Why do mirrors flip horizontally (but not vertically)?
Why do mirrors flip horizontally (but not vertically)?
Why do mirrors flip horizontally (but not vertically)?

Why do mirrors flip horizontally (but not vertically)? - Physics Girl

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Video Related Why do mirrors flip horizontally (but not vertically)? - Physics Girl

Are perpetual motion machines possible?

A wheel that spins forever; a bird that never quenches its thirst; a clock that never stops ticking, an endless source of free energy. These are but the dreams of inventors striving to make perpetual motion machines, machines that can work forever without any energy input. Are these machines possible without violating the laws of physics? No. ‪http://physicsgirl.org/ ‪http://twitter.com/thephysisgirl ‪http://facebook.com/thephysicsgirl ‪http://instagram.com/thephysicsgirl Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Unbalanced wheel designed, laser cut and assembled by engineer Kyle Kitzmiller - kylekitzmiller.com Writer: Sophia Chen Editors: Jabril Ashe and Dianna Cowern Host: Dianna Cowern Weather footage: NASA Goddard Zimara’s Windmill drawing: Burton Lee Potterveld Cox’s Timepiece drawing - Mr. Cox’s Perpetual Motion,...

Only the Most Attentive 4% Will Pass This Test

Are you good at spotting details? Even if you’ve got no ambitions to surpass Sherlock Holmes, learning to pay attention to small details is no trifling matter. This skill can prove helpful in a variety of everyday situations. Being able to notice something that not that many people would pay close attention to broadens your mind and overall improves your instincts and intuition. Bright Side presents you with a quiz that’ll help evaluate your abilities to pay attention to the smallest things. Do you think you can pass all the tasks? TIMESTAMPS 15 pencils 0:41 2 pictures 1:45 A bunch of pears 2:46 A beautiful parrot 3:44 A small fox 4:40 A fish 5:43 Peacocks 6:43 A beautiful landscape 7:43 Shiny small balls 8:46 A strange...

World's Roundest Object!

The world's roundest object helps solve the longest running problem in measurement -- how to define the kilogram. Support Veritasium on Patreon: http://bit.ly/VePatreon A kilogram isn't what it used to be. Literally. The original name for it was the 'grave', proposed in 1793 but it fell victim to the French Revolution like its creator, Lavoisier. So begins the tale of the most unusual SI unit. The kilogram is the only base unit with a prefix in its name, and the only one still defined by a physical artifact, the international prototype kilogram or IPK. But the problem with this definition has long been...

What Is A Paradox?

Brilliant: https://brilliant.org/vsauce2 Thanks to Brilliant for sponsoring this episode. *** SOURCES LINKS AND MORE *** “The Ways of Paradox and Other Essays” by Willard Van Orman Quine: https://www.amazon.com/Ways-Paradox-Other-Essays-Revised/dp/0674948378/ Zeno of Elea, Stanford Encyclopedia of Philosophy: https://plato.stanford.edu/entries/zeno-elea/ Zeno’s Paradoxes, Stanford Encyclopedia of Philosophy: https://plato.stanford.edu/entries/paradox-zeno/ Convergent Series, Khan Academy: https://www.khanacademy.org/math/calculus-home/series-calc/seq-conv-diverg-calc/v/convergent-and-divergent-sequences “Game Show Problem” by Marilyn vos Savant, Parade Magazine, 1990: http://marilynvossavant.com/game-show-problem/ “Solution to the Grandfather Paradox” by minutephysics: https://youtu.be/XayNKY944lY “The Faint Young Sun Paradox!” by MinuteEarth: https://youtu.be/qbnaes8X4iQ *********************************** Vsauce Links Website: http://www.Vsauce.com Twitter: https://twitter.com/VsauceTwo Facebook: https://www.facebook.com/VsauceTwo Hosted, Produced, Writing Contributions And Edited by Kevin Lieber Instagram: http://instagram.com/kevlieber Twitter: https://twitter.com/kevleeb Website: http://kevinlieber.com Research And Writing Contributions by Matthew Tabor https://twitter.com/matthewktabor Writing Contributions by Michael Stevens https://youtube.com/Vsauce VFX By Eric Langlay https://www.youtube.com/c/ericlanglay Special Thanks Paula Lieber https://www.etsy.com/shop/Craftality Select...

