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Video directory / 54
3,553 videos with summaries and linked Hacker News recommendations, arranged by title.

Turning Earth Into a Telescope | The Terrascope
Cool Worlds · 4 HN recommenders
David Kipping presents his proposed Terrascope, a telescope that uses Earth's atmosphere as a lens to achieve enormous magnification. He covers the history of telescopes and his path to the idea, plus Sol-scope and Jupiter-scope variants.

Turning Photons Into Food
Apogee Instruments Inc. · 3 HN recommenders
Dr. Bruce Bugbee walks through the calculations for crop yield potential when light is the limiting factor, from photosynthetic quantum yield through respiration efficiency and harvest index, using the Energy Cascade Model.

Turning Smashed TVs into Realistic Artificial Daylight
DIY Perks · 3 HN recommenders
DIY Perks shows how to turn old or smashed TVs and monitors into realistic artificial window lights, using the backlight and Fresnel lens to simulate distant daylight.

Turning the Sun Into a Giant Telescope with Dr. Slava Turyshev
Fraser Cain · 3 HN recommenders
Fraser Cain interviews JPL physicist Slava Turyshev about using the Sun's gravity as a lens to image distant exoplanets. They cover how the lens works, how a spacecraft would align with it, and mission design.

Turning Waves Into Particles
Huygens Optics · 2 HN recommenders
Huygens Optics explores the idea that space is a non-linear elastic medium, and uses simulations to show how wave energy might be confined locally into particle-like objects. It touches on inertia, the Schwinger limit and the vacuum as a medium.

Tutorial: New and Updated - Everything You Always Wanted to Know About Optical Networking
NANOG · 2 HN recommenders
A two-hour NANOG tutorial by Richard Steenbergen aimed at network engineers, covering optical networking technologies. This is the updated 2017 edition of a recurring talk.

Twenty Minutes of Reasons to Use the RemedyBG Debugger
Molly Rocket · 4 HN recommenders
Casey Muratori gives a fast tour of the RemedyBG debugger for Windows, which he uses daily. He shows its speed and features, especially the watch window.

TWiST #46 with David Heinemeier Hansson
ThisWeekinStartups · 3 HN recommenders
An episode of This Week in Startups in which Jason Calacanis interviews Ruby on Rails creator David Heinemeier Hansson. They discuss startups, bootstrapping and 37signals' approach to business.

Twitter and Visual Studio Rant
Molly Rocket · 3 HN recommenders
Casey Muratori responds on-stream to a dismissive Twitter post by demonstrating how slow Visual Studio's startup and debugger watch window are, comparing it to much older software and machines. It is a long rant about software performance and bloat.

Two Monkeys Were Paid Unequally: Excerpt from Frans de Waal's TED Talk
TED Blog Video · 2 HN recommenders
A short excerpt from Frans de Waal's TED talk showing a capuchin monkey fairness experiment in which two monkeys are paid unequally, one with cucumber and one with grapes. The shortchanged monkey reacts angrily.

TWO Unpickable (?) Locks for Lock Picking Lawyer!
Stuff Made Here · 3 HN recommenders
Engineer Stuff Made Here builds two new supposedly unpickable locks with different designs and sends them to the Lock Picking Lawyer to see whether they can be defeated. The video covers the novel anti-picking mechanisms.

Type 2 diabetes | Sarah Hallberg | TEDxPurdueU
TEDx Talks · 4 HN recommenders
Dr. Sarah Hallberg argues in a TEDx talk that type 2 diabetes can be treated and potentially reversed through diet, especially by restricting carbohydrates. TED flagged the talk as outside its guidelines and warned against taking it as medical advice.

TypeScript is being ported to Go | interview with Anders Hejlsberg
Michigan TypeScript · 2 HN recommenders
An interview with Anders Hejlsberg, lead architect of TypeScript, about porting the TypeScript compiler to Go. He covers the 10x type-checking speedup, lower memory use, and why Go was chosen.

U.S. NAVY BASIC MECHANISMS OF FIRE CONTROL COMPUTERS MECHANICAL COMPUTER INSTRUCTIONAL FILM 27794
PeriscopeFilm · 11 HN recommenders
A 1953 US Navy training film on the basic mechanisms in fire control computers: shafts, gears, cams and differentials. It shows how these mechanical parts compute ship and target firing solutions.

