radioactivity explained

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  • Опубликовано: 30 июл 2024
  • This video covers what radioactivity is, and in particular what alpha, beta and gamma emission is. I also cover the notation used to represent radioactive emission.
    Check out www.physicshigh.com and follow me on facebook and twitter @physicshigh
    and consider supporting me on www.patreon.com/highschoolphysicsexplained

Комментарии • 84

  • @pranjaljain9102
    @pranjaljain9102 3 года назад +17

    Now this a spectacular way to teach what radioactivity is . The systematic logic made it so interesting and easy to understand . thank you

  • @bamfomet
    @bamfomet 3 года назад +45

    After watching this video: “you know I’m something of a nuclear scientist myself.”

  • @Hambxne
    @Hambxne 5 лет назад +5

    well done! i always look forward to your videos :)

  • @rayray3638
    @rayray3638 2 года назад +16

    Just starting a degree in Radiotherapy. I don't understand this topic at all but I came across your video and has really helped me understand some stuff now. Love for the help and explanation

  • @imbenhello
    @imbenhello 4 года назад +4

    Awesome video. Best I've seen so far 👏

  • @desirekilambo2698
    @desirekilambo2698 3 года назад

    You made it so simple. Thanks!

  • @jxyoutube
    @jxyoutube 2 года назад +2

    Great explanation! Radioactivity explained in simple way that anyone can understand it. Thanks!

  • @xR3Dx0
    @xR3Dx0 3 года назад +4

    Amazing 👏 sucks it took me till I was 30 to gain an understanding on a topic "taught" to me in highschool

    • @Ninthofnine1969
      @Ninthofnine1969 Месяц назад

      Yep I'm 55 and I've learnt more from utube than I ever did at school 🎉🎉🎉

  • @avirss4606
    @avirss4606 2 года назад +1

    Thanks bro you explanation is so simple

  • @StudyWindows
    @StudyWindows 5 лет назад +1

    Nicely explained

  • @ajitsinghjhala961
    @ajitsinghjhala961 2 года назад

    very well explained thank you

  • @ThePeterDislikeShow
    @ThePeterDislikeShow 28 дней назад

    What happens to the chemical bonds of something that is decaying? E.g., polonium and lead have very different crystal structures and valance electrons. Would it create strain in the crystal structure?

  • @ognjen297
    @ognjen297 2 года назад +1

    Thank you for the video. I don't understand one thing, let's assume that we had atom with mass number of 3 and atom number of 2, and If we know that in the beta decay mass number stays the same and only atom number changes, does that mean that the nuclei of the atom will never get to the stable state and we will have indefinite decay ? (I am pretty sure that I am missing something)

  • @engineermerasmus2810
    @engineermerasmus2810 3 года назад +1

    Easy to understand, well I alredy knew this, but I think anyone can understand it!

  • @edgarallenpoe2191
    @edgarallenpoe2191 Год назад +1

    You should do an audiobook on this topic... this is all really fascinating

  • @shikhasankhla6089
    @shikhasankhla6089 3 года назад

    Woah this was very helpful thank you so much for this video

  • @allolebarilliertaxi4304
    @allolebarilliertaxi4304 3 года назад +2

    Thank you very much, i surely won't be able to remember all but now i understand a little bit better what are radiations. I guess i'll come back to strenghen what i learn today.
    So i will be a little bit able to explain this to my children.

  • @MohammadAli-sg8bj
    @MohammadAli-sg8bj 3 года назад +4

    thanks for the detailed video, the beta Particle that deflected, in the magnetic filed(will it be Beta minus or meta plus?)

    • @Batwam0
      @Batwam0 6 месяцев назад

      He says at 21:30 that it’s “not a positron”

  • @yodustin00
    @yodustin00 5 лет назад

    I have a question. How come all models of an atoms nucleus for the exceptions if a few very light particles like alphas, deuterium, & protium show the nucleus as a jumble mess kinda like a plum pudding model applied to the nucleus. I highly doubt that to be the case. I think it also explains way a helium nucleus is the standard alpha particle. What does the tritium nucleus really look like in a 3D model at what opposing angles are these baryons at in that case and does it scale. Is this the key to isotope stability?

