ASK.
ASK.
  • 21
  • 314 123
Element 43 shouldn't be radioactive
Radioactive elements are usually heavy, with high atomic weights. So why is the 43rd element in the periodic table radioactive? Find out here as we dive into the nuclear physics behind the periodic table.
Please subscribe so that we can afford Dropbox :)
Research Paper:
www.osti.gov/pages/servlets/purl/1368098
Image credits:
Black periodic table:
upload.wikimedia.org/wikipedia/commons/8/86/Periodic_table_blank.svg
Itub, CC BY-SA 3.0, creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons
commons.wikimedia.org/wiki/File:Periodic_table_blank.svg
Os Nrg level:
commons.wikimedia.org/wiki/File:Electron_shell_076_osmium.png
Fr Nrg level:
commons.wikimedia.org/wiki/File:Electron_shell_087_francium.png
Bonding diagram:
commons.wikimedia.org/wiki/File:Figure_02_01_10.jpg
Electrons and reactivity:
mammothmemory.net/chemistry/periodic-table/reactivity-of-halogens-and-alkali-metals/reactivity-of-halogens-and-alkali-metals.html
Energy Levels of Nucleons in a Smoothly-Varying Potential Well:
www.flickr.com/photos/mitopencourseware/3772864128
Empirical shell gap:
commons.wikimedia.org/wiki/File:Empirical_Shell_Gap.png
Shell model graphic:
commons.wikimedia.org/wiki/File:Shell_model.svg
Shells diagram:
commons.wikimedia.org/wiki/File:Shells.png
Chart of nuclides:
www.flickr.com/photos/nsclmedia/16433334771
Manhattan project Factory:
www.npca.org/articles/22-preserving-the-manhattan-project
Manhattan project test device:
lps.library.cmu.edu/ETHOS/article/id/22/
Mushroom cloud:
hti.osu.edu/history-lesson-plans/united-states-history/the-manhattan-project
Promethium isobar chart:
www.sciencedirect.com/topics/chemistry/nuclear-binding-energy
Переглядів: 241 425

