Blimps and airships might be relics of the past, but could they help save the future? Head to https://www.odoo.com/r/veritasium to start building your own website for free.

If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically – https://ve42.co/SnatomsV

▀▀▀
Thank you to Eli Dourado for letting us explore the argument he describes in his article: https://ve42.co/Dourado

A huge thank you to Dan Grossman and Nick Allman for their time, help, and expertise.

Also a massive thank you to those who helped us understand the world of modern airships, and provided valuable feedback – Prof. Barry Prentice, Gennadiy Verba, Prof.
Christoph Pflaum, Heather Roszczyk, Dr. Casey Handmer, Richard Van Trueren, & Thibault Proux.

We are also grateful for the collaboration of the companies who are working hard to make this comeback happen – Atlas LTA, Buoyant Aircraft Systems International, Hybrid Air Vehicles, LTA Research, & Flying Whales.

▀▀▀
References:

How Airships Could Overcome a Century of Failure, Bloomberg Originals via YouTube – https://ve42.co/AirshipsCoF

Why the Airship May Be the Future of Air Travel, Undecided with Matt Ferrell via YouTube – https://ve42.co/FutureAirships

Airship, Wikipedia – https://ve42.co/AirshipWiki

Handmer, C. (2020). A quick note on airships. Casey Handmer’s Blog – https://ve42.co/Handmer2020

UNCTAD (2020). Review of Maritime Transport 2020 – https://ve42.co/RMT2020

National Transportation Research Center (2023). Freight Analysis Framework Version 5 (FAF5) – https://ve42.co/FAF5

Hybrid Air Vehicles (2023). HAV – https://ve42.co/HAV

LTA Research (2023). Lighter Than Air (LTA) Research – https://ve42.co/LTAResearch

OceanSkyCruises (2023). North Pole Expedition – OceanSkyCruises – https://ve42.co/NPExpedition

Flying Whales (2023). Flying Whales – https://ve42.co/FlyingWhales

Buoyant Aircraft Systems International (2023). BASI – https://ve42.co/BASI

Atlas LTA (2023). Atlas Electric Airships | Atlas LTA Airships – https://ve42.co/AtlasLTA

Prentice, B. (2021). Hydrogen gas-fuelled airships could spur development in remote communities. The Conversation – https://ve42.co/HydrogenAirships

Grossman, D. (2009). The Hindenburg Disaster. Airships – https://ve42.co/Hindenburg1

Hindenburg Disaster, Wikipedia – https://ve42.co/HindenburgWiki

What happened to the Hindenburg?, Jared Owen via Youtube – https://ve42.co/Owen2019

National Museum of the U.S. Navy. USS Akron (ZRS-4) – https://ve42.co/USSAkron

USS Akron, Wikipedia – https://ve42.co/USSAkronWiki

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Written by Casper Mebius & Derek Muller
Directed by Casper Mebius
Edited by Jack Saxon
Filmed by Derek Muller, Jamie MacLeod, Han Evans, & Raquel Nuno
Animation by Mike Radjabov & Fabio Albertelli
Additional video/photos supplied by Getty Images, Pond5, & Envato Elements
Music from Epidemic Sound & Pond5
Produced by Casper Mebius, Derek Muller, & Han Evans

More footage & photos from:
Thermite Rail Welding video by dulevoz via YouTube – https://www.youtube.com/watch?v=rNjosF789X4

O’Rourke, T. (2016). Chronicle Covers: When the Hindenburg burst into flames. San Francisco Chronicle – https://ve42.co/Hindenburg2

Wind turbine blade transport video by DOLL Fahrzeugbau via YouTube – https://www.youtube.com/watch?v=5aPXuap0LZw

Wind turbine blade transport through mountains video by CGTN via Youtube – https://www.youtube.com/watch?v=9dtUrY8_1CM

Former Airship Hangar by Stefan Kühn – https://ve42.co/Aerium

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Spacetime on its smallest scales is a seething ocean of black holes and wormholes flickering into and out of existence—or so many physicists think has to be the case. But why should we take this spacetime foam seriously if we’ve never seen any evidence of it?