10 Photos That Prove Your Life Is A Lie!

Top 10 Photos That Prove Your Life Is A Lie! Subscribe to Top 10s ► https://goo.gl/zvGBHe Description: Charlie from Top 10s counts down the top 10 Photos That Prove Your Life Is A Lie! For issues or inquires please email toptens@europe.com or message via YouTube. Social media: Subscribe ► https://goo.gl/zvGBHe Twitter ► https://goo.gl/VGwAQF Instagram ► https://goo.gl/9xUb4m Snapchat ► https://goo.gl/TDvT5e Facebook ► https://goo.gl/UTMgnZ App ► https://goo.gl/TBY2GD Google+ ► https://goo.gl/KhVsyt Intro music: MRVLZ - Never https://soundcloud.com/mrvlz

This phenomenon only happens in Hawaii . . . and Cuba & Nigeria & Indonesia & Peru & Sudan & Laos &…

There are apparently no shadows in these images. But they were taken during the brightest part of the day. This episode is brought to you by Squarespace: http://www.squarespace.com/physicsgirl There are only certain parts of the year and certain times of day when you can experience the subsolar point or Lahaina noon. There appears to be no shadow because the sun is directly overhead. This phenomenon happens twice a year for latitudes between the tropic of cancer and the tropic of capricorn at solar noon, when the sun is highest in the sky. But you have to be in the right place at...

A mirror paradox, Klein bottles and Rubik's cubes

The Mathologer puts the latest $2000 addition to his Klein bottle collection to work. A couple of first-ever fun mathematical stunts in this video. This video finishes with a puzzle for you to think about. We posted a video with the solution on 1 August 2015: https://youtu.be/ZMC61C5tigA Enjoy! Burkard Polster and Giuseppe Geracitano P.S.: Most of of Burkard's glass Klein bottles as well as the Klein bottle hat were made by Cliff Stoll of ACME Klein bottles (www.kleinbottle.com). The metal 3d-printed Klein bottle opener was made by Bathsheba Grossman (www.bathsheba.com).

Physics marble track review part one // Homemade Science with Bruce Yeany

track material is easy to work with and cheap. it is called shelf bracket tracks or shelf uprights. I have seen various hardware stores and building supply stores carry it, one company that makes it is Rubbermaid. E5 shelf upright. available at Home Depot, Last time I checked, Lowes does not carry it https://www.homedepot.com/p/Rubbermaid-E5-72-in-Zinc-Upright-FG4B9200ZINC/100177025 Introduction song. is an Apple jingle found in the iMovie media files, the title is called "catwalk, medium" For more information and explanations on any of the tracks demonstrated in this video, see the...

Lenz's Law

GET A FREE AUDIOBOOK! http://audible.com/michaelstoys or text michaelstoys to 500-500 LINKS TO LEARN MORE BELOW! dong on twitter: https://twitter.com/doonlinenowguys dong on instagram: https://www.instagram.com/doonlinenowguys my reddit post about DONG and Vsauce1: https://www.reddit.com/r/vsauce/comments/86a49b/can_anyone_tell_me_why_the_vsauce_videos_of/dw4fhoc/ VIDEOS MENTIONED: The episode of Mind Field at UC Irvine. We look at how playing video games can effect the shape and size of your brain: https://www.youtube.com/watch?v=1RHsAUyFCAM How dangerous are magnetic items near an MRI magnet? https://www.youtube.com/watch?v=6BBx8BwLhqg Veritasium: https://www.youtube.com/watch?v=NqdOyxJZj0U PhysicsFun on instagram: https://www.instagram.com/physicsfun Science Bob and magnetic cereal: https://www.youtube.com/watch?v=n9s8CbP7ExY wbeaty's video on how to make a generator: https://www.youtube.com/watch?v=k7Sz8oT8ou0 MRI quench: https://www.youtube.com/watch?v=9SOUJP5dFEg Levitating frog: http://www.ru.nl/hfml/research/levitation/diamagnetic/ Faraday's Law interactive: https://phet.colorado.edu/sims/html/faradays-law/latest/faradays-law_en.html Lenz's Law: https://en.wikipedia.org/wiki/Lenz%27s_law Lenz's Law interactive: https://micro.magnet.fsu.edu/electromag/java/lenzlaw/ Ann Druyan: https://en.wikipedia.org/wiki/Ann_Druyan Voyager Golden Record: https://en.wikipedia.org/wiki/Voyager_Golden_Record ***CREDITS*** Hosted by Michael Stevens Edited by Hannah Canetti and...

