数学&物理&杂项
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数学&物理&杂项
1.78K subscribers
数学&物理&杂项
https://youtu.be/KTzGBJPuJwM
YouTube
But why would light "slow down"? | Visualizing Feynman's lecture on the refractive index
How the index of refraction arises, and why it depends on color (as seen with a prism)
Quotebook Notebooks: https://3b1b.co/store
These lessons are primarily funded directly by viewers: https://3b1b.co/support
An equally valuable form of support is to simply…
数学&物理&杂项
https://youtu.be/lKXW7DRyyro
YouTube
Div, Grad, and Curl: Vector Calculus Building Blocks for PDEs [Divergence, Gradient, and Curl]
This video introduces the vector calculus building blocks of Div, Grad, and Curl, based on the nabla or del operator. These operators encode physically intuitive notions of rate of change, local divergence, and local rotation.
@eigensteve on Twitter
eigensteve.com…
数学&物理&杂项
https://youtu.be/1UTjWy-vnOo
YouTube
I Gave the MIT Commencement Speech
数学&物理&杂项
https://www.ft.com/content/d5f91c27-3be8-454a-bea5-bb8ff2a85488
数学&物理&杂项
https://youtu.be/kyQP4t_wOGI
YouTube
Soft Body Physics Explained
While it’s physically impossible for a rigid body to exist in real life, it presents a simplicity that makes it convenient and optimal to use as a representation of most hard objects. Soft bodies take care of what rigid bodies lack the capability to represent…
数学&物理&杂项
https://youtu.be/UpeomYqkJQ0
YouTube
How is AI impacting science?
Session: How is AI impacting science?
Speaker: Michael Nielsen, Research Fellow, Astera Institute
Abstract: In this talk I survey the ongoing impact of the AlphaFold 2 system on science. This is a deep learning system which in blind assessment has routinely…
数学&物理&杂项
https://youtube.com/playlist?list=PL682UO4IMem8pzRxMDHM7jopVFAQsqqCa
数学&物理&杂项
https://youtu.be/K09erFsOnxA
YouTube
Distinguished Colloquium: Vladlen Koltun, Sept 12, 2023
Title: A Quiet Revolution in Robotics
Bio: Vladlen Koltun received his PhD in 2002 and has worked across multiple fields of computer science. He has mentored more than 50 PhD students, postdocs, research scientists, and PhD student interns, many of whom…
数学&物理&杂项
https://www.10xgenomics.com/resources/analysis-guides/differential-gene-expression-analysis-in-scrna-seq-data-between-conditions-with-biological-replicates
10x Genomics
Differential Gene Expression Analysis in scRNA-seq Data between Conditions with Biological Replicates - 10x Genomics
This article introduces various bioinformatics methods (including pseudobulk, mixed-effects model, and differential distribution testing) for performing differential gene expression analysis between conditions using single cell data.
数学&物理&杂项
https://youtu.be/Rqv3cXt8ZNU
数学&物理&杂项
https://www.youtube.com/watch?v=6tUbddu7CYU
YouTube
Tornadoes: Mathematics and Physics Behind Their Power
Tornadoes are produced when two differing air masses meet. Most tornadoes form during supercell thunderstorms from an intensely rotating updraft. According to the National Weather Service, a tornado is “a violently rotating column of air attached to a thunderstorm…
数学&物理&杂项
https://youtu.be/wjZofJX0v4M
YouTube
Transformers (how LLMs work) explained visually | DL5
Breaking down how Large Language Models work
Instead of sponsored ad reads, these lessons are funded directly by viewers: https://3b1b.co/support
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Here are a few other relevant resources
Build a GPT from scratch, by Andrej Karpathy
https://youtu.be/kCc8FmEb1nY…
数学&物理&杂项
https://youtu.be/fk2r8y5TfNY
YouTube
Miles Cranmer - The Next Great Scientific Theory is Hiding Inside a Neural Network (April 3, 2024)
Machine learning methods such as neural networks are quickly finding uses in everything from text generation to construction cranes. Excitingly, those same tools also promise a new paradigm for scientific discovery.
In this Presidential Lecture, Miles Cranmer…
数学&物理&杂项
https://arxiv.org/abs/2404.13867
arXiv.org
Stochastic waveform estimation at the fundamental quantum limit
Although measuring the deterministic waveform of a weak classical force is a well-studied problem, estimating a random waveform, such as the spectral density of a stochastic signal field, is much...
数学&物理&杂项
https://arxiv.org/abs/2404.17625
arXiv.org
Alice's Adventures in a Differentiable Wonderland -- Volume I,...
Neural networks surround us, in the form of large language models, speech transcription systems, molecular discovery algorithms, robotics, and much more. Stripped of anything else, neural networks...
数学&物理&杂项
https://skeptics.stackexchange.com/questions/55940/did-richard-feynman-say-that-if-all-of-mathematics-disappeared-physics-would-be
Skeptics Stack Exchange
Did Richard Feynman say that if all of mathematics disappeared, physics would be set back by exactly one week?
The following quip is often attributed to the physicist Richard Feynman:
If all of mathematics disappeared, physics would be set back by exactly one week.
See for example Quote Master, quotefancy...
数学&物理&杂项
https://youtu.be/R6G1D2UQ3gg
YouTube
Brain Really Uses Quantum Effects, New Study Finds
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When Roger Penrose originally came out with the idea that the human brain uses quantum effects in microtubules and that was the…
数学&物理&杂项
https://youtu.be/6Aab3k2nsOY
YouTube
LET THERE BE... Voltage? | Maxwell's Equation #2 Explained for Beginners
The second Maxwell Equation made simple!
Hey you lot, I'm back with possibly my longest physics video yet - hopefully it's digestible haha! A lot of you enjoyed my previous video on one of Maxwell's Equations of Electromagnetism (check it out here: htt…
数学&物理&杂项
https://youtu.be/mZck0N_T9Cs
YouTube
And this year's Turing Award goes to...
Support us on Patreon: https://www.patreon.com/Polylog
We explain why Avi Wigderson got this year’s Turing award: We show how you can make any randomized algorithm deterministic.
0:00 Intro
2:41 P = BPP
5:38 Statistical tests
7:52 Pi as a PRNG
9:44 Nisan–Wigderson…
数学&物理&杂项
https://youtu.be/W3I3kAg2J7w
YouTube
What "Follow Your Dreams" Misses | Harvey Mudd Commencement Speech 2024
I had the pleasure of being invited to give Harvey Mudd's commencement speech this year.
Reposted here with permission from the University
Timestamps:
0:00 - End of Harriet Nembhard's introduction
0:45 - The cliché
2:28 - The shifting goal
5:57 - Action…