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Hosted by Matt O’Dowd
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Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
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© 2023 PBS. All rights reserved.

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We knew that the James Webb Space Telescope would find interesting stuff, especially about the mysterious early times. For example, there are hints that the galaxies we’re seeing are brighter and more regular than expected given the short amount of time they’d had to grow. Well, perhaps no one was expecting that we’d find a completely new type of star—one mostly made of and powered by dark matter and shining as bright as an entire galaxy. Which, by the way, might help us explain those pesky giant galaxies.

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Hosted by Matt O’Dowd
Written by Matt Caplan & Matt O’Dowd
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Directed by Andrew Kornhaber
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Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
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IQ is supposed to measure intelligence, but does it? Head to https://brilliant.org/veritasium to start your free 30-day trial, and the first 200 people get 20% off an annual premium subscription.

If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically – https://ve42.co/SnatomsV

▀▀▀
A huge thank you to Emeritus Professor Cecil R. Reynolds and Dr. Stuart J. Ritchie for their expertise and time.

Also a massive thank you to Prof. Steven Piantadosi and Prof. Alan S. Kaufman for helping us understand this complicated topic. As well as to Jay Zagrosky from Boston University’s Questrom School of Business for providing data from his study.

▀▀▀
References:
Kaufman, A. S. (2009). IQ testing 101. Springer Publishing Company.

Reynolds, C. R., & Livingston, R. A. (2021). Mastering modern psychological testing. Springer International Publishing.

Ritchie, S. (2015). Intelligence: All that matters. John Murray.

Spearman, C. (1961). ” General Intelligence” Objectively Determined and Measured. – https://ve42.co/Spearman1904

Binet, A., & Simon, T. (1907). Le développement de l’intelligence chez les enfants. L’Année psychologique, 14(1), 1-94.. – https://ve42.co/Binet1907

Intelligence Quotient, Wikipedia – https://ve42.co/IQWiki

Radiolab Presents: G. – https://ve42.co/RadioLabG

McDaniel, M. A. (2005). Big-brained people are smarter: A meta-analysis of the relationship between in vivo brain volume and intelligence. Intelligence, 33(4), 337-346. – https://ve42.co/McDaniel2005

Deary, I. J., Strand, S., Smith, P., & Fernandes, C. (2007). Intelligence and educational achievement. Intelligence, 35(1), 13-21. – https://ve42.co/Deary2007

Lozano-Blasco, R., Quílez-Robres, A., Usán, P., Salavera, C., & Casanovas-López, R. (2022). Types of Intelligence and Academic Performance: A Systematic Review and Meta-Analysis. Journal of Intelligence, 10(4), 123. – https://ve42.co/Blasco2022

Kuncel, N. R., & Hezlett, S. A. (2010). Fact and fiction in cognitive ability testing for admissions and hiring decisions. Current Directions in Psychological Science, 19(6), 339-345. – https://ve42.co/Kuncel2010

Laurence, J. H., & Ramsberger, P. F. (1991). Low-aptitude men in the military: Who profits, who pays?. Praeger Publishers. – https://ve42.co/Laurence1991

Gregory, H. (2015). McNamara’s Folly: The Use of Low-IQ Troops in the Vietnam War; Plus the Induction of Unfit Men, Criminals, and Misfits. Infinity Publishing.

Gottfredson, L. S., & Deary, I. J. (2004). Intelligence predicts health and longevity, but why?. Current Directions in Psychological Science, 13(1), 1-4. – https://ve42.co/Gottfredson2004

Sanchez-Izquierdo, M., Fernandez-Ballesteros, R., Valeriano-Lorenzo, E. L., & Botella, J. (2023). Intelligence and life expectancy in late adulthood: A meta-analysis. Intelligence, 98, 101738. – https://ve42.co/Izquierdo2023

Zagorsky, J. L. (2007). Do you have to be smart to be rich? The impact of IQ on wealth, income and financial distress. Intelligence, 35(5), 489-501. – https://ve42.co/Zagorsky2007