20 Common Characteristics of Highly Intelligent People

20 Common Characteristics of Highly Intelligent People. Create stunning video intro for your channel here http://bit.ly/2sEaMPK . In this video, I'm going to show you 20 common characteristics of highly intelligent people. But before we start, make sure to like this video and subscribe our channel so you won't miss any interesting updates in the future guys! Also, don't forget to check link on the description below to see our interesting offer that might be useful for you. Here are 20 common characteristics to look for in highly intelligent people: 1. THEY’RE DISORGANIZED 2. THEY’RE ADAPTABLE 3. THEY USE CURSE WORDS 4. THEY UNDERSTAND LIMITS 5. See...

Why Hawaii's volcano is so UNUSUAL

Hawaii is known for its volcanoes, but most volcanoes on earth exist along tectonic plate lines. Hawaii does not! What causes Hawaii to form, and how is it related to the mystery of a magnetic bar code across the Pacific Ocean? Host Dianna Cowern chatted with geologist Noah Randolph-Flagg from UC Berkeley while hiking on the island of Kauai. Check out the It's Okay to Be Smart video on Plate Tectonics! https://www.youtube.com/watch?v=KB7HzF2O3Kg Producer/Host: Dianna Cowern Editor: Jabril Ashe Research: Sophia Chen Animations: Kyle Norby http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Convection Footage: Singing Geologist https://www.youtube.com/watch?v=0mUU69ParFM Volcano Footage: Kenneth https://www.youtube.com/watch?v=m55I4I0peS8 Satellite images of Hawaii: NASA Stock Footage: Pixabay

Why Not Admit There is a Problem With Math and Music? Dan Formosa at TEDxDrexelU

NOTE FROM TED: We've flagged this talk, which was filmed at a TEDx event, because it appears to fall outside TEDx's curatorial guidelines for its assertions about math and music. TEDx events are independently organized by volunteers. The guidelines we give TEDx organizers are described in more detail here: http://storage.ted.com/tedx/manuals/tedx_content_guidelines.pdf Dan Formosa's work covers many areas of design. A unifying theme is the idea that great design requires that we first understand people. This talk is not a class in math or music. It's a discussion about challenges to understanding math and music, topics for which literacy rates are low. Both...

Quantum Entanglement & Spooky Action at a Distance

Does quantum entanglement make faster-than-light communication possible? What is NOT random? http://bit.ly/NOTrandoVe First, I know this video is not easy to understand. Thank you for taking the time to attempt to understand it. I've been working on this for over six months over which time my understanding has improved. Quantum entanglement and spooky action at a distance are still debated by professors of quantum physics (I know because I discussed this topic with two of them). Does hidden information (called hidden variables by physicists) exist? If it does, the experiment violating Bell inequalities indicates that hidden variables must update faster than light -...

