outsider308
outsider308.bsky.social
outsider308
@outsider308.bsky.social
Amateur mobile photography enthusiast, Physics teacher
Plane Harmonic Wave: Visual Guide
A compact teaching package for university-level physics courses.
Include a MP4 video (without text), so you can add your own titles or subtitles as needed. Ideal for classroom teaching, online courses, or science presentations.
czma.gumroad.com/l/ppcgp
September 1, 2025 at 3:28 PM
As the damping increases, the resonance amplitude decreases rapidly. Under the condition of fixed damping, qualitatively, the closer the frequency 𝜔 of the external driving force is to the intrinsic frequency 𝜔_0 of the system, the larger the steady state amplitude is.
July 26, 2025 at 2:57 AM
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女儿参加完闺蜜大吐槽聚会,一回到家就跑楼上抱住我说,她很幸运有我们这样的父母。我的眼泪不知不觉落下来,笑着告诉她我们也很幸运有她这样的孩子,“而且,你使妈妈进化成一个更好的人,更加耐心,更加宽容,更加平和。”她听了,很高兴地说Yeah~
February 17, 2025 at 9:19 PM
The grating diffracted light intensity is distributed with the diffraction angle, with different colours representing different wavelengths. The animation parameter is the grating constant, which varies from large to small.
December 25, 2024 at 4:13 AM
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乌克兰总统泽连斯基:”我重申,世界上任何领导人都无权在乌克兰缺席的情况下与普京谈判。我们从来没有授权给任何人。乌克兰是受害方。无论任何人,发起讨论乌克兰应该如何生存都是不公平的。“
🇺🇦👀 Zelensky: "I insist that no leader in the world has the right to negotiate with Putin without Ukraine. We have never delegated this mandate to anyone. We are victims. It would be unfair if everyone started talking about how the country should live."
December 18, 2024 at 10:40 AM
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中国医生最受人欢迎的就是这种信口开河的网红,还被认为是“有良心”。
December 16, 2024 at 2:20 AM
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“人类最大的悲剧之一,是道德被宗教所绑架。因此在现实中人们认为,宗教和道德具有必然的联系。然而,道德的基础实际上是非常简单的,根本不需要宗教。” ——亚瑟.C.克拉克 born OTC 1917
"One of the great tragedies of mankind is that morality has been hijacked by religion. So now people assume that religion and morality have a necessary connection. But the basis of morality is really very simple and doesn't require religion at all."

-- Arthur C. Clarke, born #OTD 1917
December 16, 2024 at 11:39 AM
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物理规律是发现,解释它们的数学工具是发明。量子力学的物理规律是发现,矩阵、波动方程、路径积分这样研究量子力学的数学方法就是发明了。
November 29, 2024 at 9:31 PM
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爱因斯坦在题为 “关于理论物理学的方法” 的演讲中表示, 像理论物理学这样的科学体系是 “发明”; 美国物理学家温伯格在《解释世界: 现代科学的发现》一书中则认为, 现代科学是在研究自然的漫长征程中, 经过不断尝试才 “发现” 的一种最适合自然的探索方式。 科学究竟是 “发明” 还是 “发现”? 我的看法是爱因斯坦和温伯格的综合 (这不是耍滑头, 一来是这两人中的任何一位在这种话题上都不太可能全错, 二来是这两人的说法本身就显示了不同的侧重点, 从而理应综合): 现代科学是用 “发明” 出来的理论体系, 来描述 “发现”——并且这种做法本身也是一种 “发现”。
November 29, 2024 at 3:35 AM
Two illustrations of irreversible process
November 29, 2024 at 4:33 AM
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这个总结表明基督教最不要脸了。圣经里对不信神的可都是残忍对待。佛教也根本没有“保佑”一说,那是无知民众想象出来的。伊斯兰恐怖袭击大多都是因为政治、领土、种族原因(极端基督恐怖分子才因为宗教原因杀人),很多穆斯林为主的国家都有其他族群公民,谁被要命了?参观道观的非道教信徒谁被叫滚了?造谣、胡说八道、污蔑他教就是华人基督徒的特点。
November 24, 2024 at 1:55 PM
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卡尔.萨根《魔鬼出没的世界》:“最可悲的历史教训之一是:如果我们被欺骗的时间太长,我们往往会拒绝任何受骗的证据。我们不再有兴趣找出真相。欺骗已经俘获了我们。承认我们受骗了,甚至对我们自己来说,都太痛苦了。一旦你让骗子控制了你,你几乎永远无法走出来。”
November 21, 2024 at 7:50 AM
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霍金论科普的意义:「科学已极大地改变了我们的生活, 未来还将改变更多。 如果我们想以民主的方式决定社会走向, 让公众对科学有某种理解是必须的。」
November 20, 2024 at 12:07 PM
First post as a trial
November 15, 2024 at 4:08 AM