 The Life Cycle of Solar Mass Stars The Life Cycle of Solar Mass Stars 1. Nebula All stars form from a giant cloud of hydrogen gas and dust called a nebul...