What Does a 4D Ball Look Like in Real Life? Amazing Experiment Shows Spherical Version of Tesseract

Follow me on: Get your subscription box here: https://www.theactionlab.com Twitter: https://twitter.com/theactionlabman Facebook: https://www.facebook.com/theactionlabrat In this video I show you what a movement through a fourth spatial dimension would look like in our 3D World. I show you what crazy stuff would happen if a 4th dimensional being were to move 4D objects through our 3D space. Weird things happen like the sudden appearing of objects, shape changing, sudden mirror imaging and more! This video is helpful to understanding a 4th spatial dimension using the simplest object...a sphere. This is easier than a tesseract to understand because it looks the same from all directions. WARNING: If you...

What do programmers actually do?

I left a physics job to do software engineering. Was it worth it? What do software engineers actually do? Thank you to YouTube for sponsoring this video! http://yt.be/jobsforphysicsgirls Subscribe to physics girl: https://www.youtube.com/subscription_center?add_user=physicswoman Software engineers and programmers code everything from virtual reality to artificial intelligence to unique instruments like engineer Ben Bloomberg made for musician Jacob Collier. Are you considering new job or career? Me too. http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl PO Box 9281 San Diego, CA 92169 Creator: Dianna Cowern Editing: Jabril Ashe Animations: Kyle Norby and Jabril Ashe Thanks to Ben Bloomberg and Kyle Kitzmiller!

Bell's Theorem: The Quantum Venn Diagram Paradox

Featuring 3Blue1Brown Watch the 2nd video on 3Blue1Brown here: https://www.youtube.com/watch?v=MzRCDLre1b4 Support MinutePhysics on Patreon! http://www.patreon.com/minutephysics Link to Patreon Supporters: http://www.minutephysics.com/supporters/ This video is about Bell's Theorem, one of the most fascinating results in 20th century physics. Even though Albert Einstein (together with collaborators in the EPR Paradox paper) wanted to show that quantum mechanics must be incomplete because it was nonlocal (he didn't like "spooky action at a distance"), John Bell managed to prove that any local real hidden variable theory would have to satisfy certain simple statistical properties that quantum mechanical experiments (and the theory that describes them) violate. Since then, GHZ and...

Why aren't plants black? 🌿

Why are plants green? Is there a reason plants evolved to be green, globally? What does it have to do with the color of the sunlight coming down through our atmosphere? http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Creator: Dianna Cowern Editor: Jabril Ashe Hamburger eater: Jabril Ashe Colorful Planet Artist: Ashley Warner Thanks to: Dan Walsh, Kyle Kitzmiller, Joe Hanson and Kyle Norby Sources: Black Nigrescens Plant: http://www.thedangergarden.com/2013/02/ophiopogon-planiscapus-nigrescens-my.html With permission from Loree Bohl, thedangergarden.com Green Nigrescens Plant: With permission from © Davis Landscape Architecture, London, UK http://www.davisla.com Solar spectrum adapted from: https://commons.wikimedia.org/wiki/File:Solar_Spectrum.png Chlorophyll spectrum adapted from: http://www.austincc.edu/biocr/1406/labm/ex7/prelab_7_4.htm The Functional Significance of Black-Pigmented Leaves: Photosynthesis, Photoprotection and Productivity in Ophiopogon planiscapus ‘Nigrescens’ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691134/ Functional evolution of...

What Is The Resolution Of The Eye?

