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The Bohr Atom
06:21

The Bohr Atom

004 - The Bohr Atom In this video Paul Andersen describes the major parts of an atom and explains how the Bohr Model more accurately represents the location of electrons around the nucleus. Niels Bohr refined the Rutherford model to account for spectra. Do you speak another language? Help me translate my videos: http://www.bozemanscience.com/translations/ Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: "File:Emission Spectrum-H.svg." Wikipedia, the Free Encyclopedia. Accessed May 3, 2014. http://en.wikipedia.org/wiki/File:Emission_spectrum-H.svg. "File:Emission Spectrum-H.svg." Wikipedia, the Free Encyclopedia. Accessed May 3, 2014. http://en.wikipedia.org/wiki/File:Emission_spectrum-H.svg. "File:Fraunhofer Lines.svg." Wikipedia, the Free Encyclopedia. Accessed May 2, 2014. http://en.wikipedia.org/wiki/File:Fraunhofer_lines.svg. information, This file is lacking author. English: Colorful Spectrum simulationEspañol: Espectro de Colores de La Luz visibleEsperanto: Koloroj Videblaj中文（简体）‎: 软件模拟的可见光谱。中文（繁體）‎: 軟件模擬的可見光譜。, August 27, 2008. Digitally created by Deborah S Krolls, December 13, 2004. http://commons.wikimedia.org/wiki/File:Spectrum4websiteEval.png. ———. English: Colorful Spectrum simulationEspañol: Espectro de Colores de La Luz visibleEsperanto: Koloroj Videblaj中文（简体）‎: 软件模拟的可见光谱。中文（繁體）‎: 軟件模擬的可見光譜。, August 27, 2008. Digitally created by Deborah S Krolls, December 13, 2004. http://commons.wikimedia.org/wiki/File:Spectrum4websiteEval.png. me. Helium Is a Chemical Element with the Symbol He and Atomic Number 2., [object HTMLTableCellElement]. image:Helium.gif. http://commons.wikimedia.org/wiki/File:Helium.svg. ———. Hydrogen Is a Chemical Element with the Atomic Number 1 and the Symbol H., [object HTMLTableCellElement]. Image:Fluorine.gif. http://commons.wikimedia.org/wiki/File:Hydrogen_(element).svg. OrangeDog, A_hidrogen_szinkepei jpg: User:Szdoriderivative work: Electron Shell Transitions of Hydrogen., 15:51 (UTC). A_hidrogen_szinkepei.jpg. http://commons.wikimedia.org/wiki/File:Hydrogen_transitions.svg. Unknown. Ernest Rutherford, ca (original photograph 1910. This file is lacking source information. Please edit this file's description and provide a source. http://commons.wikimedia.org/wiki/File:Ernest_Rutherford.jpg.
What Is A Semiconductor?
04:46

What Is A Semiconductor?

Semiconductors are in everything from your cell phone to rockets. But what exactly are they, and what makes them so special? Find out from Jamie, a Ph.D. student in Electrical Engineering and Computer Science at MIT. More information on semiconductors from MIT: https://www.pinterest.com/mitk12videos/what-is-a-semiconductor/ Go behind-the-scenes of this episode: http://mitk12videos.tumblr.com/post/118782530323/what-is-a-semiconductor ---------- Find us online! Facebook: http://www.facebook.com/MITK12 Twitter: http://www.twitter.com/MITK12Videos http://k12videos.mit.edu ---------- made with love at MIT Creative Commons: CC BY-NC-SA, MIT http://k12videos.mit.edu/terms-and-conditions Hosted & Written by: Jamie Teherani (http://teherani.weebly.com/) Additional Scripting by: Elizabeth Choe & George Zaidan Executive Producer & Doodles: Elizabeth Choe Director: George Zaidan Camera: Adam Morrell Editor & Motion Graphics: Per Hoel Theme song: Anthony Thomas & Neil Aggarwal Music: "Brittle Rille" Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 3.0 http://creativecommons.org/licenses/by/3.0/ Special thanks to the following for their sponsorship: MIT Microsystems Technology Laboratories (http://www-mtl.mit.edu/) National Science Foundation (http://www.nsf.gov) Center for Energy Efficient Electronics Science (http://www.e3s-center.org)
mitosis 3d animation |Phases of mitosis|cell division