Strenze, T. (2007). Intelligence and socioeconomic success: A meta-analytic review of longitudinal research. Intelligence, 35(5), 401-426. – https://ve42.co/Strenze2007

Deary, I. J., Pattie, A., & Starr, J. M. (2013). The stability of intelligence from age 11 to age 90 years: the Lothian birth cohort of 1921. Psychological science, 24(12), 2361-2368. – https://ve42.co/Deary2013

Flynn, J. R. (1987). Massive IQ gains in 14 nations: What IQ tests really measure. Psychological bulletin, 101(2), 171. – https://ve42.co/Flynn1987

Why our IQ levels are higher than our grandparents’ | James Flynn, TED via YouTube – https://www.youtube.com/watch?v=9vpqilhW9uI

Duckworth, A. L., Quinn, P. D., Lynam, D. R., Loeber, R., & Stouthamer-Loeber, M. (2011). Role of test motivation in intelligence testing. Proceedings of the National Academy of Sciences, 108(19), 7716-7720. – https://ve42.co/Duckworth2011

Kulik, J. A., Bangert-Drowns, R. L., & Kulik, C. L. C. (1984). Effectiveness of coaching for aptitude tests. Psychological Bulletin, 95(2), 179. – https://ve42.co/Kulik1984

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▀▀▀
Written by Derek Muller, Casper Mebius, & Petr Lebedev
Edited by Trenton Oliver
Filmed by Derek Muller, Han Evans, & Raquel Nuno
Animation by Fabio Albertelli & Ivy Tello
Additional video/photos supplied by Getty Images & Pond5
Music from Epidemic Sound
Produced by Derek Muller, Casper Mebius, & Han Evans

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We have no idea what dark matter is, other than it’s some source of gravity that is completely invisible but exerts way more pull that all of the regular matter. More than all of the stars, all of the gas, all of the black holes…unless dark matter is black holes, then black holes are most of everything. Dark matter constitutes 80% or so of the mass in the universe, which means even our Milky Way galaxy is mostly a vast ball of dark matter that happens to have attracted a relative sprinkling of baryons—atoms in the form of gas, which lit up as starry glitter spinning in the middle of this invisible gravitational well.

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Hosted by Matt O’Dowd
Written by Taha Dawoodbhoy & Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini, Adriano Leal & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell

Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2023 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka

Space Time Was Made Possible In Part By:

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A few weeks ago a large team of gravitational wave astronomers announced something pretty wild. The moderately confident detection of pervasive ripples in the fabric of space time that presumably fills the cosmos, detected by watching for subtle connections between the signals from rapidly spinning cores of dead stars in our galactic neighborhood. In other words, the gravitational wave background has probably been detected using a pulsar timing array.

Thumbnail Image Illustration Credit: Olena Shmahalo for NANOGrav

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Hosted by Matt O’Dowd
Written by Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini, Adriano Leal & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
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Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2023 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka

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00:00 Introduction
01:02 Relativity and Gravitational Waves
02:21 Discovering Gravitational Waves
03:49 Gravitational Waves & Pulsars
05:04 Pulsar Timing Array Discovers GWB
06:48 Understanding the GWB
07:55 Are Pulsars Seeing Gravitational Waves?
09:00 Correlated & Anti-Correlated Pulsar Rates
10:07 Hellings and Downs Curve
11:44 Binary Supermassive Black Holes
13:39 NANOgrav Frequency Spectrum

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One of the most fundamental physics facts is that the speed of light in a vacuum is constant for all observers. But can we really be sure that the speed of light wasn’t different in the past, or perhaps in other parts of the universe? In fact, variable speed of light theories have long been used to try to explain everything from dark energy to gravity itself. Let’s explore how constant this fundamental constant really is.