Follow me: http://www.twitter.com/tweetsauce SOURCES BELOW: Hanu Dixit music: https://www.youtube.com/user/HanuDixit0003 Vsauce video about the FRAME RATE of the eye: https://www.youtube.com/watch?v=buSaywCF6E8 music from http://www.youtube.com/jakechudnow and http://www.audionetwork.com Feature Film numbers [PDF]: http://www.uis.unesco.org/culture/Documents/average-film-production-2009.xls My instagram: http://instagram.com/electricpants Carlton Bale resolution graphs: http://carltonbale.com/1080p-does-matter/ resolution links: http://www.luminous-landscape.com/tutorials/understanding-series/res-demyst.shtml http://www.cambridgeincolour.com/tutorials/cameras-vs-human-eye.htm http://mindyourdecisions.com/blog/2011/11/04/whats-the-best-seat-in-a-movie-theater/#.UxS3ifR_sYz http://1.bp.blogspot.com/-wrmbMQpXdls/UK0bV-z0ARI/AAAAAAAAED8/MdyUCdQBNhk/s1600/Bayer+Notebook.jpg http://www.digital-photo-secrets.com/tip/333/do-more-megapixels-mean-better-photo-quality/ http://www.techradar.com/news/photography-video-capture/cameras/camera-testing-resolution-charts-explained-1027585 http://www.digital-photo-secrets.com/tip/333/do-more-megapixels-mean-better-photo-quality/ Dali Painting: http://www.newpaltz.edu/news/images/hi_res/1995.011.007%20Dali%20Hi.jpg xkcd comic: http://xkcd.com/1080/ eye chart download: http://eyetestnow.com/images/snellen_block_letter_eye_chart_eye_exam_test.pdf neon color spreading: http://www.blelb.com/english/blelbspots/spot05/expspot05_en.htm Roger N. Clark calculation: http://www.clarkvision.com/imagedetail/eye-resolution.html Bad Astronomer retina display article: http://www.slate.com/blogs/bad_astronomy/2010/06/10/resolving_the_iphone_resolution.html CINEMAINA: http://www.imdb.com/title/tt0281724/?ref_=ttmd_md_nm Where's the best seat in a movie theater? http://mindyourdecisions.com/blog/2011/11/04/whats-the-best-seat-in-a-movie-theater/#.Ux8HQGR_ti_ "Endings Without Endings": http://www.nytimes.com/2007/06/17/weekinreview/17mcgr.html?_r=0 Tamara Shopsin illustrations: http://tamarashopsin.com/

Can Silence Actually Drive You Crazy?

*Watch with headphones on! Is 45 minutes really the longest anyone can stay in a perfectly silent, pitch-black room? Support Veritasium on Patreon http://bit.ly/VePatreon Check out Audible: http://bit.ly/AudibleVe Want to watch the whole hour of silence? http://youtu.be/jr1UMFC9DV0 Many stories have circulated claiming the longest anyone has stayed in an ultra-quiet anechoic chamber is 45 minutes, the reason being any longer would drive you insane. To me this sounded like unsubstantiated rubbish, like the claim the Great Wall is the only manmade structure visible from space. So I put my own psyche on the line, subjecting myself to over an hour of the most intense quiet...


These short, simple life hacks are based on physics. Detangle your headphones, remove sticker residue, check if sunglasses are polarized, cool your car faster, and avoid getting static shock! Check out these Chemistry Life Hacks on ACS Reactions! https://www.youtube.com/watch?v=mAqJmEjCy4E https://www.youtube.com/watch?v=ReGfd_s9gXA Check out ACS Reactions Channel: https://www.youtube.com/user/ACSReactions PO BOX ADDRESS: Physics Girl PO Box 9281 San Diego CA, 92169 http://physicsgirl.org/ http://twitter.com/thephysicsgirl http://facebook.com/thephysicsgirl http://instagram.com/thephysicsgirl Creator: Dianna Cowern Editor: Jabril Ashe Animations: Kyle Norby Demonstrations: Ashley Warner Advisor: Dan Walsh Thanks to Elaine Seward and ACS Reactions! Thanks to Kyle Kitzmiller and Sophia Chen Spool Car Toy made by William Osman https://www.youtube.com/channel/UCfMJ2MchTSW2kWaT0kK94Yw MORE STATIC ELECTRICITY SCIENCE https://www.youtube.com/watch?v=4S0EBxT60pw Headphone Science Source http://blogs.discovermagazine.com/seriouslyscience/2014/06/18/scientific-explanation-earphones-always-tangled/#.WabqrK2ZNE4

