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How Tech Is Breaking the Rules of Biology | Posthuman with Emily Chang

Sat, 19 Apr 2025 01:34:07 +0000

From birth to death, tech is stretching the boundaries of biology. In this episode of Posthuman, we explore the discoveries that could transform reproduction, healthcare and how we die.

Technology that once seemed like science fiction is rapidly becoming reality, transforming the very essence of our existence. In this four-part series, Emily Chang unravels the future of being human in an age of unprecedented innovation.

This video has been updated to correct the title of Insoo Hyun, director of the Center for Life Sciences, Museum of Science.

Watch more Posthuman with Emily Chang: https://www.youtube.com/playli....st?list=PLqq4LnWs3ol

#tech #science #Posthuman
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Something Strange Happens When You Trust Quantum Mechanics

Sat, 19 Apr 2025 00:52:12 +0000

Does light take all possible paths at the same time

We’re incredibly grateful to Prof. David Kaiser, Prof. Steven Strogatz, Prof. Geraint F. Lewis, Elba Alonso-Monsalve, Prof. Christopher S. Baird, Prof. Anthony Bloch, and Prof. Stephen Bartlett for their invaluable contributions to this video.

A special thanks to Mahesh Shenoy from FloatHeadPhysics for his help with this video. Check out his excellent intuitive video on the UV Catastrophe here (Sep 2024): https://www.youtube.com/watch?v=ALEDjjAVZSY

▀▀▀
0:00 What path does light travel?
2:40 Black Body Radiation
6:47 How did Planck solve the ultraviolet catastrophe?
9:42 The Quantum of Action
13:25 De Broglie’s Hypothesis
15:16 The Double Slit Experiment
20:00 How Feynman Did Quantum Mechanics
25:01 Proof That Light Takes Every Path
31:16 The Theory of Everything

▀▀▀
Sign up to our Patreon to watch the Q&A for free: https://www.patreon.com/c/veritasium

Try Snatoms! A molecular modelling kit I invented where the atoms snap together.
https://ve42.co/SnatomsV

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References:
Armin Hermann (Nov 1974). The Genesis of Quantum Theory (1899-1913). - https://ve42.co/genquanttheor
Richard P. Feynman (1985). QED The Strange Theory of Light and Matter. - https://ve42.co/qed
A fantastic book on the history of the Principle of Least Action: Rojo, A. and Bloch, A. The
Principle of Least Action: History and Physics. - https://ve42.co/Bloch2018
Coopersmith, J. (2017). The lazy universe: an introduction to the principle of least action. Oxford University Press. - https://ve42.co/LazyU
PBS Space Time. (Nov 2021) - https://www.youtube.com/watch?v=Q_CQDSlmboA
Sabine Hossenfelder. (May 2022) - https://www.youtube.com/watch?v=A0da8TEeaeE
Max Planck (1901). On the Law of Distribution of Energy in the Normal Spectrum. Annalen der Physik - https://ve42.co/lawdistenergy
Paul Ehrenfest (1911). Welche Züge der Lichtquantenhypothese spielen in der Theorie der Wärmestrahlung eine wesentliche Rolle?. Wiley Online Library - https://ve42.co/quantthermrad
Nils-Erik Bomark and Reidun Renstrøm (Aug 2023). The Ultraviolet myth. Proceedings of Science - https://ve42.co/uvmyth
Planck's law. In Wikipedia - https://ve42.co/planckslaw
PBS Space Time. (Jul 2017). - https://www.youtube.com/watch?v=vSFRN-ymfgE&t=10s
Einstein and The Photoelectric Effect. (Jan 2005) via APS News - https://ve42.co/einsteinphotoelec
Louis de Broglie (1924). On the Theory of Quanta. - https://ve42.co/theoryquanta
Larry Sorensen (2012). Path Integrals 1. University of Washington - https://ve42.co/pathintegrals
Feynman’s Method of “A Particle Exploring All Possible Paths”. (Mar 2018) via Pure Dhamma - https://ve42.co/allposspaths
A great intuitive video on the Feynman path integral approach - https://www.youtube.com/watch?v=Sp5SvdDh2u8&t=1253s
Origins of Quantum Theory. via University of Pittsburgh - https://ve42.co/origquanttheor

