Artificial life | Self-replicating machines
Gray goo (also spelled as grey goo) is a hypothetical global catastrophic scenario involving molecular nanotechnology in which out-of-control self-replicating machines consume all biomass on Earth while building many more of themselves, a scenario that has been called ecophagy (the literal consumption of the ecosystem). The original idea assumed machines were designed to have this capability, while popularizations have assumed that machines might somehow gain this capability by accident. Self-replicating machines of the macroscopic variety were originally described by mathematician John von Neumann, and are sometimes referred to as von Neumann machines or clanking replicators.The term gray goo was coined by nanotechnology pioneer K. Eric Drexler in his 1986 book Engines of Creation. In 2004, he stated "I wish I had never used the term 'gray goo'." Engines of Creation mentions "gray goo" as a thought experiment in two paragraphs and a note, while the popularized idea of gray goo was first publicized in a mass-circulation magazine, Omni, in November 1986. (Wikipedia).
What is Dark Matter? A Mystery of the Universe
You've probably heard the term Dark Matter, but what is it, and how do we know it exists? Instagram: http://instagram.com/thephysicsgirl Twitter: http://www.physicsgirl.org/twitter Facebook: http://www.physicsgirl.org/facebook http://www.physicsgirl.org/
From playlist Space and the Universe
In this video I explain just what physicists mean when they speak about "dark matter" and what reasons we have to think that dark matter exists. In my two follow-up videos, I speak about the alternative explanation, modified gravity, and explain why the right solution might well be a combi
From playlist Physics
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From playlist Science Unplugged: Cosmology
How long until the gray goo destroys Earth? - Week 7 - Lecture 4 - Mooculus
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From playlist Ohio State: Jim Fowler's Calculus One Lectures | CosmoLearning Mathematics
What is Dark Matter? - Instant Egghead #1
Dark Matter is weird stuff -- "non-baryonic matter," as Scientific American editor George Musser puts it in this minute and a half take on the nature of the mystery substance that makes up the majority of the mass in our universe. This is episode 1 of our new video podcast, which you can s
From playlist Scientific American Channel
What kind of particles comprise the dark matter?
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From playlist Science Unplugged: Dark Matter
Jonathan defines what white noise actually is and how it's used to mask other annoying sounds. Learn more at HowStuffWorks.com: http://science.howstuffworks.com/question47.htm Share on Facebook: http://goo.gl/n7YNrZ Share on Twitter: http://goo.gl/Fq9InS Subscribe: http://goo.gl/ZYI7Gt V
From playlist Episodes hosted by Jonathan
What If We're All Minions?? | Idea Channel | PBS Digital Studios
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateidea Is hateful Minion press still good Minion press? Tweet us! http://bit.ly/pbsideachanneltwitter Idea Channel Facebook! http://bit.ly/pbsideachannelfacebook Talk about t
From playlist Newest Episodes
If you're not sure what a black hole is, or even if you just need a quick refresher, Brian Greene explains what lies behind these cosmological powerhouses. Subscribe to our YouTube Channel for all the latest from World Science U. Visit our Website: http://www.worldscienceu.com/ Like us o
From playlist Science Unplugged: Black Holes
Extreme Game Boy Repair | Restore | Enhance 😃
My cousin gave me her old broken Game Boy to see if I could repair it. These consoles are so important to video game history and are becoming more valuable and rare so I really wanted to try fix it and even make it look better than the day it was born. I show you everything I did but if y
From playlist DIY
Black Hole Apocalypse — Official Trailer
Join astrophysicist Janna Levin and others as they hunt for clues about the nature of black holes. NOVA’s “Black Hole Apocalypse” premieres January 10 on PBS. NOVA on Facebook: https://www.facebook.com/NOVAonline NOVA on Twitter: @novapbs NOVA on Instagram: @novapbs
From playlist Previews
This Slimy Fish Ties Itself in Knots
Hagfish are slimy sea noodles that wear their skin like a pair of loose pajamas... and that isn't the weirdest thing about them. Subscribe to the pin club here: https://store.dftba.com/collections/bizarrebeasts You can cancel any time by emailing hello@dftba.com Visit Nautilus Live for
From playlist Hagfish!
Show Me Science! I'm Looking Through You
Show Me Some Science! is a new series of podcasts from the Little Shop of Physics. In this episode we use infrared light to look through different objects. Infrared light is a kind of light we can't see that is beyond the red end of the rainbow. Some things that are opaque to visible light
From playlist Show Me Some Science!
Life, Sex & Death Among the Dire Wolves
PBS Member Stations rely on viewers like you. To support your local station, go to http://to.pbs.org/DonateEons ↓ More info below ↓ This is not a Game of Thrones fan fiction episode. Dire wolves were real! And thousands of them died in the same spot in California. Their remains have taugh
From playlist Ancient Fauna, Flora & Fungi
We can all agree that insects have heads, right? But what exactly do they have rattling around inside there? Do insects have brains like humans? Or is it just a bunch of nerves and goo? Well join Inés and Alie to get the answers and to hear how scientists are using bugs to learn new things
From playlist Collaborations (two-way)
Hank: Eats Weird Stuff, Does Weird Things
We were pretty shocked to find out that there’s been a bizarre beast lurking in our own backyard, right here in Missoula, Montana, all along. Subscribe to the pin club here: https://store.dftba.com/collections/bizarrebeasts You can cancel any time by emailing hello@dftba.com Host: Sarah
From playlist Uploads
JavaScript Tutorial | How To Create A Dungeon Crawler Game In JS | Introduction | #gamedev
Don’t forget to subscribe! In this JavaScript tutorial, you will learn to create a Dungeon Crawler Game in JavasScript. This tutorial will guide you through the main aspects of creating the dungeon crawler game. Together we will build game features with small iterations and discuss how d
From playlist Create A Dungeon Crawler Game In JS
D3O: The Life-Saving Protective Goo
Scrolling through your mobile, you get distracted for a moment, and the phone slips from your hand. While watching the freefall of the phone for what feels like an eternity, you pray that nothing happens to the screen. There are various kinds of screen protectors on the market, but none
From playlist Radical Innovations
The hidden meanings of yin and yang - John Bellaimey
View full lesson here: http://ed.ted.com/lessons/the-hidden-meanings-of-yin-and-yang-john-bellaimey The ubiquitous yin-yang symbol holds its roots in Taoism/Daoism, a Chinese religion and philosophy. The yin, the dark swirl, is associated with shadows, femininity, and the trough of a wave
From playlist The Way We Think
What Will Monsters of the Future Look Like?
Share on Facebook: http://on.fb.me/1zfBmyr Whether it’s zombies, ghosts, or vampires, we’ve created monsters to help us conceptualize our fears and anxieties. Now that we live in an era of artificial intelligence, the Internet of Things, and big data - what does this mean for monsters of
From playlist Jonathan's Top Videos of 2014!