All Previous Episodes Referenced
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Hosted by Matt O’Dowd
Written by Fernando Franco Félix & Matt O’Dowd
Post Production by Leonardo Scholzer, Yago Ballarini, Adriano Leal & Stephanie Faria
Directed by Andrew Kornhaber
Associate Producer: Bahar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber
Executive in Charge for PBS: Maribel Lopez
Director of Programming for PBS: Gabrielle Ewing
Assistant Director of Programming for PBS: John Campbell

Spacetime is produced by Kornhaber Brown for PBS Digital Studios.
This program is produced by Kornhaber Brown, which is solely responsible for its content.
© 2023 PBS. All rights reserved.

End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/user/MultiDroideka

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00:00 Introduction
00:31 Light & Relativity
01:49 Is the Speed of Light Invariant?
05:13 First VSL Theory
06:43 VSL & The Horizon Problem
09:09 Moffat’s VSL Proposal
09:46 Albercht & Mageuijo’s VSL
10:37 Are VSL Theories Testable?
12:58 VSL & Refractive Index of the Universe
13:56 Is there VSL Evidence?
14:51 Comments

J. Robert Oppenheimer forever changed the course of history. He may be the most important physicist to have ever lived. Part of this video is sponsored by Wren. Offset your carbon footprint on Wren: ​https://www.wren.co/start/veritasium1 For the first 100 people who sign up, I will personally pay for the first month of your subscription!

If you want to learn more about Oppenheimer, I strongly recommend the book “American Prometheus” By Kai Bird and Martin Sherwin. It was the inspiration for Christopher Nolan’s 2023 film “Oppenheimer”, which won multiple awards, including Oscars in 2024 for Best Picture and Best Actor (Cillian Murphy).

If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically – https://ve42.co/SnatomsV

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A huge thank you to Dr. Martin Rohde and Dr. Antonia Denkova from the TU Delft for proofreading the script and providing valuable feedback.

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References:

Bird, K., & Sherwin, M. J. (2021). American Prometheus: the triumph and tragedy of J. Robert Oppenheimer. Atlantic Books.

Smith, A. K., & Weiner, C. (1980). Robert Oppenheimer: letters and recollections. Bulletin of the Atomic Scientists, 36(5), 19-27. – https://ve42.co/Smith1980

Combes, J. M., Duclos, P., & Seiler, R. (1981). The born-oppenheimer approximation. Rigorous atomic and molecular physics, 185-213. – https://ve42.co/Combes1981

Rhodes, R. (2012). The making of the atomic bomb. Simon and Schuster.

Oppenheimer, J. R., & Volkoff, G. M. (1939). On massive neutron cores. Physical Review, 55(4), 374. – https://ve42.co/Oppenheimer1939b

Oppenheimer, J. R. (1927). Bemerkung zur Zerstreuung der α-Teilchen. Zeitschrift für Physik, 43(5-6), 413-415. – https://ve42.co/Oppenheimer1927

Oppenheimer, J. R. (1927). Zur quantenmechanik der richtungsentartung. Zeitschrift für Physik, 43(1-2), 27-46. – https://ve42.co/Oppenheimer1927b

Born, M., & Oppenheimer, R. (1927). Zur Quantentheorie der Molekeln Annalen der Physik, v. 84. – https://ve42.co/Born1927

Oppenheimer, J. R. (1928). Three notes on the quantum theory of aperiodic effects. Physical review, 31(1), 66.

Oppenheimer, J. R. (1928). On the quantum theory of the capture of electrons. Physical review, 31(3), 349.

Oppenheimer, J. R. (1931). Note on light quanta and the electromagnetic field. Physical Review, 38(4), 725.

Furry, W. H., & Oppenheimer, J. R. (1934). On the theory of the electron and positive. Physical Review, 45(4), 245. – https://ve42.co/Oppenheimer1934

Oppenheimer, J. R. (1935). Note on charge and field fluctuations. Physical Review, 47(2), 144. – https://ve42.co/Oppenheimer1935

Oppenheimer, J. R., & Snyder, H. (1939). On continued gravitational contraction. Physical Review, 56(5), 455. – https://ve42.co/Oppenheimer1939

Oppenheimer, J. R., & Phillips, M. (1935). Note on the transmutation function for deuterons. Physical Review, 48(6), 500. – https://ve42.co/Oppenheimer1935b