mitosis 3d animation |Phases of mitosis|cell division

Phases of mitosis:This animation demonstrates the stages of mitosis in an animal cell. Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word "mitosis" means "threads," and it refers to the threadlike appearance of chromosomes as the cell prepares to divide. Early microscopists were the first to observe these structures, and they also noted the appearance of a specialized network of microtubules during mitosis. These tubules, collectively known as the spindle, extend from structures called centrosomes — with one centrosome located at each of the opposite ends, or poles, of a cell. As mitosis progresses, the microtubules attach to the chromosomes, which have already duplicated their DNA and aligned across the center of the cell. The spindle tubules then shorten and move toward the poles of the cell. As they move, they pull the one copy of each chromosome with them to opposite poles of the cell. This process ensures that each daughter cell will contain one exact copy of the parent cell DNA. Interphase: Cells may appear inactive during this stage, but they are quite the opposite. This is the longest period of the complete cell cycle during which DNA replicates, the centrioles divide, and proteins are actively produced. For a complete description of the events during Interphase, read about the Cell Cycle. Prophase: During this first mitotic stage, the nucleolus fades and chromatin (replicated DNA and associated proteins) condenses into chromosomes. Each replicated chromosome comprises two chromatids, both with the same genetic information. Microtubules of the cytoskeleton, responsible for cell shape, motility and attachment to other cells during interphase, disassemble. And the building blocks of these microtubules are used to grow the mitotic spindle from the region of the centrosomes. Prometaphase: In this stage the nuclear envelope breaks down so there is no longer a recognizable nucleus. Some mitotic spindle fibers elongate from the centrosomes and attach to kinetochores, protein bundles at the centromere region on the chromosomes where sister chromatids are joined. Other spindle fibers elongate but instead of attaching to chromosomes, overlap each other at the cell center. Metaphase: Tension applied by the spindle fibers aligns all chromosomes in one plane at the center of the cell. Anaphase: Spindle fibers shorten, the kinetochores separate, and the chromatids (daughter chromosomes) are pulled apart and begin moving to the cell poles. Telophase: The daughter chromosomes arrive at the poles and the spindle fibers that have pulled them apart disappear. Cytokinesis: The spindle fibers not attached to chromosomes begin breaking down until only that portion of overlap is left. It is in this region that a contractile ring cleaves the cell into two daughter cells. Microtubules then reorganize into a new cytoskeleton for the return to interphase.
Comparing mitosis and meiosis | Cells | MCAT | Khan Academy
05:50

Comparing mitosis and meiosis | Cells | MCAT | Khan Academy

Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/science/ap-biology/heredity/meiosis-and-genetic-diversity/v/comparing-mitosis-and-meiosis Comparison of the processes of mitosis and meiosis. Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/phases-of-meiosis-i?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/cellular-division/v/mitosis?utm_source=YT&utm_medium=Desc&utm_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Types Asexual Reproduction

Types Asexual Reproduction

The Periodic Table: Crash Course Chemistry #4
11:22

The Periodic Table: Crash Course Chemistry #4

Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise, information-dense catalog of all of the different sorts of atoms in the universe, and it has a wealth of information to tell us if we can learn to read it. Watch this video in Spanish on our Crash Course en Español channel! https://youtu.be/AmOl0v_3jsc Pssst... we made flashcards to help you review the content in this episode! Find them on the free Crash Course App! Download it here for Apple Devices: https://apple.co/3d4eyZo Download it here for Android Devices: https://bit.ly/2SrDulJ Table of Contents Dmitri Mendeleev - 0:45 Mendeleev's Organization of the Periodic Table - 2:31 Relationships in the Periodic Table - 5:03 Why Mendeleev Stood Out from his Colleagues - 7:09 How the Periodic Table Could be Improved - 8:28 More info about the cylindrical periodic table of elements: http://www.av8n.com/physics/periodic-table.htm Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Instagram - https://www.instagram.com/thecrashcourse/ CC Kids: http://www.youtube.com/crashcoursekids
What the HECK is Energy?
07:59

What the HECK is Energy?