Відео

Mark Donohue: From engineer to racing legend
Переглядів 1,7 тис.2 роки тому
Mark Donohue blurred the lines between racing driver and engineer, and used his knowledge to become one of the foremost American drivers of his time. Welcome to the highly anticipated third video in our series - Who’s this donny? Find the rest of the videos here (including Richard Feynman and Nikola Tesla): ua-cam.com/play/PLQN2WX03a2qp9OtOmm9X9PmUAsuG_sxTb.html Please subscribe so that we can ...
What makes glue sticky?
Переглядів 2,5 тис.2 роки тому
Why does glue stick? Why does it not stick to the inside of it's tube? Please subscribe so that we can afford Dropbox :)
How fast can we transfer data?
Переглядів 11 тис.3 роки тому
How quickly can we transfer data, and are the films realistic? Please subscribe so that we can afford Dropbox :) Image/video credits: USB 2 vs USB 3 upload.wikimedia.org/wikipedia/commons/8/82/USB_2.0_and_3.0_connectors.svg Milos.bmx, CC BY-SA 3.0 creativecommons.org/licenses/by-sa/3.0, via Wikimedia Commons commons.wikimedia.org/wiki/File:USB_2.0_and_3.0_connectors.svg USB 4 Credit: Satechi
Why does water stick to your glass when pouring?
Переглядів 6 тис.3 роки тому
Why does water fall down the side of your glass? This video explains why fluids dribble, why it’s better to pour at a steeper angle, and how some containers are designed to avoid this. Please subscribe so that we can afford Dropbox :) Bernoulli equation conditions: ocw.mit.edu/courses/mechanical-engineering/2-000-how-and-why-machines-work-spring-2002/study-materials/BernoulliEquation.pdf Altern...
Can we USE wasted heat?
Переглядів 5103 роки тому
We waste a LOT of energy as heat. Is there any way we can make use of it? In this video, we’ll discuss CHP, the laws of thermodynamics, perpetual motion machines, Maxwell’s demon and thermoelectric generators. Feel free to skip around to find the parts you’re interested in. Please subscribe so that we can afford Dropbox :) 0:00 - Intro (lightbulbs) 1:06 - Combined Heat and Power 1:52 - Entropy ...
Why do guitars have frets?
Переглядів 1,2 тис.3 роки тому
Why do guitars have frets when violins don't? What are frets for? And why do guitar frets get closer together as you go higher up? Stick around 'til the end for a surprise. Please subscribe so that we can afford Dropbox :) GIVEAWAY: free subscription to this channel if you share this video with 5 friends. Go on, you deserve it.
Do you really understand circuits?
Переглядів 32 тис.3 роки тому
A big misconception about electricity. How do electric circuits work? How is power delivered? How does alternating current transfer energy if it's changing direction all the time? There's more to it than you've been taught... Please subscribe so that we can afford Dropbox :) If you want to learn more: More on the Poynting vector- ua-cam.com/video/RWmgF7abFPE/v-deo.html An intuitive explanation ...
How computers work.
Переглядів 2,1 тис.3 роки тому
How do computers work on a physical level? How was the first computer programmed? How does a computer actually work? How do computers understand 1s and 0s? It's not as complicated as you think. Please subscribe so that we can afford Dropbox :) To find out more: If you dare - ua-cam.com/video/LnzuMJLZRdU/v-deo.html A calculator made using logic - ua-cam.com/video/qLyIULjAtxY/v-deo.html Image Cre...
Richard Feynman - Who's this donny?
Переглядів 3673 роки тому
Who was Richard Feynman? What did he have to do with a NASA rocket launch? Find out in the second instalment of our series about scientists who changed your life. The full series (including Nikola Tesla): ua-cam.com/play/PLQN2WX03a2qp9OtOmm9X9PmUAsuG_sxTb.html Please subscribe so that we can afford Dropbox :) Links to find out more: TED talk on Feynman by his friend Leonard Susskind, well worth...
How do computers create colour?
Переглядів 7053 роки тому
How do you create colours from 1s and 0s? Please subscribe so that we can afford Dropbox :) Image credits: CMYK colour upload.wikimedia.org/wikipedia/commons/4/4c/CMYK_color_swatches.svg User:Quark67, CC BY-SA 2.5 creativecommons.org/licenses/by-sa/2.5, via Wikimedia Commons Duty cycle cdn.sparkfun.com/assets/f/9/c/8/a/512e869bce395fbc64000002.JPG Sparkfun, CC BY-SA 4.0 Triangle wave upload.wik...
Why do cars need gears?
Переглядів 7 тис.3 роки тому
What’s the point of gears? Why do you need to keep changing them all the time? Why don't electric cars have gears? Or boats? Please subscribe so that we can afford Dropbox :) To find out more: Different types of gears science.howstuffworks.com/transport/engines-equipment/gear.htm Video showing a bike chain shifting between cogs (go to the 1:25 mark) ua-cam.com/video/7lKZcFoNZq8/v-deo.html
Nikola Tesla - Who's this donny?
Переглядів 3013 роки тому
Nikola Tesla - Who's this donny?
Why do different instruments have different sounds?
Переглядів 3453 роки тому
Why do different instruments have different sounds?
Infinite square roots?
Переглядів 1,1 тис.3 роки тому
Infinite square roots?
This ‘failed’ experiment changed Physics forever
Переглядів 1,7 тис.3 роки тому
This ‘failed’ experiment changed Physics forever
What makes things shiny?
Переглядів 1,1 тис.4 роки тому
What makes things shiny?
Why don't round lenses produce round images?
Переглядів 1 тис.4 роки тому
Why don't round lenses produce round images?

КОМЕНТАРІ

  • @sparklypri
    @sparklypri 5 днів тому

    beautifully explained

  • @RaoulLeDegueu
    @RaoulLeDegueu Місяць тому

    c'était dur à suivre avec les sous-titres, mais bravo les gars

  • @lelokong6898
    @lelokong6898 Місяць тому

    yeah, with a NVME external drive and with USB 4.0, we can probable hit 4000MB/s or higher now,

  • @jaydentan4336
    @jaydentan4336 Місяць тому

    Cool channel!