Malik, J. (1985). Yields of the Hiroshima and Nagasaki nuclear explosions (No. LA-8819). Los Alamos National Lab.(LANL), Los Alamos, NM (United States). – https://ve42.co/Malik1985

Ignition of the atmosphere with nuclear bombs — https://ve42.co/Konopinski46

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Special thanks to our Patreon supporters:
Adam Foreman, Amadeo Bee, Anton Ragin, Balkrishna Heroor, Benedikt Heinen, Bernard McGee, Bill Linder, Blake Byers, Burt Humburg, Dave Kircher, Diffbot, Evgeny Skvortsov, Gnare, John H. Austin, Jr., john kiehl, Josh Hibschman, Juan Benet, KeyWestr, Lee Redden, Marinus Kuivenhoven, Meekay, meg noah, Michael Krugman, Orlando Bassotto, Paul Peijzel, Richard Sundvall, Sam Lutfi, Stephen Wilcox, Tj Steyn, TTST, Ubiquity Ventures

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Directed by Petr Lebedev
Written by Petr Lebedev & Derek Muller
Produced by Petr Lebedev, Han Evans and Derek Muller
Edited by Trenton Oliver & Katrina Jackson
Filmed by Derek Muller
Animation by Fabio Albertelli, Ivy Tello, & Mike Radjabov
Illustration by Jakub Misiek and Celia Bode
Additional video/photos supplied by Getty Images & Pond5
Music from Epidemic Sound

“Life will never be the same. Life is changing”

Fitting words for this new world we’re moving into. In 5 to 15 years, barring some widespread catastrophic world disaster, there will be technologies as mind-blowing as ChatGPT coming out every month. Yes, though ChatGPT has been over-hyped in some ways, but it has done something that’s never been done before, while defying the naysayers, who said it couldn’t be done.

#AI #singularity #thesingularity

This is the biggest, brightest, hottest video there is about the science of fireworks. This video is brought to you by Kiwico – go to https://kiwico.com/veritasium for your first month free!

If you’re looking for a molecular modeling kit, try Snatoms – a kit I invented where the atoms snap together magnetically: https://snatoms.com

Check out Gene’s channel here — @PotatoJet

Massive thanks to Mike Tockstein from Pyrotechnic Innovations @PyroInnovations
and Will Scott from Las Vegas Display Fireworks Inc, for all your pyro knowledge and keeping us safe.

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Massive thanks to Gene Nagata from PotatoJet for filming this episode – check out his wonderful channel for more videos about cameras and FPV drones.

Thanks to Brandon Williams for helping with the chemistry and sourcing of materials.

Thanks to Matthew Tosh for the help with the chemistry conversation about fireworks.

Thanks to Simon Werrett for the help with the history of fireworks.

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Werrett, S. (2010). Fireworks: pyrotechnic arts and sciences in European history. University of Chicago Press

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Special thanks to our Patreon supporters:
Emil Abu Milad, Tj Steyn, meg noah, Bernard McGee, KeyWestr, Amadeo Bee, TTST, Balkrishna Heroor, John H. Austin, Jr., john kiehl, Anton Ragin, Diffbot, Gnare, Dave Kircher, Burt Humburg, Blake Byers, Evgeny Skvortsov, Meekay, Bill Linder, Paul Peijzel, Josh Hibschman, Mac Malkawi, Juan Benet, Ubiquity Ventures, Richard Sundvall, Lee Redden, Stephen Wilcox, Marinus Kuivenhoven, Michael Krugman, Sam Lutfi.

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Written by Derek Muller
Edited by Trenton Oliver
Animated by Ivy Tello and Fabio Albertelli
Filmed by Derek Muller, Hunter Peterson, Gene Nagata, Raquel Nuno
Production by Hunter Peterson and Stephanie Castillo
Additional video/photos supplied by Mike Tockstein/Pyrotechnic Innovations
Music from Epidemic Sound & Jonny Hyman
Produced by Derek Muller, Petr Lebedev, Emily Zhang, & Casper Mebius