Just about every scientific discipline talks about energy. There are many different types: potential, kinetic, thermal, chemical, and even nuclear. It's behavior has consequences that affect the very nature of matter and space-time itself, so what is it exactly? ________________________________ VIDEO ANNOTATIONS/CARDS What the HECK is Mass? https://youtu.be/XkPudRiWspc You Do NOT "Charge" A Battery! http://youtu.be/cPQbkTkGsnI Is Math the Language of the Universe? https://youtu.be/inPcQeYWVT8 The Ultimate Guide to Relativity: https://youtu.be/FdWMM6aXpYE ________________________________ RELATED YOUTUBE VIDEOS PBS Space Time on Energy: https://youtu.be/PUn2izowBkw ________________________________ SUPPORT THE SCIENCE ASYLUM Patreon: http://www.patreon.com/ScienceAsylum Advanced Theoretical Physics (eBook): https://gumroad.com/l/ubSc Merchandise: http://shop.spreadshirt.com/scienceasylum/ ________________________________ HUGE THANK YOU TO THESE PATRONS ** Einsteinium Level Crazy ** Daniel Bahr, Ilya Yashin, Drake Dragon (TMDrake), Morgan Williams, Rick Finn ** Plutonium Level Crazy ** Anamnesia, Kevin MacLean ** Platinum Level Crazy ** Timothy Blahout, Mikayla Eckel Cifrese, David Bronakowski, Robert J Zapolis, Evgeny Ivanov ________________________________ OTHER SOURCES https://www.merriam-webster.com/dictionary/energy https://www.merriam-webster.com/dictionary/work ________________________________ LINKS TO COMMENTS What is Energy: https://www.youtube.com/watch?v=XkPudRiWspc&lc=UgyMqoY5DhrNNAoA78R4AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=Ugwl8oTMbd_xvKu2cdV4AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=Ugx5kpkCEJmMocbfKT14AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=UgwnIR66xlGqBjvr3_F4AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=Ugy9s3vL2ROpEhpNM1p4AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=UgyHiStaB1pqzFbT1MJ4AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=Ugy5dqPq-VXINhtuv714AaABAg https://www.youtube.com/watch?v=XkPudRiWspc&lc=UgyPAv7BiW7FPSBocld4AaABAg Featured Comment: https://www.youtube.com/watch?v=XkPudRiWspc&lc=UgydS3e1skUQ8r08dKd4AaABAg ________________________________ IMAGE CREDITS Nuclear Test: https://youtu.be/XnrLY-phipw
What is REDSHIFT?
03:23

What is REDSHIFT?

🤝 Patreon: https://www.patreon.com/astronomic ———————————————————————————— ➕ Subscribe: https://www.youtube.com/Astronomic 👍 Enjoyed the Video? Leave a Like! 🔔 Turn on Notifications, for Video Alerts! ———————————————————————————— 🐦 Twitter: https://www.twitter.com/astr0nomic 📖 Facebook: https://www.facebook.com/astronomic 📸 Instagram: https://www.instagram.com/astr0nomic 📼 More: https://www.curious.com/astronomic 💵 PayPal: astronomicmedia@gmail.com ———————————————————————————— 🍻 Tovi Sonnenberg ($5) 🍻 Christine Pines ($2) 🍻 Christopher Beattie ($1) 🍻 Kalistence ($1) ———————————————————————————— 📱 Icons: FreePik (https://www.freepik.com) 🔊 Bensound - Slow Motion 📝 Licensed under Creative Commons Attribution 3.0 🚀 Licensed under Astronomic videos ©
Cosmic Microwave Background Explained
07:10

Cosmic Microwave Background Explained

Want to ask some sort of crazy question about Space?: Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Support us on Patreon! http://www.patreon.com/pbsspacetime Help translate our videos! http://www.youtube.com/timedtext_cs_panel?tab=2&c=UC7_gcs09iThXybpVgjHZ_7g HAS SPACE ALWAYS BEEN BLACK? As long as we've been around, YES. But the universe gets much more exciting, AND much BRIGHTER, as we start winding our clocks back to the early days of the universe. Near the beginning of the universe, when space was rapidly expanding, that dark night sky we know so well as actually…ORANGE! But why? Did the lights just go out, or did something more spectacular happen? Watch this episode of PBS Space Time and find out! Extra Credit: CMG Scissored Pair https://www.youtube.com/watch?v=S85Nticmi3Q ----------------------------------------­­­------------------------------- New SpaceTime episodes every Wednesday! Hosted by Gabe Perez-Giz Made by Kornhaber Brown (www.kornhaberbrown.com)
Inside The World's Largest Particle Accelerator
06:14