Images & Video:
Nobistor Altona 1880 via NDR - https://ve42.co/streetlight
Edison incandescent lights by William J. Hammer via Wikimedia Commons - https://ve42.co/edinclights
The full expanded form of the Standard Model Lagrangian by Chen Ning Yang et al. via Wikipedia - https://ve42.co/stmodellang
Muon Ray. (2011). https://www.youtube.com/watch?v=-QUj2ZRUa7c
Muon Ray. (2011). https://www.youtube.com/watch?v=1C7abO7LtV0
Bohrs Atomic Model via EEEGUIDE.COM - https://ve42.co/bohrmodel

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Special thanks to our Patreon supporters:
Adam Foreman, Albert Wenger, Alex Porter, Alexander Tamas, Anton Ragin, Autodidactic Studios, Balkrishna Heroor, Bertrand Serlet, Blake Byers, Bruce, Dave Kircher, David Johnston, David Tseng, Evgeny Skvortsov, Garrett Mueller, Gnare, gpoly, Greg Scopel, Juan Benet, Keith England, KeyWestr, Kyi, Lee Redden, Marinus Kuivenhoven, Matthias Wrobel, Meekay, meg noah, Michael Krugman, Orlando Bassotto, Paul Peijzel, qiaohui wei, Richard Sundvall, Sam Lutfi, Tj Steyn, TTST, Ubiquity Ventures, wolfee

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Directed by Casper Mebius
Written by Casper Mebius and Derek Muller
Edited by Trenton Oliver and Peter Nelson
Animated by Fabio Albertelli, Mike Radjabov, Ivy Tello, Andrew Neet and Emma Wright
Illustrations by Jakub Misiek, Tommy A. Steven and Cainejan Esperanza
Filmed by Derek Muller and Casper Mebius
Produced by Casper Mebius, Derek Muller, Rob Beasley Spence, Gabe Strong, Geeta Thakur, Emilia Gyles, Zoe Heron, Emily Zhang and Tori Brittain

Thumbnail contributions by Ignat Berbeci, Ben Powell, Jakub Misiek, Ren Hurley, and Peter Sheppard

Additional video/photos supplied by Getty Images and Storyblocks
Music from Epidemic Sound

The Role of Red Blood Cells in Anemia

Thu, 10 Apr 2025 22:04:09 +0000

Watch this video to learn about how the body makes red blood cells, which contain hemoglobin and carry oxygen throughout the body. Anemia occurs when there are too few red blood cells or not enough hemoglobin. Find out more about anemia and other blood disorders by visiting ASH's patient resources webpage http://hematology.org/Patients/.

This animation was featured in the documentary film "Blood Detectives." To learn more about the film, visit http://www.hematology.org/Publ....ications/Blood-Detec

Why Solar Eclipses Are Such a Big Deal

Mon, 10 Jun 2024 06:07:53 +0000

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On April 8, 2024, the Moon’s shadow fell upon the Earth, creating a total solar eclipse across North America. If you had the chance to see it, you're surely glad you didn't miss it. It’s an amazing coincidence that total eclipses happen at all — and that we’re alive at a time when we can see and predict them. We made this video so you can learn how to watch an eclipse safely, what to look for during an eclipse, why eclipses happen, and how eclipses have helped advance scientific research.

Explore this April 8, 2024 eclipse map from NASA! https://science.nasa.gov/eclip....ses/future-eclipses/

Find your next solar eclipse here: https://eclipse.gsfc.nasa.gov/SEatlas/SEatlas.html

Learn more about the solar eclipse timer app: https://www.solareclipsetimer.com/

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How Do We Measure How Big the Universe Is?

Mon, 10 Jun 2024 05:44:53 +0000

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Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in.