  • @Kingstanding23
    @Kingstanding23 2 года назад

    This video has been useful.

  • @bourne8636
    @bourne8636 Год назад +1

    Trying to create a manga power system that focuses on radioactive powers so I’m doing a TON of research.

  • @mj.chemacademy
    @mj.chemacademy 2 месяца назад

    Hello sir
    In the alpha decay of uranium 238 the newly formed element is also short by 2 electrons. Where do these electrons go in the process?
    Regards
    M Jafar

    • @kadaritrivikram5890
      @kadaritrivikram5890 Месяц назад

      It converts into alpha particle and as we know number of neutrons = no of protons so when U238 undergoes alpha decay and emits Helium 2 4 which has two electrons hope this helps

  • @Ebenmedicals
    @Ebenmedicals 6 месяцев назад

    Very useful
    Thank you

  • @finnstadel
    @finnstadel Год назад

    Random and spontaneous. Orbits are not random, but I guess they are pushed around by the vacuum fluctuations causing random event like radioactive decays. But where does this seemingly randomnes of the vacuum fluctuations really come from ? Is it comparable to brownian motion or the noise from electrons jittering around in a conductor ?

  • @atharvmahamuni9318
    @atharvmahamuni9318 4 года назад

    Concept clear 👍👍

  • @burma.alejandro
    @burma.alejandro 3 года назад

    Thank you

  • @robertmur7911
    @robertmur7911 Год назад

    Lit video 🙏

  • @melissaeight481
    @melissaeight481 2 года назад +1

    Thank you! My 7 year old asked about how the get electricity. Which led down a rabbit hole about nuclear energy.... radiation.... Chernobyl...

  • @melodynawila2446
    @melodynawila2446 2 года назад

    I have enjoyed

  • @rafaylifts
    @rafaylifts 4 года назад +2

    Why is lead stable and realeses almost no radiation when number of neutrons is much more than protons

    • @j1n2
      @j1n2 3 года назад +1

      That's really a good question. after watching this video I think of 2 possible options:
      1) the amount of protons and neutrons in new Pb atom is just enough for a strong force to keep it together.
      2) It may be actually unstable for the first time but then there is some type of a gamma decay after so that in the end Pb will become a low energy Pb and then it's point 1 again - strong force can keep it together.
      I wonder how close am I though ?

    • @stevee.oneder891
      @stevee.oneder891 3 года назад

      Because you’re not factoring in the electrons

  • @sinhoyeong5981
    @sinhoyeong5981 4 года назад

    Yes it is that

  • @mesothelioma5024
    @mesothelioma5024 2 года назад +1

    I don’t understand almost half of this but I love this kind of stuff

  • @v.prestorpnrcrtlcrt2096
    @v.prestorpnrcrtlcrt2096 4 месяца назад

    Shhhh,
    Man speaking.

  • @darlenerodriguez6720
    @darlenerodriguez6720 Год назад +1

    If you define the word nuclei before starting your explanation, you will have tons of more people understanding and watching the whole video.

  • @5688gamble
    @5688gamble 8 месяцев назад

    People fear radioactivity too much. You respect it, like anything else. I imagine that since radiation is everywhere, that our bodies probably even depend on it to some degree, generating radicals and ionizing stuff, so if we isolated them from radioisotopes completely, might cells actually do worse or even get quite sick or die? Too little could be bad, much as too much is!

    • @kadaritrivikram5890
      @kadaritrivikram5890 Месяц назад

      As far as I know humans emit radiation at a very tiny levels because radiation is also a type of energy and many of our day to day electrical appliances emit radiation at a minute level which doesnt effect our bodies. So what if we isolate our selves from radiation well life on earth evolved in the background of radiation without things woludnt go good for us.Hope this helps

  • @iswarmeher3437
    @iswarmeher3437 3 года назад

    In 16:13 I guess you're talking about neutron not proton

  • @richardprichard7917
    @richardprichard7917 4 года назад +2

    does radiation explain why my left ear is hearing more than my right?