Inside The World's Largest Particle Accelerator

The Large Hadron Collider is a 27 kilometer atom smasher! How does it work and what can it tell us about the make-up of our universe? A Rare Look Inside The Doomsday Seed Vault Deep In The Arctic - http://bit.ly/2babUEI Sign Up For The Seeker Newsletter Here - http://bit.ly/1UO1PxI Read More: CERN Overview Animation http://cds.cern.ch/record/2020780 "This animation shows how the Large Hadron Collider (LHC) works." After The Higgs, LHC Rounds Up The Unusual Suspects In Particle Physics http://www.nbcnews.com/science/science-news/after-higgs-lhc-rounds-unusual-suspects-particle-physics-n306446 "Supersymmetry and dark matter, neutralinos, gravitinos and gluinos ... you can expect exotic topics like these to be spinning around as the Large Hadron Collider ramps up to smash subatomic particles again over the next couple of months." Excitement Grows As Large Hadron Collider Hints At New Particle https://www.theguardian.com/science/2016/mar/18/excitement-grows-over-large-hadron-colliders-possible-new-particle-lhc "When hundreds of physicists gathered this week in La Thuile, an old mining town in the heart of the Italian alps, one short and simple question hung in the cool, crisp air: is it real? The source of their fascination, and no little excitement, was light. Not the sunlight that made the snow glint on the mountains in the Aosta valley, but light inside the Large Hadron Collider (LHC) across the border near Geneva. The machine had detected more photons than expected as it smashed particles beneath the quiet Swiss countryside. The brief flashes of light might be the first glimpse of the next big discovery." ____________________ DNews is dedicated to satisfying your curiosity and to bringing you mind-bending stories & perspectives you won't find anywhere else! New videos daily. Watch More DNews on Seeker http://www.seeker.com/show/dnews/ Subscribe now! http://www.youtube.com/subscription_center?add_user=dnewschannel DNews on Twitter http://twitter.com/dnews Trace Dominguez on Twitter https://twitter.com/tracedominguez DNews on Facebook https://facebook.com/DiscoveryNews DNews on Google+ http://gplus.to/dnews Discovery News http://discoverynews.com Sign Up For The Seeker Newsletter Here: http://bit.ly/1UO1PxI
The Immune System Explained I – Bacteria Infection
07:49