U.S. Territories: Last Week Tonight with John Oliver (HBO)
LastWeekTonight · 2 HN recommenders
A Last Week Tonight segment on how century-old Supreme Court decisions left U.S. territories such as Puerto Rico, Guam and American Samoa without meaningful representation. It mixes comedy with a history of their legal status.

Ubuntu Slaughters Kittens | BSD Now 103
Jupiter Broadcasting · 4 HN recommenders
A BSD Now episode featuring a long interview with Joyent CTO Bryan Cantrill on dtrace, ZFS, pkgsrc, containers and more. It includes his rant on why Linux epoll is flawed and stories from Sun.

Unbelievably busy bicycle crossing in Amsterdam
Thomas Schlijper · 2 HN recommenders
Nine minutes of unedited footage of a very busy bicycle and car crossing at Korte Prinsengracht and Haarlemmerstraat in Amsterdam. Cyclists, pedestrians and cars flow through without traffic lights.

Unconditional Code • Michael Feathers • GOTO 2018
GOTO Conferences · 2 HN recommenders
Michael Feathers' GOTO Chicago 2018 talk on reducing error checks and conditional logic in code. He offers a framework for handling errors and decisions at the level of code and architecture.

Unconscious Bias @ Work | Google Ventures
GV (Google Ventures) · 2 HN recommenders
A Google Ventures talk on how unconscious biases shape product decisions, hiring and workplace interactions. It draws on research, including work by Google scientists, on how to counter them.

Underground dome house of the family who led geese to fly home
Kirsten Dirksen · 2 HN recommenders
Kirsten Dirksen tours the underground ferro-cement dome home of Paula and Bill Lishman, the family behind the geese-led flight story. The skylit earth-sheltered house stays warm below the frost line.

Understanding the Honda CR-V Hybrid E-Drive
WeberAuto · 2 HN recommenders
WeberAuto explains how the Honda E-Drive (i-MMD) hybrid transaxle works in the CR-V, Accord, Insight and Clarity hybrids. It walks through the system's three modes of operation.

Understanding the Job
Edward Capaldi · 3 HN recommenders
Clayton Christensen explains the jobs-to-be-done idea in five minutes, using the fast-food milkshake example. The point is that understanding the job a product is hired to do makes it easier to improve.

Understanding the Python GIL
David Beazley · 4 HN recommenders
David Beazley's PyCon 2010 talk explains how the Python Global Interpreter Lock works and shows experiments where multithreaded code runs slower, even on more cores, due to lock contention and context-switching overhead.

Understanding the Russian mindset
CaspianReport · 2 HN recommenders
CaspianReport explainer arguing that Russia's geography, especially its vast size and indefensible Moscow core, shapes its political behavior. It frames Russian security thinking through the lens of geographic determinism.

Understanding the Toyota RAV4 Hybrid
WeberAuto · 3 HN recommenders
Weber State's Professor Kelly explains the Toyota RAV4 Hybrid transaxle, including its planetary gearset eCVT and all nine operating modes. It also covers how the engine reaches nearly 40 percent thermal efficiency.

University of Texas at Austin 2014 Commencement Address - Admiral William H. McRaven
Texas Exes · 3 HN recommenders
Admiral William McRaven's 2014 University of Texas commencement address, built around lessons from Navy SEAL training. It famously opens with the case for making your bed every morning.

Unix and Google
FOAM · 4 HN recommenders
A short animated simulation comparing how Multics and Unix were developed, showing why Unix's small composable programs and pipes gave it a efficiency advantage. It frames Unix as a moonshot achievable by a small team.

UNIX: Making Computers Easier To Use -- AT&T Archives film from 1982, Bell Laboratories
AT&T Tech Channel · 6 HN recommenders
A 1982 AT&T Bell Labs film for students about the Unix system and how it can be used practically. It includes Lorinda Cherry building a talking calculator by piping together Unix commands, and a spell checker made from Unix utilities.

Unlocking UAP Mysteries: Economics, Aliens, and The Great Filter | Merged EP0109
Merged Podcast · 3 HN recommenders
A 146-minute Merged Podcast episode in which UAP researcher Ryan Graves talks with economist Robin Hanson about UFOs. Topics include the Great Filter, Hanson's grabby aliens model, and the push for more inquiry into UAPs.

Update on my Brain Injury & the Future of Strange Parts
Strange Parts · 4 HN recommenders
An update from the Strange Parts YouTuber on his recovery from a brain injury caused by a metal pipe while filming, and his plans for the channel.