References: https://sites.google.com/view/....cosmic-distance-refe

0:00 How far away are things?
1:05 Near, far, parallax that star
3:25 Island universes and Hubble's blinking star
5:51 Redshifted rainbows and the expanding universe
7:41 Supernovae and the end of everything
9:08 Conclusion: The ladder of discovery
10:00 I'm hosting a game show!

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What Is Fire?

Mon, 10 Jun 2024 05:43:55 +0000

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Why does fire burn? What's the chemistry and physics of a flame? This week, learn about the beautiful science happening inside a flame!

Michael Faraday's Christmas lectures on candle chemistry:
http://blogs.scientificamerica....n.com/cocktail-party
http://www.bartleby.com/30/7.html

Flames in space:
http://science.nasa.gov/scienc....e-news/science-at-na

Richard Feynman talking about fire:
http://www.itsokaytobesmart.co....m/post/27299255757/f

Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below!
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It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe
Email me: itsokaytobesmart AT gmail DOT com
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For more awesome science, check out: http://www.itsokaytobesmart.com
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios

Joe Hanson - Creator/Host/Writer
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Theme music: "Ouroboros" by Kevin MacLeod

Other music via APM
Stock images from Shutterstock, stock footage from Videoblocks

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More videos:
Why Does February Have 28 Days? https://www.youtube.com/watch?v=AgKaHTh-_Gs
Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys
Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA
Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8

I Measured the Pollution From My Gas Stove. It Was Bad.

Sat, 01 Jun 2024 04:28:37 +0000

Subscribe to my newsletter: https://www.distilled.earth/

There's been a lot of news about gas stoves. At first, I was skeptical about the panic over these appliances. But then I measured the indoor air pollution from our stove and talked to public health experiments.

You can view all sources, learn more about my experiment, and listen to behind-the-scenes interviews on the Distilled website: https://www.distilled.earth/p/i-measured-the-pollution-from-my

#gasstove #gasstoves #climatechange #methane

What if we could see Spacetime? An immersive experience

Thu, 09 May 2024 05:44:30 +0000

A visual and musical journey to the edge of our universe, visualizing the fabric of space-time in order to study its dynamics and different forms...

0:00 - Galaxies
2:05 - Big Bang
3:20 - The Earth
6:35 - Black hole
9:10 - Rotating black hole
10:37 - Gravitational waves

You can listen to the soundtrack on SoundCloud :
https://soundcloud.com/arousse....l/sets/voyage-a-trav

This video is narrated by Octave Masson.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
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To support me on Patreon : http://www.patreon.com/ScienceClic
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Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en

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What would we see at the speed of light?

Thu, 09 May 2024 05:41:55 +0000

What optical effects appear when we accelerate? Could we reach the speed of light? And what would we see when we try to go faster? All these answers in 15 minutes!

0:00 - Introduction
1:01 - Take-off
2:25 - Aberration of light
4:41 - Doppler effect
6:50 - Time dilation
7:48 - Length contraction
10:28 - Speed of light
12:24 - Warp drive

This video is narrated by Octave Masson.
For more videos, subscribe to the YouTube channel : https://www.youtube.com/ScienceClicEN
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Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en

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To learn more :
https://en.wikipedia.org/wiki/....Relativistic_aberrat
https://en.wikipedia.org/wiki/Terrell_rotation

GENERAL CHEMISTRY explained in 19 minutes

Thu, 09 May 2024 05:08:01 +0000

ALL OF PHYSICS in 14 Minutes: https://youtu.be/ZAqIoDhornk

Everything is made of atoms. Chemistry is the study of how they interact, and is known to be confusing, difficult, complicated...let's learn General Chemistry in under 20 Minutes.

This is not ALL of Chemistry, as fields like "Organic Chemistry" deserve videos of their own. But, this is the foundation, or "General Chemistry", which contains most concepts you need to know to understand other topics and fields of Chemistry.

This is a summary and revision of around 4 years of Chemistry you learn in school, with maybe some university level concepts sprinkled in the mix.
This video is a good summary for preparing for exams and finals. Maybe. Perhaps.