  • @An_Iron_God69420
    @An_Iron_God69420 2 місяці тому

    Oldest and youngest brother, affecting the mental state of the middle brother

  • @NikolajLepka
    @NikolajLepka 2 місяці тому

    I had no idea Technitium was number 43, but looking at the image of the periodic table and seeing that one radioactive outlier I knew exactly what this was gonna be about

  • @SSNewberry
    @SSNewberry 2 місяці тому

    There is also Promethium. It has an isotope 147 which decays down to Samarium, which is close to "magicity."

  • @sorroua1658
    @sorroua1658 2 місяці тому

    Yo why is steve from minecraft telling me about science I barely understand

  • @_Sparky144
    @_Sparky144 2 місяці тому

    So this could be a school project?

  • @Ellliptic
    @Ellliptic 2 місяці тому

    I INVOKE THE ANTHROPIC PRINCIPAL!!!!!!!!!!!!!! glue is sticky because we made it that way?

  • @itadoriduzumaki6276
    @itadoriduzumaki6276 2 місяці тому

    underated af

  • @danielclv97
    @danielclv97 2 місяці тому

    I'm not sure I understood the answear. Aren't the elements before it just fine with having neighbor elements on both sides more stable?

    • @gabrielhong2800
      @gabrielhong2800 2 місяці тому

      If I understood correctly, what they meant is that any isotope of Technetium that should be stable has another more stable neighbour with the same atomic mass which caused the technetium to decay, the reason why the other elements are fine having neighbour elements on both sides more stable is because they have other isotopes with no stable neighbour elements which allows them to have a non-radioactive isotope

  • @helenmachelen4200
    @helenmachelen4200 2 місяці тому

    And one that should be radioactive, isn't.

  • @govindkrishnalb
    @govindkrishnalb 2 місяці тому

    Don't change faces. It's annoying to watch so many people changing every 10 seconds.

  • @Astroponicist
    @Astroponicist 2 місяці тому

    perhaps the valley of stability only extends further under extreme conditions near or just beyond the event horizon? If time slows down for something near the event horizon perhaps that would allow novel conditions for the development of extremely large atoms?

  • @lewismassie
    @lewismassie 2 місяці тому

    This was phenomenally well made, and answered a question I've had for a long time

  • @jtmediaholdings7877
    @jtmediaholdings7877 2 місяці тому

    A very good video, but not fully well defined; simple antineutrino emission is also radioactive. Do you mean fissile?

  • @Rurumeto
    @Rurumeto 2 місяці тому

    I just watched a man change race

  • @znjnthrps
    @znjnthrps 2 місяці тому

    Great explanation. Very acesible.

  • @guillegilcriado6879
    @guillegilcriado6879 2 місяці тому

    Great explanation guys!!!

  • @elfeiin
    @elfeiin 3 місяці тому

    TWO PEOPLE INSTEAD OF ONE? Oh this is gonna be a lot easier to watch. Why is this channel not more popular? wait 3?? O: that's so many

  • @Lw1337
    @Lw1337 3 місяці тому

    3:57 I say yes

  • @ucngominh3354
    @ucngominh3354 3 місяці тому

    hi

  • @brandenblomberg3048
    @brandenblomberg3048 3 місяці тому

    such chads for putting all the cited sources at the end like that

  • @Chad_Thundercock
    @Chad_Thundercock 3 місяці тому

    That we still use the incorrect nomenclature for current, blows my mind. We're intentionally staying wrong. That's absurd.

  • @komolkovathana8568
    @komolkovathana8568 3 місяці тому

    02:39 wow! After all (says) 103 elements..there are 206 isotopes (159+53+50+4)=206.!! Averagely only just ; (206÷103)= 2 isotopes per each element..(? Not 3 or 4?)

    • @komolkovathana8568
      @komolkovathana8568 3 місяці тому

      Noted that only eg Helium (He) alone has "7" isotopes already.!!

  • @justabarrelbomb4472
    @justabarrelbomb4472 3 місяці тому

    1:39 BRO STARTED MEWING IN THE WOMB

  • @generalmarkmilleyisbenedic8895
    @generalmarkmilleyisbenedic8895 3 місяці тому

    Ew. Use 1 person that doesnt have melanin, this is silly

  • @girostade5477
    @girostade5477 3 місяці тому

    I didn't understand anything

  • @defiik
    @defiik 3 місяці тому

    Why not bro, WHY Technecium comes from the word TECH which means human made, the element should be even bro. loser

  • @anthonypurcell8287
    @anthonypurcell8287 3 місяці тому

    Hope this becomes the next big science channel

  • @interrospire
    @interrospire 3 місяці тому

    I got about 10% of that but seems really interesting. Thanks for the video!

