本文来自微信公众号：金捷幡，作者：金捷幡，题图来自：AI生成 物理学的降维打击链，是从宇宙最高维的理论一路退化。 它每退化一步，越接近人类的观察和对世界的理解。 但可悲的是，即使退化到最下面一层的经典理论，也有99%的人并不能真正懂。 这注定了大多数人是"愚蠢"的，那你是不是那1%呢？ 第1层：M（膜）理论 维度：11维 降维：膜是多条弦凝聚而成，把它卷成圈或压成线或用其它投影这一维的方法，它会退化成弦论。 第2层： 弦论 维度： 10维 降维： 10维=3D空间+1D时间+6D卡拉比–丘流形（这个丘是丘成桐）。 实数6D其实是复数的3D，是凡夫俗子看不到的微观高能世界，其几何性质决定了我们宇宙的基本粒子 种类和物理常数，每个不同的卡拉比–丘流形对应一种不同的宇宙。 维度：4维 狭义相对论在物体远低于光速时，退化成牛顿力学。 第4层：牛顿力学 维度：3+1维 你真的懂牛顿力学吗？（这里假装你懂绝对时空观。） 第2层弦论降维后，低能极限下看到的是连绵的表面（广义相对论的连续时空），在高能极限下看到的 则是一堆跳舞的弦（粒子）。 这次降维忽略掉这紧致化的6D，剩下我们熟悉的4D低能世界。 第3层：广义相对论 维度 ...

2025.10. 18 本文字数：3599，阅读时长大约5分钟 作者 | 第一财经 吴丹 10月18日，物理学家、诺贝尔物理学奖获得者，中国科学院院士，清华大学教授、清华大学高等研 究院名誉院长杨振宁先生因病在北京逝世，享年103岁。 就在10月1日，杨振宁友人还在社交网络发布先生103岁寿辰的现场照片。一缕阳光斜穿过玻璃窗， 将窗上"103"字样的气球与一束鲜花衬托出一片平和宁静的居家气氛。这场由清华大学邱勇书记带 着清华师生参与的低调家庭寿宴，像极了杨振宁的人生隐喻——在他一生研究的对称原理中，喧嚣与 静谧、宏大与精微，达成了百岁人生的呼应与平衡。 杨振宁说： "我这一生最重要的贡献，是帮助改变了中国人自己觉得不如人的心理作用。我想，我在 科学工作的成就，帮助中国人的自信心增加了。" 去年1月，纪录片《杨振宁：百年科学之路》在北京上映，导演之一史蒂夫·伯恩斯说，杨振宁的影 响力遍及全世界，"他取得的成就不仅仅关于美丽、复杂、开创性的物理学，还包括他对教育的坚持 和奉献。" 杨振宁的百年人生，经历了抗日战争、二战、冷战，也经历了中国从封闭、改革开放到经济腾飞的全 过程，他见证并推动着中国对科学的重新提倡，也 ...

Core Viewpoint - The discussion between Zhang Chaoyang and Xu Yihong highlights the historical development and unification of physics theories, emphasizing the importance of curiosity and creativity in advancing the field [1][3]. Group 1: Historical Milestones in Physics - 2025 marks significant anniversaries for key physics theories, including the 120th anniversary of special relativity and the 110th anniversary of general relativity, indicating major advancements in human understanding of nature [3]. - Newton unified the laws of mechanics for celestial and terrestrial bodies, while Maxwell completed the classical unification of electricity and magnetism [3]. - Einstein's contributions through special and general relativity revealed profound connections between spacetime and gravity, leading to a deeper understanding of the universe [3]. Group 2: Quantum Mechanics and Field Theory - Quantum mechanics, through Schrödinger's wave equation and Heisenberg's matrix mechanics, established a foundational framework for modern physics, culminating in the development of quantum field theory [4]. - Quantum field theory is recognized as one of the most powerful and successful theories in human history, accurately calculating atomic spectra and the electron magnetic moment [4]. Group 3: The Role of Serendipity in Theoretical Development - Important theoretical advancements often stem from existing theories that may not receive immediate attention, as illustrated by Maxwell's equations hinting at Lorentz symmetry [6][8]. - The development of new theories requires both intellectual insight and a degree of luck, as demonstrated by Einstein's timely corrections to his predictions regarding light bending [8]. Group 4: The Future of Physics and AI - Current AI capabilities are limited to processing vast amounts of data and cannot replicate human intuition in exploring physics, which remains reliant on human creativity and thought [9].

Group 1 - A research team from Vienna University of Technology and University of Vienna has visualized the "Terrell Effect" for the first time, which describes how fast-moving objects appear to rotate due to the varying light travel times from different parts of the object to the observer [1][2] - The study published in the latest issue of "Communications Physics" highlights that when a rocket moves at 90% of the speed of light, its length contracts by 2.3 times, demonstrating the phenomenon of length contraction known as Lorentz contraction [1] - The research team utilized a "time-space slow down" technique by using femtosecond laser pulses and ultra-precise time-gated cameras to effectively reduce the speed of light to 2 meters per second, allowing them to capture optical distortions of a cube and a sphere [2] Group 2 - The visualization of the "Terrell Effect" not only aids in understanding complex physical theories but also represents a successful intersection of art and science, showcasing the collaboration between artists and scientists [2] - The study indicates that the cube appears to rotate in the images captured, with its front edge becoming prominent while the back edge extends like a cape, while the sphere maintains its symmetrical shape but shows uneven light distribution on its surface [2]