Updated BP Texas City Animation on the 15th Anniversary of the Explosion
USCSB · 2 HN recommenders
The US Chemical Safety Board's updated animation of the 2005 BP Texas City refinery explosion, which killed 15 workers. It was released ahead of a process safety training application.

Uppestcase and Lowestcase Letters [advances in derp learning]
suckerpinch · 5 HN recommenders
Tom Scott-style absurdist research by tom7 for SIGBOVIK 2021, using machine learning to discover letterforms that are 'uppercaser' than uppercase A and lowercaser than lowercase. It is a comedic, technically inventive deep dive with fonts and a paper.

USENIX ATC '21/OSDI '21 Joint Keynote Address-It's Time for Operating Systems to Rediscover Hardware
USENIX · 12 HN recommenders
Timothy Roscoe of ETH Zurich delivers the joint USENIX ATC/OSDI 2021 keynote arguing that operating systems must reckon with modern hardware, which is a heterogeneous collection of processors, firmware and coprocessors rather than a simple machine. It shows how much runs below and beside Linux.

USENIX Security '18-Q: Why Do Keynote Speakers Keep Suggesting That Improving Security Is Possible?
USENIX · 10 HN recommenders
James Mickens's humorous USENIX Security keynote argues that improving security and trusting opaque technology like machine learning is far harder than the industry admits.

User-level threads....... with threads. - Paul Turner - Google
Linux Plumbers Conference · 6 HN recommenders
Paul Turner of Google presents kernel interfaces for user-level scheduling of real threads, aiming at a uniform synchronous programming model across C++, Java, Go and Python. It introduces the switchto-style system calls behind Google's fibers.

Using a 1930 Teletype as a Linux Terminal
CuriousMarc · 4 HN recommenders
CuriousMarc connects a restored 1930 Model 15 Teletype to a Linux machine and uses it as a terminal, after commenters requested it. The video shows the challenges of linking a 5-bit mechanical device to a modern OS.

Using Emacs - 1 - setting up the package manager
Mike Zamansky · 2 HN recommenders
The first episode of Mike Zamansky's Using Emacs series, covering setting up the package manager for new Emacs users as a start toward customization and efficient editing.

Using ground relays with Starlink
Mark Handley · 5 HN recommenders
Mark Handley of UCL explains, with simulation visualizations, how early Starlink satellites without inter-satellite links could still give low-latency wide-area communication by hopping via ground relays. He shows it can beat fibre on many long paths.

Using JSLint For Evil
ryantravistate · 2 HN recommenders
A three-minute clip in which Douglas Crockford explains why he allowed the JSLint reference implementation to be used for evil. It recounts the license clause and how corporate lawyers reacted.

Using Python to Code by Voice
Next Day Video · 12 HN recommenders
Tavis Rudd describes how RSI forced him to program by voice, and shows the Python and Emacs Lisp system he built with voice recognition. A live demo creates and deploys a small system without touching the keyboard.

Using Social Media To Cover For Lack Of Original Thought - Onion Talks - Ep. 6
The Onion · 3 HN recommenders
A four-minute Onion Talks parody in which a social media consultant pitches never putting any effort into social marketing. It lampoons TED-style talks and marketing consultants.

USPS: Last Week Tonight with John Oliver (HBO)
LastWeekTonight · 3 HN recommenders
A Last Week Tonight segment on the US Postal Service's financial troubles. John Oliver explains why it matters, what pushed it to this point, and what viewers can do.

Vaccines and Autism: A Measured Response
hbomberguy · 3 HN recommenders
hbomberguy's long video dissects the anti-vaccine movement, analyzing Andrew Wakefield's fraudulent MMR-autism study, the media's role and Wakefield's loss of his license. It combines detailed research with humor.

Vaccines: Last Week Tonight with John Oliver (HBO)
LastWeekTonight · 2 HN recommenders
John Oliver's Last Week Tonight segment on vaccines, arguing that the benefits far outweigh the minuscule risks and discussing why some parents still doubt their safety.

Valter Longo, Ph.D. on Fasting-Mimicking Diet & Fasting for Longevity, Cancer & Multiple Sclerosis
FoundMyFitness · 4 HN recommenders
Rhonda Patrick interviews USC gerontologist Valter Longo about fasting, the fasting-mimicking diet, and their effects on longevity, cancer, and multiple sclerosis. They discuss mechanisms such as IGF-1 and autophagy and clinical trials.