The Immune System Explained I – Bacteria Infection

Every second of your life you are under attack. Bacteria, viruses, spores and more living stuff wants to enter your body and use its resources for itself. The immune system is a powerful army of cells that fights like a T-Rex on speed and sacrifices itself for your survival. Without it you would die in no time. This sounds simple but the reality is complex, beautiful and just awesome. An animation of the immune system. OUR CHANNELS ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ German Channel: https://kgs.link/youtubeDE Spanish Channel: https://kgs.link/youtubeES HOW CAN YOU SUPPORT US? ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ This is how we make our living and it would be a pleasure if you support us! Get Merch designed with ❤ from https://kgs.link/shop Join the Patreon Bird Army 🐧 https://kgs.link/patreon DISCUSSIONS & SOCIAL MEDIA ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Reddit: https://kgs.link/reddit Instagram: https://kgs.link/instagram Twitter: https://kgs.link/twitter Facebook: https://kgs.link/facebook Discord: https://kgs.link/discord Newsletter: https://kgs.link/newsletter OUR VOICE ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ The Kurzgesagt voice is from Steve Taylor: https://kgs.link/youtube-voice OUR MUSIC ♬♪ ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ 700+ minutes of Kurzgesagt Soundtracks by Epic Mountain: Spotify: https://kgs.link/music-spotify Soundcloud: https://kgs.link/music-soundcloud Bandcamp: https://kgs.link/music-bandcamp Youtube: https://kgs.link/music-youtube Facebook: https://kgs.link/music-facebook The Soundtrack of this video: http://thomasveith.bandcamp.com/track/the-immune-system Videos, explaining things. Like evolution, time, space, global energy or our existence in this strange universe. We are a team of designers, journalists and musicians who want to make science look beautiful. Because it is beautiful. 🐦🐧🐤 PATREON BIRD ARMY 🐤🐧🐦 ▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀ Many Thanks to our wonderful Patreons from http://kgs.link/patreon who support us every month and made this video possible: Justin Degenaars jordan gardner Derek Loa Jeroen Koerts Carlos Campuzano Benoît Graham Scott Zell Tanya Smirnova Giovanna Cardoso Patrick Eyrich Alex Kaplan Chris Dudley Deanie Adams Caroline Andrewes Dean Herbert Rory Bennett Adam Primaeros Rasmus Lind Daniel O.C.L. Dylan Hoffer Maxl Heitsch Eliud Vasquez Neve Laughery Ghitea Andrei Paul Alexander Law McCormack Heavens Eduardo Barbosa Sara Shah Dario Pagnia Chris Doughty Evan Low Stephen Morse Bünyamin Tetik Romano Casellini dante harper Justin T. Greeny Liu Siddharth Bajaj Valerie Brunet Jen Tim Peter Wagner Yousif Efe Melih Polat Gaëtan Maximilian Ritter Charles Kuang Balazs-Hegedus Jozsef Petr Pilař Finn Edwards Thomas Lee Daniel Fuchs Pascal B. Seona Tea Pol Lutgen Roman Zolotorevich Daniel Jonathan Velazquez Gore Jeff "Church" Churchill Randy Knapp Brandon Liu Peter Žnuderl Swarochisha Kandregula Javier de la Garza Jan Lukas Lehmann somersault18:24 Why you are still alive - The immune system explained Help us caption & translate this video! http://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2
Viral replication: lytic vs lysogenic | Cells | MCAT | Khan Academy
05:11

Viral replication: lytic vs lysogenic | Cells | MCAT | Khan Academy

Watch the next lesson: https://www.khanacademy.org/test-prep/mcat/cells/viruses/v/retroviruses?utm_source=YT&utm_medium=Desc&utm_campaign=mcat Missed the previous lesson? https://www.khanacademy.org/test-prep/mcat/cells/viruses/v/virus-structure-and-classification?utm_source=YT&utm_medium=Desc&utm_campaign=mcat MCAT on Khan Academy: Go ahead and practice some passage-based questions! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to Khan Academy’s MCAT channel: https://www.youtube.com/channel/UCDkK5wqSuwDlJ3_nl3rgdiQ?sub_confirmation=1 Subscribe to Khan Academy: https://www.youtube.com/subscription_center?add_user=khanacademy
Darwin and Natural Selection: Crash Course History of Science #22
13:10

Darwin and Natural Selection: Crash Course History of Science #22

"Survival of the Fittest" sounds like a great WWE show but today we're talking about that phrase as it relates to Charles Darwin and Alfred Wallace. Darwin and Wallace are at the heart of understanding evolution and natural selection. Today, Hank talks about their wonderful (if not seasick inducing) trips around the world. *** Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever: Mark Brouwer, Erika & Alexa Saur Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Eric Kitchen, Ian Dundore, Chris Peters -- Want to find Crash Course elsewhere on the internet? Facebook - http://www.facebook.com/YouTubeCrashCourse Twitter - http://www.twitter.com/TheCrashCourse Tumblr - http://thecrashcourse.tumblr.com Support Crash Course on Patreon: http://patreon.com/crashcourse CC Kids: http://www.youtube.com/
Wallace, Darwin's Forgotten Frenemy
04:45