  • @pezcore2142
    @pezcore2142 4 года назад +11

    "what is radioactivity?"
    *raises hand*
    a song by kraftwerk, duh! ;)

  • @billybobhouse9559
    @billybobhouse9559 2 года назад

    Great video. I don't understand why the radiation is dangerous though? Don't we already have protons and neutrons in our bodies already? Why do these particles cause harm? Thanks.

    • @uramijajlovic5444
      @uramijajlovic5444 2 года назад +1

      Because the radiation can penatrate deep into our tissue, and cause harm to the very fragile DNA.material and lead to very bad mutations. It can cause, and as. we know of nowx it does cause cancerand overall is just very destabilizing for our body's natural way of functioning.

    • @billybobhouse9559
      @billybobhouse9559 2 года назад +1

      @@uramijajlovic5444 thanks for the reply. Makes sense.

    • @uramijajlovic5444
      @uramijajlovic5444 2 года назад

      @@billybobhouse9559 Welcome! 😁 There's great research on the internet so you can search that up if it interests you.

  • @phantom8845
    @phantom8845 2 года назад

    Cool but isnt it dangerous to hold uranium in hands if its that radioactive?

    • @kadaritrivikram5890
      @kadaritrivikram5890 Месяц назад

      Not for a very small time period also it is on a very small scale

  • @bobweiram6321
    @bobweiram6321 2 года назад

    High as in "High School" or high as in smokey smoke.

  • @boxfox2945
    @boxfox2945 5 месяцев назад

    Origins of evolution

  • @deftcoleman0552
    @deftcoleman0552 3 года назад

    It’s in the air for you and me

  • @loukat1837
    @loukat1837 4 года назад +3

    Are we just going to ignore the fact that he just handled a plastic container without safety goggles?

  • @santotiago80
    @santotiago80 3 года назад

    So if beta radiation is for smaller atoms,i why Caesium 137 ended up producing beta decay and lefted positrons as a residue in Dark serie? hahahahaha

  • @barbarapagan6292
    @barbarapagan6292 3 года назад +3

    i had to stop it made me sleepy

  • @Ninthofnine1969
    @Ninthofnine1969 Месяц назад

    🎉 good effort but too slow im falling asleep to your voice eh🎉

  • @flyboytheprince
    @flyboytheprince Год назад

    This is confusing I’m here because of the Marshall island 🏝️

  • @hiddeemmen
    @hiddeemmen 3 года назад

    6:22 you drew your plot the wrong way around

    • @hiddeemmen
      @hiddeemmen 3 года назад

      How am I the only person who noticed?

    • @captainshipman7377
      @captainshipman7377 3 года назад

      I don’t see what’s wrong with the plot. It’s a graph of protons vs neutrons. For larger atoms, there tends to be more neutrons, so the graph will curve upward (since he has neutrons on the y-axis or vertical axis)

  • @ganeshghule5625
    @ganeshghule5625 Год назад

    🕉🧘‍♂️First Task 🐮🙏Help me_ Stop FBS Salted covid 19 / korona Vaxcinations. 🙏🐮kalki🧘‍♂️🕉India🕉🙏जय माता वैष्णो राणी के Great Heart FBS Salted Vaxcination Against🚀🔥 World War 3 बाद विश्व मे शांती स्थापित करते विष्णुविधान (नया संविधान) के साथ भारत को विश्वगुरु बनाने वाले l 🙏🕉 अद्भुत सेनानी🌎🧜‍♂️कलिकाल कल्कि🐮🙏

  • @johnmoloney5296
    @johnmoloney5296 3 года назад

    I am more confused now than before I watched this, no help whatsoever

  • @rancosteel
    @rancosteel Год назад

    A good teacher always talks slowly and clearly. You speak too fast. Most people cannot absorb fast speech and learn.

  • @nicknick4156
    @nicknick4156 3 года назад

    Too complicated.

  • @ambercockrum3708
    @ambercockrum3708 3 года назад

    No way I’m watching a 25 minute video just to know what radioactive is, LIKE WHY CANT YOU MAKE A 1 MINUTE VIDEO AND SIMPLY SAY WHAT RADIOACTIVITY IS?!?