Vampire 2 Review - The Fastest Amiga Ever?!
Dan Wood · 2 HN recommenders
Dan Wood reviews the Vampire 2 FPGA accelerator for the Amiga 600. He covers how much faster it makes the machine and what it can run.

Vancouver Never Plays Itself
Every Frame a Painting · 4 HN recommenders
A video essay from Every Frame a Painting about Vancouver, a major film production city that almost never appears onscreen as itself. It shows clips of films and TV shot there that pass the city off as somewhere else.

VCF East: Ken Thompson interviewed by Brian Kernighan
Vintage Computer Federation · 11 HN recommenders
Brian Kernighan interviews Unix co-creator Ken Thompson at VCF East 2019. Thompson recounts how he was hired at Bell Labs, writing the Unix kernel in about three weeks, the origins of B and TMG, pipes, and other anecdotes.

Vectors | Chapter 1, Essence of linear algebra
3Blue1Brown · 17 HN recommenders
The first chapter of 3Blue1Brown's Essence of Linear Algebra series, introducing vectors with animated geometric visuals. It begins a series that builds intuition for linear algebra from the basics.

Velocity 09: John Allspaw and Paul Hammond, "10+ Deploys Pe
O'Reilly · 2 HN recommenders
John Allspaw and Paul Hammond's Velocity 09 talk on how Flickr achieved ten or more deploys per day through close cooperation between development and operations.

Velocity 2012: Richard Cook, "How Complex Systems Fail"
O'Reilly · 3 HN recommenders
Dr. Richard Cook, a physician and patient safety researcher, presents his ideas on how complex systems fail, at Velocity 2012. He argues for designing for resiliency rather than trying to exhaustively handle every failure mode.

Velocity NY 2013: Richard Cook, "Resilience In Complex Adaptive Systems"
O'Reilly · 4 HN recommenders
Richard Cook's short Velocity 2013 talk on resilience in complex adaptive systems, arguing systems operate near the edge of failure and that the surprise is how rarely they fail. He presents a model of how pressures push systems toward failure boundaries.

Verbatim: What Is a Photocopier? | Op-Docs
New York Times Opinion · 4 HN recommenders
A New York Times Op-Docs short in which actors perform a real legal deposition transcript. A lawyer gets tangled in an absurd argument with a county employee about what counts as a photocopier, in a dispute over fees for public records.

Veritasium: A Story of YouTube Propaganda
Tom Nicholas · 3 HN recommenders
Tom Nicholas critiques Veritasium's sponsored video on driverless cars, using it to examine YouTube sponsorships, science-channel credibility and how statistics and misinformation can be used in branded content.

Veritasium: What Everyone Gets Wrong About AI and Learning – Derek Muller Explains
Perimeter Institute for Theoretical Physics · 6 HN recommenders
Veritasium's Derek Muller gives a Perimeter Institute livestream on how AI might change teaching and learning. He draws on past technology shifts and cognitive science to argue that learning requires effortful repetition.

Vertical Bifacial Solar Panel Performance Results Part 1
Projects With Everyday Dave · 3 HN recommenders
A hobbyist compares vertical bifacial solar panels against south-facing angled panels using winter production results. It tests whether the usual mounting approach is actually best.

VFX Artists React to DUNE Bad & Great CGi
Corridor Crew · 4 HN recommenders
Corridor Crew VFX artists react to the visual effects of the 2021 Dune and compare them with David Lynch's 1984 version. They discuss which effects were practical and which were CGI.

Vibe coding complex changes in Rust
Jon Gjengset · 2 HN recommenders
Jon Gjengset spends about three hours livecoding complex changes in a Rust codebase with agentic AI tools, testing his hypothesis that AI is weak at non-pattern work. He documents where Claude Code helps and where it struggles.

Video explains the world's most important 6-sec drum loop
Landon Proctor · 15 HN recommenders
Nate Harrison's 2004 video history of the Amen Break, a six-second drum sample from a 1969 b-side that became the basis of hip-hop sampling, jungle and drum and bass. It is also a meditation on cultural ownership and creativity.

Video from Jeff Bezos about Amazon and Zappos
07272009july · 2 HN recommenders
A short 2009 video of Jeff Bezos talking about Amazon and Zappos. He discusses customer focus, invention and long-term thinking.