Wallace, Darwin's Forgotten Frenemy

Everyone knows the name Charles Darwin, but his lesser known frenemy, Alfred Russel Wallace, was developing a lot of the same ideas around the same time. For 10% off Squarespace: http://squarespace.com/scishow Hosted by: Hank Green ---------- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ---------- Dooblydoo thanks go to the following Patreon supporters—we couldn't make SciShow without them! Shoutout to Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Tim Curwick, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ---------- 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://www.britannica.com/biography/Alfred-Russel-Wallace http://www.npr.org/templates/story/story.php?storyId=92059646 http://www.bbc.com/news/uk-wales-21549079 http://evolution.berkeley.edu/evolibrary/article/history_16 https://www.wired.com/2011/07/0701darwin-wallace-linnaean-society-london/ Images: https://commons.wikimedia.org/wiki/File:1878_Darwin_photo_by_Leonard_from_Woodall_1884_-_cropped_grayed_partially_cleaned.jpg https://commons.wikimedia.org/wiki/File:Charles_Darwin_by_G._Richmond.png https://commons.wikimedia.org/wiki/File:Darwin%27s_finches_by_Gould.jpg https://commons.wikimedia.org/wiki/File:Alfred-Russel-Wallace-c1895.jpg https://commons.wikimedia.org/wiki/File:Voyage_of_the_Beagle-en.svg https://commons.wikimedia.org/wiki/File:Voyage_of_the_Beagle-en.svg https://commons.wikimedia.org/wiki/File:Wallace_map_archipelago.jpg https://commons.wikimedia.org/wiki/File:PSM_V57_D097_Hms_beagle_in_the_straits_of_magellan.png https://commons.wikimedia.org/wiki/File:Wallacea.png https://commons.wikimedia.org/wiki/File:Bronze_statue_of_Alfred_Russel_Wallace.jpg

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Electron Configuration
10:17

Electron Configuration

005 - Electron Configuration In this video Paul Andersen explains how to write out the electron configuration for atoms on the periodic table. More importantly he shows you why electrons arrange themselves in shells, subshells and orbitals by using Coulomb's law and studying the first ionization energies of different atoms. ANSWERS: Cl - [Ne] 3s^2 3p^5 Ag - [Kr] 4d^10 5s^1 - Did you get [Kr] 5s^2 4d^9? There are a few exceptions to this law. Most of them are found in the f-block metals and they are not of much chemical significance. Music Attribution Title: String Theory Artist: Herman Jolly http://sunsetvalley.bandcamp.com/track/string-theory All of the images are licensed under creative commons and public domain licensing: File:Electron Configuration Diagrams from H to Ne.svg, n.d. http://commons.wikimedia.org/wiki/File:Electron_configuration_diagrams_from_H_to_Ne.svg. "File:Electron Orbitals.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. https://en.wikipedia.org/wiki/File:Electron_orbitals.svg. "File:Electron Shell 001 Hydrogen - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. http://en.wikipedia.org/wiki/File:Electron_shell_001_Hydrogen_-_no_label.svg. "File:Electron Shell 002 Helium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. http://en.wikipedia.org/wiki/File:Electron_shell_002_Helium_-_no_label.svg. "File:Electron Shell 003 Lithium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. http://en.wikipedia.org/wiki/File:Electron_shell_003_Lithium_-_no_label.svg. "File:Electron Shell 004 Beryllium - No Label.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. http://en.wikipedia.org/wiki/File:Electron_shell_004_Beryllium_-_no_label.svg. "File:Empirical Atomic Radius Trends.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. http://en.wikipedia.org/wiki/File:Empirical_atomic_radius_trends.png. "File:First Ionization Energy.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. http://en.wikipedia.org/wiki/File:First_Ionization_Energy.svg. "File:Klechkovski Rule.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. http://en.wikipedia.org/wiki/File:Klechkovski_rule.svg. "File:Periodic Table 2.svg." Wikipedia, the Free Encyclopedia. Accessed July 31, 2013. https://en.wikipedia.org/wiki/File:Periodic_Table_2.svg. "File:Periodic Trends.svg." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. http://en.wikipedia.org/wiki/File:Periodic_trends.svg. "File:Periodic Variation of Pauling Electronegativities.png." Wikipedia, the Free Encyclopedia. Accessed August 1, 2013. http://en.wikipedia.org/wiki/File:Periodic_variation_of_Pauling_electronegativities.png. RJHall. Ionization Energies of Neutral Elements, in Units of eV., October 10, 2010. File:Ionization energies.png. http://commons.wikimedia.org/wiki/File:Ionization_energies.svg.

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