The Potato Paradox

Skillshare: http://skl.sh/vsauce23 Thanks to Skillshare for sponsoring this episode. Origins of Colorado Potato Beetle: https://phys.org/news/2018-03-major-potato-pest.html Colorado Potato Beetle Genome Research and Propaganda History: https://news.wisc.edu/colorado-potato-beetle-genome-gives-insight-into-major-agricultural-pest/ Czechoslovakian American Beetle Propaganda Video: https://youtu.be/28N6TSaKQ-g USDA Food Composition Data: https://ndb.nal.usda.gov/ndb/foods/show/2958?fgcd=&manu=&lfacet=&format=&count=&max=50&offset=&sort=default&order=asc&qlookup=raw+cucumber&ds=&qt=&qp=&qa=&qn=&q=&ing= *********************************** Vsauce Links Website: http://www.Vsauce.com Twitter: https://twitter.com/VsauceTwo Facebook: https://www.facebook.com/VsauceTwo Hosted, Produced And Edited by Kevin Lieber Instagram: http://instagram.com/kevlieber Twitter: https://twitter.com/kevleeb Website: http://kevinlieber.com Research And Writing Contributions by Matthew Tabor https://twitter.com/matthewktabor VFX By Eric Langlay https://www.youtube.com/c/ericlanglay Special Thanks Paula Lieber https://www.etsy.com/shop/Craftality Special Thanks Michael Stevens https://youtube.com/Vsauce Select Music By Jake Chudnow: http://www.youtube.com/user/JakeChudnow

The Best Banknote in the World!

The story (and science) behind our money. And a cool musical trick. SUBSCRIBE to BrainCraft! http://ow.ly/rt5IE Go to http://prudential.com/savemore and learn more about how you can better plan for your retirement. BrainCraft was created by Vanessa Hill (@nessyhill) and is brought to you by PBS Digital Studios. Talking psychology, neuroscience & why we act the way we do. My Twitter https://twitter.com/nessyhill | Instagram https://instagram.com/nessyhill Written, Hosted, Produced, Edited and Animated by Vanessa Hill ✌️ Sound Mix by Joel Werner http://joelwerner.com/ 🎼 With thanks to AFTRS for having us at the YouTube Pop-Up Sydney. Director: Andrew Garrick DP: Steve Arnold Production Designer: Eve Waugh And thanks to Wendy Gray,...

Seeing the Smallest Thing in the Universe

Beyond molecules and atoms, how far down can we see below the wavelength of visible light? What is the smallest possible scale in the universe? Frog animation by Matt Burns Facebook: http://www.physicsgirl.org/facebook Twitter: http://www.physicsgirl.org/twitter Updates: http://physicsgirl.org Help us translate our videos! http://www.youtube.com/timedtext_cs_panel?c=UC7DdEm33SyaTDtWYGO2CwdA&tab=2 Thanks to Kyle Kitzmiller for filming. Image Credits: SEM Images: Dartmouth Electron Microscope Facility Infrared Images: Courtesy NASA/JPL-Caltech LHC Images: CERN Historical Particle Collider: INFN-LNF www.lnf.infn.it Molecule images: IBM Atom Images: Aneta Stoldona; APS Music: Michael Miller, Kevin McLeod - "Carefree," YouTube - "On the Bach"

Adorable 3-Year-Old Periodic Table Expert Brielle

After Ellen saw Brielle's video on ellentube, she invited her to showcase her science smarts on the show!

How Does A Wing Actually Work?

Lift is an important concept, not only in flying but also in sailing. This week I'm talking to Olympic Sailor, Hunter Lowden. But before I get to the physics of sailing I thought I would explain lift since it's generally poorly understood. minutephysics http://bit.ly/Muh6CC 1veritasium http://bit.ly/MrupzL efit30 http://bit.ly/O4CMme appchat http://bit.ly/NxAMlX erikaanear http://bit.ly/MdyUzQ whoisjimmy http://bit.ly/LtFzpW numberphile http://bit.ly/numberphile Music by Nathaniel Schroeder youtube: http://bit.ly/pakJLE myspace: http://mysp.ac/qtmZQj