Now go learn all of Chemistry. And share this with your friends who suck at Chemistry

Timestamps:
00:00 Intro
00:16 Valence Electrons
00:34 Periodic Table
01:24 Isotopes
01:34 Ions
01:47 How to read the Periodic Table
02:09 Molecules & Compounds
02:27 Molecular Formula & Isomers
02:53 Lewis-Dot-Structures
03:03 Why atoms bond
03:26 Covalent Bonds
03:37 Electronegativity
03:54 Ionic Bonds & Salts
04:25 Metallic Bonds
04:59 Polarity
05:37 Intermolecular Forces
05:51 Hydrogen Bonds
06:00 Van der Waals Forces
06:20 Solubility
06:46 Surfactants
07:00 Forces ranked by Strength
07:07 States of Matter
07:28 Temperature & Entropy
07:49 Melting Points
08:01 Plasma & Emission Spectrum
08:35 Mixtures
09:24 Types of Chemical Reactions
09:45 Stoichiometry & Balancing Equations
10:16 The Mole
10:46 Physical vs Chemical Change
11:05 Activation Energy & Catalysts
11:24 Reaction Energy & Enthalpy
11:42 Gibbs Free Energy
12:50 Chemical Equilibriums
13:15 Acid-Base Chemistry
13:41 Acidity, Basicity, pH & pOH
14:43 Neutralisation Reactions
14:56 Redox Reactions
15:18 Oxidation Numbers
16:01 Quantum Chemistry

Music by Audionautix.com

27 Facts That Will Make You Question Your Existence

Wed, 24 Apr 2024 06:12:47 +0000

These 27 facts will blow your mind!Credits: https://www.buzzfeed.com/bfmp/videos/63948Check out more awesome videos at BuzzFeedVideo!https://bit.ly/YTbuzzfeedvideoGET MORE BUZZFEED:https://www.buzzfeed.comhttps:....//www.buzzfeed.com/v flagship channel. Sometimes funny, sometimes serious, always shareable. New videos posted daily!To see behind-the-scenes & more, follow us on Instagram @buzzfeedvideo http://bit.ly/2JRRkKULove BuzzFeed? Get the merch! BUY NOW: https://goo.gl/gQKF8m

Michio Kaku: The Universe in a Nutshell (Full Presentation) | Big Think

Fri, 19 Apr 2024 01:30:44 +0000

Michio Kaku: The Universe in a Nutshell
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OVERVIEW:

In a profoundly informative and deeply optimistic discussion, Professor Michio Kaku delivers a glimpse of where science will take us in the next hundred years, as warp drives, teleportation, inter-dimensional wormholes, and even time travel converge with our scientific understanding of physical reality. While firing up our imaginations about the future, he also presents a succinct history of physics to the present.
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MICHIO KAKU:

Dr. Michio Kaku is the co-founder of string field theory, and is one of the most widely recognized scientists in the world today. He has written 4 New York Times Best Sellers, is the science correspondent for CBS This Morning and has hosted numerous science specials for BBC-TV, the Discovery/Science Channel. His radio show broadcasts to 100 radio stations every week. Dr. Kaku holds the Henry Semat Chair and Professorship in theoretical physics at the City College of New York (CUNY), where he has taught for over 25 years. He has also been a visiting professor at the Institute for Advanced Study as well as New York University (NYU).
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TRANSCRIPT:

My name is Professor Michio Kaku. I’m a professor of theoretical physics at the City University of New York and I specialize in something called string theory. I’m a physicist.
Some people ask me the question, “What has physics done for me lately? I mean, do I get better color television, do I get better internet reception with physics?” And the answer is yes. You see, physics is at the very foundation of matter and energy. We physicists invented the laser beam, we invented the transistor. We helped to create the first computer. We helped to construct the internet. We wrote the World Wide Web. In addition, we also helped to invent television, radio, radar, microwaves, not to mention MRI scans, PET scans, x-rays. In other words, almost everything you see in your living room, almost everything you see in a modern hospital, at some point or other, can be traced to a physicist.

