2:15 "So, we could try..." -Dr. Phil Dooley, famous last words.
@the1exnay
10 жыл бұрын
gamma radiation like that is not that dangerous. you probably receive more gamma radiation in a day (if not less but im not sure on the numbers) than he gave himself right there
@Armaros
10 жыл бұрын
Firaro Yes, believe it or not, I did actually watch the video and am well aware of the safety of the act. It was a joke that I'm happy to report 11 people more perceptive than you caught on to.
@MaidaA22589
8 жыл бұрын
'I must be thicker than lead' xD 👌👌
@tristanmiller5215
8 жыл бұрын
+Maida A As he holds the gamma radiation to his brain :P
@MaidaA22589
8 жыл бұрын
Tristan Miller Some people are just unique like that xD
@drednaught608
7 жыл бұрын
I like this guy.
@theoristnumber1173
5 жыл бұрын
Maida A, no it’s THICC not thick
@Paprikaa81
5 жыл бұрын
Thiccer
@veritasium
12 жыл бұрын
It also depends on the activity of the source - the gamma may not have been emitting as many per second as the beta source.
@hannahl3456
7 жыл бұрын
Derek looks so different ;)
@borhanzadeh1699
7 жыл бұрын
This may be the most underrated comment of this year!
@user-tr2hc2xx3b
3 жыл бұрын
He just put gamma radiation source near his head...
@darryl0harris
2 жыл бұрын
@@borhanzadeh1699 come on man its good but its not that good. The comment sections on KZitem have some real cherries. I wouldn't even put this in the top 100 (of the ones I've read)
@a380rockerfan
11 жыл бұрын
"But I think I must be thicker than lead" Absolute classic, hats off to him!
@StormsparkPegasus
2 жыл бұрын
Actually, the reason the human body can block gamma, is because it's mostly water. Water is good at blocking all types of radiation (it takes a lot to block gamma, but still).
@RepairRenovateRenew
Жыл бұрын
incredibly insightful, thank you.
@honaku95
10 жыл бұрын
2:15 how did he change left hand to right hand?
@IshaanKumarmetalmilitant
10 жыл бұрын
By this bit of sorcery known as video editing.
@mrphoenix5325
6 жыл бұрын
Ahhh, the mysteries of radiation…
@GioGziro95
6 жыл бұрын
✨ *𝕸𝖆𝖌𝖎𝖈* ✨
@lcs8411
3 жыл бұрын
You have really good observation skills :)
@KarbineKyle
8 жыл бұрын
Cool! If I had to guess, I'd say the 3 isotopes he is demonstrating with is a polonium-210 or a plutonium-239 alpha source, a strontium-90 beta source, and a cobalt-60 beta/gamma source. Each are probably less than 1 microcurie. That's an extremely tiny amount, but it's great for a simple demonstration like this.
@VejmR
5 жыл бұрын
Did something that emit alpha radiation always together with the 2 Beta due to the charge?
@StormsparkPegasus
2 жыл бұрын
@@VejmR Nope, but it depends on the isotope. