Is There Really An Infinite Multiverse? | Stephen Hawking’s Last Paper

Just a few days before he died, Stephen Hawking submitted one last research paper using string theory math to talk about the multiverse.

Host: Hank Green

For special, curated artifacts of this universe, check out https://scishowfinds.com/
———-
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
———-
Dooblydoo thanks go to the following Patreon supporters:
Jerry Perez, Lazarus G, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali. Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
———-
Like SciShow? Want to help support us, and also get things to put on your walls, cover your torso and hold your liquids? Check out our awesome products over at DFTBA Records: http://dftba.com/scishow
———-
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
———-
Sources:
https://link.springer.com/content/pdf/10.1007%2FJHEP04%282018%29147.pdf
https://www.eurekalert.org/pub_releases/2018-05/erc-hlp043018.php
https://www.engadget.com/2018/05/03/stephen-hawking-last-paper-published-on-multiverse-theory/
https://www.livescience.com/62459-hawking-final-paper-physics.html
https://www.popsci.com/stephen-hawking-final-paper-multiverse
http://blogs.discovermagazine.com/d-brief/2018/03/20/stephen-hawking-final-paper/
http://www.sciencemag.org/news/2018/05/stephen-hawking-s-almost-last-paper-putting-end-beginning-universe
———-
Images:
https://commons.wikimedia.org/wiki/File:Stephen_Hawking.StarChild.jpg
https://commons.wikimedia.org/wiki/File:Thomas_Hertog_(2018).jpg
https://svs.gsfc.nasa.gov/12656
https://svs.gsfc.nasa.gov/10127
https://www.nasa.gov/mission_pages/chandra/multimedia/spiral-galaxy-m81.html

Crazy tic tac bounce!? | EVERYDAY MYSTERIES

Tic tacs have the strangest behavior when you bounce them on a very hard surface. What is going on?! Find out the physics.

Visit Lockheed Martin’s website
https://www.lockheedmartin.com/us/products/gps.html and watch production
of GPS III and how this technology will improve your daily life.

http://physicsgirl.org/
http://twitter.com/thephysicsgirl
http://facebook.com/thephysicsgirl
http://instagram.com/thephysicsgirl

Creator: Dianna Cowern
Editing: Jabril Ashe
Animations: Kyle Norby

Check out Darren’s channel:
https://www.youtube.com/beyondslowmotion
Check out Todd and Joe’s channel:
https://www.youtube.com/kumakumafilms

PO Box 9281
San Diego, CA 92169

How Neutrons Changed Everything

Without neutrons, harnessing nuclear energy would be impossible.
Try Audible free for 30 days: http://audible.com/veritasium

I have a new documentary coming out in a few months – sign up here to be notified and see a sneak preview: http://vitamaniathemovie.com

Special thanks to Patreon supporters:
Tony Fadell, Donal Botkin, Michael Krugman, Jeff Straathof, Zach Mueller, Ron Neal, Nathan Hansen, Yildiz Kabaran,
Terrance Snow

A few years ago I made a documentary about uranium, radioactivity and radiation. I always thought of the characters in our story as the scientists and maybe the uranium nucleus itself. It was only through making the documentary that I realized the real hero of the story is the neutron. Without a neutral nuclear particle, it would be virtually impossible to release the energy from the nucleus. But with it, and the idea of a chain reaction, nuclear energy went from science fiction to reality. That is something I had not grasped as clearly before and it motivated me to make this video.

Filmed by Raquel Nuno.

Relativity of Simultaneity | Special Relativity Ch. 4

Go to http://brilliant.org/MinutePhysics for 20% off a premium subscription to Brilliant!

Mark Rober’s youtube channel: https://www.youtube.com/markrober

The previous videos in this series:
Chapter 1: Why Relativity is Hard https://www.youtube.com/watch?v=1rLWVZVWfdY&
Chapter 2: Spacetime Diagrams https://www.youtube.com/watch?v=hTxWAQGgeQw
Chapter 3: Lorentz Transformations https://www.youtube.com/watch?v=Rh0pYtQG5wI

This video is chapter 4 in my series on special relativity, and it covers how things that appear simultaneous from one perspective in our universe aren’t simultaneous from other moving perspectives – that is, from inertial reference frames moving at different speeds. This is explained via the Lorentz transformation of coordinates of the events in question, enacted with a mechanical minkowski diagram, aka mechanical Lorentz transformation, aka spacetime globe.

Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/

MinutePhysics is on twitter – @minutephysics
And facebook – http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) – http://bit.ly/qzEwc6

Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!

Created by Henry Reich

The Black Hole Bomb and Black Hole Civilizations

To support Kurzgesagt and learn more about Brilliant, go to https://www.brilliant.org/nutshell and sign up for free. The first 688 people that go to that link will get 20% off the annual Premium subscription.

Kurzgesagt Newsletter: http://eepurl.com/cRUQxz

Support us on Patreon so we can make more videos (and get cool stuff in return): https://www.patreon.com/Kurzgesagt?ty=h

Kurzgesagt merch: http://bit.ly/1P1hQIH

Soundcloud: https://bit.ly/2JhMwdR
Bandcamp: https://bit.ly/2F5unOc
Facebook: https://bit.ly/2GIoZlH

Michael Watson, Christos Kantas, master994, Patrick Norman, Ajay Panicker, Ali B, khl4us, Eduardo Ornelas, David Mendez, Ozaiy, Devin Bray, Jimmy Jimenez, Bryant Gabriel, Warp Institute, Ezgi Ceylan, Kaliam, Corcoran Smith, Grzegorz Matczak, Scott Enand, Martin Westphal, cagedmoney, Tanner Wildauer, Alex Hamil, hbarsquared, NetherLynx, Max Hermann, Drouhet, Grace McFarland, David Engel, Simone Ramello, Kevin Luther, Jacob Johnson, Jeffrey Mathis, Jeffrey Blatt, Robert R., Conner Martin, John J., Colin O, Marco Ehrler, Kevin Tavarez, Dolphin, Andrew Gozzard, Ivan Galinskiy, Alexis Osipenco, Kerstin Bo, Moonyoung Lee, Oliver Clark, Alex Gorstan, Mehmed Mutapcic, Ben Stewart, Alexander Frase, Zain, junsuim, Nikita Kulakov, Benjamin Ulseth, Daniel Rapp, Benjamin Hibbert, Mingyi Cisar, Ginomari Rallos, William Corrigan, Jerremy Goris, Greg Levy, Jan Dvořák, Ian Dejong, Jas Sun, Matthew Caruso, Ed Barmettler, Ben Ray, Tom Trval, Aliouch, bryce Kolton, Dallas Nolen, Rashmi Mallik, 804R, Avi Botbol, Дмитрий Созинов, FOXFYRE, Hamza, Martin Hult

Help us caption & translate this video!

http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2

The Black Hole Bomb and Black Hole Civilizations

Neil deGrasse Tyson Explains the Tides

A deep dive into the complex, beautiful phenomenon of tides with Neil deGrasse Tyson and Chuck Nice. Get a closer look at https://brilliant.org/StarTalk where you’ll discover more about the gravitational forces that keep our waves rolling.

**********************************
Get 20% off Brilliant: https://brilliant.org/StarTalk/
***********************************

For more exclusive content and commercial-free full episodes, subscribe to StarTalkAllAccess.com

If you love StarTalk Radio, don’t miss out on any StarTalk news. Sign up for our free newsletter: http://www.startalkradio.net/newsletter/youtube/

Catch up with StarTalk Radio around the web:
iTunes – http://bit.ly/SOHDg6
SoundCloud – https://soundcloud.com/startalk
Stitcher – http://www.stitcher.com/podcast/startalk
TuneIn – http://tunein.com/radio/StarTalk-Radio-p334521/
Google Play Music – https://play.google.com/music/m/I6lczawbvvafjdburzbcc23aacu?t=StarTalk_Radio
Twitter – https://twitter.com/StarTalkRadio
Facebook – http://www.facebook.com/StarTalkRadio
Google+ – https://plus.google.com/+startalkradio
Snapchat – https://www.snapchat.com/add/startalk-radio
Pinterest – http://pinterest.com/startalk/
Tumblr – http://startalkradio.tumblr.com/
Instagram – http://instagram.com/startalkradio
The List App – https://li.st/startalkradio

——
Hosts
Neil deGrasse Tyson, Chuck Nice

Director
Dave Wiskus

Writers
PJ Scott-Blankenship, Josh Silverman

Animation Director
Bård Edlund

Animator
David Powell

Editor
Eric Schneider

Sound Designer
Jay Pellizzi

Music
Airplane Mode

Producers
Amanda McLoughlin, Ben Ratner

StarTalk Radio Executive Producers
Neil deGrasse Tyson, Helen Matsos

StarTalk Radio Producers
Laura Berland, Jeffrey Lee Simons, Lindsey N. Walker, Johnny Bontemps

Brilliant.org Producers
Calvin Lin, Josh Silverman

Why Is It So Hard to Fix Traffic?

Fixing traffic seems easy—just add more roads, right? Turns out that this is a problem studied by physicists and psychologists alike, with no easy answers.

Hosted by: Hank Green

Head to https://scishowfinds.com/ for hand selected artifacts of the universe!
———-
Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow
———-
Dooblydoo thanks go to the following Patreon supporters: Jerry Perez, Lazarus G, Kelly Landrum Jones, Sam Lutfi, Kevin Knupp, Nicholas Smith, D.A. Noe, alexander wadsworth, سلطان الخليفي, Piya Shedden, KatieMarie Magnone, Scott Satovsky Jr, Charles Southerland, Bader AlGhamdi, James Harshaw, Patrick D. Ashmore, Candy, Tim Curwick, charles george, Saul, Mark Terrio-Cameron, Viraansh Bhanushali, Kevin Bealer, Philippe von Bergen, Chris Peters, Justin Lentz
———-
Looking for SciShow elsewhere on the internet?
Facebook: http://www.facebook.com/scishow
Twitter: http://www.twitter.com/scishow
Tumblr: http://scishow.tumblr.com
Instagram: http://instagram.com/thescishow
———-
Sources:
http://www.physics.upenn.edu/liugroup/jamming.html
https://journals.aps.org/pre/abstract/10.1103/PhysRevE.48.3290
https://www.theatlantic.com/magazine/archive/2000/12/the-physics-of-gridlock/378457/
http://jliszka.github.io/2013/10/01/how-traffic-actually-works.html
https://www.researchgate.net/publication/243567449_Shock_Wave_Relation_Containing_Lane_Change_Source_Term_for_Two-Lane_Traffic_Flow
https://books.google.com/books?id=dHW1BQAAQBAJ&pg=PA509&lpg=PA509#v=onepage&q&f=false
https://link.springer.com/chapter/10.1007/978-3-540-77074-9_41
http://homepage.ruhr-uni-bochum.de/Dietrich.Braess/Paradox-BNW.pdf
https://www.forbes.com/sites/quora/2016/10/20/bad-traffic-blame-braess-paradox/
https://papers.ssrn.com/sol3/papers.cfm?abstract_id=783424
http://www.vtpi.org/gentraf.pdf
https://www.theguardian.com/environment/2006/nov/01/society.travelsenvironmentalimpact
https://grist.org/infrastructure/2011-04-04-seoul-korea-tears-down-an-urban-highway-life-goes-on/
http://legacy.wbur.org/2012/07/12/big-dig-effect
https://www.youtube.com/watch?v=iHzzSao6ypE
https://pdfs.semanticscholar.org/a59b/0aa97491aed923a38742142fc6492e51b080.pdf
https://www.ncbi.nlm.nih.gov/pubmed/7375327
https://www.wsj.com/articles/one-driver-can-prevent-a-traffic-jam-1476204858
https://vtechworks.lib.vt.edu/bitstream/handle/10919/55073/811079.pdf?sequence=1
http://iopscience.iop.org/article/10.1088/1367-2630/aa95f0
https://www.quora.com/At-a-red-light-why-do-some-drivers-leave-a-huge-gap-between-themselves-and-the-car-in-front-of-them
https://www.sciencedaily.com/releases/2016/09/160913125211.htm
http://www.telegraph.co.uk/news/science/science-news/8011029/Aggressive-and-timid-drivers-cause-traffic-jams-scientists-discover.html
https://link.springer.com/chapter/10.1007%2F978-3-642-24660-9_25
https://www.nytimes.com/2016/10/13/us/why-last-second-lane-mergers-are-good-for-traffic.html