Now, I got interested in physics when I was a child. When I was a child of eight, something happened to me that changed my life and I wanted to be part of this grand search for a theory of everything. When I was eight, a great scientist had just died. I still remember my elementary school teacher coming into the...

To read the full transcript and for more info, please visit https://bigthink.com/videos/un....iverse-in-a-nutshell
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Other Frequent contributors include Michio Kaku & Neil DeGrasse Tyson.

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Black Hole Apocalypse: What's Inside a Black Hole? | Full Documentary | NOVA | PBS

Thu, 11 Apr 2024 03:19:55 +0000

Take a mind-blowing voyage to the most powerful and mysterious objects in the universe. (Aired January 10, 2018)

Official Website: https://to.pbs.org/3P9TdDL | #novapbs

Black holes are the most enigmatic and exotic objects in the universe. They’re also the most powerful, with gravity so strong it can trap light. And they’re destructive, swallowing entire planets, even giant stars. Anything that falls into them vanishes…gone forever. Now, astrophysicists are realizing that black holes may be essential to how our universe evolved—their influence possibly leading to life on Earth and, ultimately, us. In this two-hour special, astrophysicist and author Janna Levin takes viewers on a journey to the frontiers of black hole science. Along the way, we meet leading astronomers and physicists on the verge of finding new answers to provocative questions about these shadowy monsters: Where do they come from? What’s inside? What happens if you fall into one? And what can they tell us about the nature of space, time, and gravity?

Chapters
00:00:00 Introduction
00:10:23 What Is A Black Hole?
00:18:45 How Does A Black Hole Form?
00:24:40 What Would Happen If You Traveled Into A Black Hole?
00:29:58 The First Detection of A Black Hole: Cygnus X-1
00:50:47 The Relationship of Supermassive Black Holes and Galaxies
01:12:21 How Do Black Holes Grow?
01:30:56 New Technologies Giving New View of Black Holes
01:50:02 Conclusion

© 2018 WGBH Educational Foundation

All rights reserved

This program was produced by GBH, which is solely responsible for its content.

This program is made possible by viewers like you. Support your local PBS station here: https://pbs.org/donate/

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#blackhole #spacedocumentary #supernova #blackholemysteries #blackholetv #blackholemysteries #astrophysics #astrophysicist #astronomy #physics #einstein #gravity #eventhorizontelescope #galaxy #jameswebbspacetelescope #ligonierministries

What is a black hole, what is inside a black hole, gravitational field, star life cycle, death of a star, cygnus x-1, quasar, what is a quasar, supermassive black hole facing earth, milky way galaxy supermassive black hole, supermassive black hole earth, event horizon black hole, LIGO

How Big is The Universe?

Thu, 11 Apr 2024 03:16:37 +0000

How Big is The Universe?

We begin at the familiar blue and green orb we call home and zoom out to explore the vastness of space. From the Moon, our closest cosmic neighbor, to the edges of the observable universe, prepare to be astonished by the sheer scale of everything that exists.

Travel with us as we venture past the Moon, understanding its distance in terms we can grasp. Witness the Sun, not just as a source of light, but as a milestone in the vastness of our solar system. We don't stop there; Mars, Neptune, and the outer reaches of our solar neighborhood await.

Discover the awe-inspiring distances to the Voyager 1 probe, the enigmatic Oort Cloud, and the neighboring star system of Alpha Centauri. As we sail through the Milky Way, understand our position in the grand scheme of things, where our entire history is just a whisper in the cosmic wind.

Our voyage takes us further, to the Local Group, Virgo Supercluster, and the staggering Laniakea Supercluster. We contemplate the Great Attractor's pull and our place in this immense heaven.

Confront the boundaries of the observable universe and ponder the mystery of what lies beyond. This video is not just a journey through space but a journey of perspective. Join us in marveling at the universe's grandeur and our humble place within it.

Subscribe to Science Time: https://www.youtube.com/sciencetime24

#universe #sciencetime #space