  • @aleshandsome3705
    @aleshandsome3705 3 місяці тому

    As a materials scientist, I was following.... Until I wasn't, and got drowned by chemistry 😅

  • @itsrudetostare673
    @itsrudetostare673 3 місяці тому

    What an interesting change in perspective to why radioactive elements are unstable, great video!

  • @drakegrimm1287
    @drakegrimm1287 3 місяці тому

    Ok, could anyone please explain this to me? They took the number of protons (Z), the number of neutrons (N) and the atomic weight (A), and checked whether each of those is odd or even. Then they said that "each stable isotope falls into one of 4 categories", as in "each stable isotope is inside one of those 4, and unstable isotopes are outside these categories". But the other 4 combinations of "odds" and "evens" are impossible from the fact that A = Z + N Like you have radioactive Co-60 with even A, odd Z and odd N. And it is inside one of these 4 categories for which they claim to be for stable isotopes

  • @jordanleighton6893
    @jordanleighton6893 3 місяці тому

    ‘Joseph M’ I love that they went “no way we’re pronouncing it right, better to initial”

  • @shivjain
    @shivjain 3 місяці тому

    Even Hafnium is radioactive

  • @jonathancapps1103
    @jonathancapps1103 3 місяці тому

    The frequent changing of the host is so distracting I can barely pay attention to the presented informAtion. If the host was swapped maybe ⅓ or ¼ as often, I think it would work much better, and not chop up the flow.

  • @skyjumper4097
    @skyjumper4097 3 місяці тому

    i was always curious why Technetium was radioactive, and now i get a video about elemnt 43 in my recommendations. excited to watch :3

  • @castlebarron1788
    @castlebarron1788 3 місяці тому

    I didn’t understand a word that came out of their mouths, but the constant face changing was kinda cool?

  • @HeterosexuaI
    @HeterosexuaI 3 місяці тому

    why are there so many fuckin chapter marks on this video

  • @anothisflame8266
    @anothisflame8266 3 місяці тому

    .... I do not have the education level on this topic to understand more than the most basic ideas and concepts this video and paper discuss... and that is okay because you made it easy to understand the main points even for me. Good work.

  • @MmmHuggles
    @MmmHuggles 3 місяці тому

    You sound like a sexy lumberjack.

  • @Nxck2440
    @Nxck2440 3 місяці тому

    I didn't even realise this was a school project video it was so good lol, hope you guys won

  • @wofker4719
    @wofker4719 3 місяці тому

    is this a class project cause whats with the changing face lmfaoooo

  • @rays7805
    @rays7805 3 місяці тому

    Nope. Don't get it.

  • @interstellarsurfer
    @interstellarsurfer 3 місяці тому

    2:54 --- That's not a strategic omision, that's a lie by omission. The facts don't agree with your simple ideal, so you just decided to pretend you're right.

    • @HeterosexuaI
      @HeterosexuaI 3 місяці тому

      youre not that bright are you? the "strategic omission" is them cutting out the portion of the table that contains isotopes that they are not talking about. he was specifically referring to isotopes 97 and 99, so he removed the portion of the table that didnt contain those isotopes. it has nothing to do with facts or ideals, they were literally just not talking about the isotopes that they omitted. if im talking about divorce rates in the US and i pull up a table about divorce rates in north american countries, it wouldnt be lying by omission for me to remove the data regarding countries that i wasnt focusing on. talk less and pay more attention, you'll have less of a chance of looking stupid if you do.

  • @TherealKreven
    @TherealKreven 3 місяці тому

    I like ur funny words, magic man

  • @KSMvidcast
    @KSMvidcast 3 місяці тому

    Just came across this channel for the first time. Love the tag-team format! Y'all made a subject that would otherwise be boring super entertaining!

  • @canuckguy0313
    @canuckguy0313 3 місяці тому

    Technetium is my favourite element, has been since I was a kid, and this is another reason why!