Media:
https://commons.wikimedia.org/wiki/File:Miami_traffic_jam,_I-95_North_rush_hour.jpg
https://commons.wikimedia.org/wiki/File:Seoul-Restoration_site_02.jpg
https://commons.wikimedia.org/wiki/File:San_Francisco-Embarcadero_Freeway_demolition.jpg
https://commons.wikimedia.org/wiki/File:San_Francisco_(5765603478).jpg
https://commons.wikimedia.org/wiki/File:Cheonggyecheon.jpg
https://commons.wikimedia.org/wiki/File:Jazda_na_suwak_ulica_Starzy%C5%84skiego_wjazd_na_Most_Gda%C5%84ski_w_Warszawie.JPG

Can You Bend Light Like This?

You can learn more at https://curiositystream.com/smart
Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub
↓↓↓ More info and sources below ↓↓↓

The other day I got bored and noticed this weird thing happened when I held my finger up to my eye, so I had to science it and figure it out! Let me know if you try these light-bending experiments too, especially that last one that I can’t quite explain yet…

———–
FOLLOW US:

Merch: https://store.dftba.com/collections/its-okay-to-be-smart
Facebook: http://www.facebook.com/itsokaytobesmart
Twitter:@DrJoeHanson @okaytobesmart
Tumblr: http://www.itsokaytobesmart.com
Instagram: @DrJoeHanson

SEND US STUFF:

It’s Okay To Be Smart
PO Box 303356
Austin, TX 78703
USA

BOOKS WE’VE FEATURED:
http://smart-books.tumblr.com/

———–
It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Joe Hanson, Ph.D.
Creative Director: David Schulte
Editor/animator: Karl Boettcher and Derek Borsheim
Producer: Stephanie Noone and Amanda Fox

Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock http://www.shutterstock.com

Lorentz Transformations | Special Relativity Ch. 3

Go to http://brilliant.org/MinutePhysics for 20% off a premium subscription to Brilliant!

Mark Rober’s youtube channel: https://www.youtube.com/markrober

The previous videos in this series:
Chapter 1: Why Relativity is Hard https://www.youtube.com/watch?v=1rLWVZVWfdY&
Chapter 2: Spacetime Diagrams https://www.youtube.com/watch?v=hTxWAQGgeQw

This video is chapter 3 in my series on special relativity, and it covers boosts, galilean transformations, newtonian relativity, and of course Lorentz transformations, the constancy of the speed of light, relative changes of velocity between inertial reference frames, etc – some of the stuff Einstein figured out. I introduce the mechanical minkowski diagram, aka mechanical Lorentz transformation, aka spacetime globe.

Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics
Link to Patreon Supporters: http://www.minutephysics.com/supporters/

MinutePhysics is on twitter – @minutephysics
And facebook – http://facebook.com/minutephysics
And Google+ (does anyone use this any more?) – http://bit.ly/qzEwc6

Minute Physics provides an energetic and entertaining view of old and new problems in physics — all in a minute!

Created by Henry Reich

What stretching actually does to your body ft. Sofie Dossi

Sofie’s video: https://www.youtube.com/watch?v=790uPstACBE
Sofie’s channel: https://www.youtube.com/channel/UCF0_hwTeQ73IhJuEtsUbEtA

Ever wondered, what does stretching do to your muscles and your body? What in the best way to stretch? Science has some answers.

Beighton Score Test: https://www.ehlers-danlos.com/assessing-joint-hypermobility/

Check out USC’s other Biokinesiology and Physical Therapy research: pt.usc.edu

Creator: Dianna Cowern
Editing: Jabril Ashe
Research: Sofia Chen

Thanks to:
Sofie Dossi, Zak Dossi, and K. Michael Rowley!

http://physicsgirl.org/
http://twitter.com/thephysicsgirl
http://facebook.com/thephysicsgirl
http://instagram.com/thephysicsgirl

PO Box 9281
San Diego, CA 92169

Sources:
https://www.ncbi.nlm.nih.gov/pubmed/29506306
https://www.ncbi.nlm.nih.gov/pubmed/16845345
https://www.ncbi.nlm.nih.gov/pubmed/27367916
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3273886/
https://www.ncbi.nlm.nih.gov/pubmed/18518669
http://medind.nic.in/jau/t06/jaut06p3.pdf
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4769315/

More interesting reading:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2371707/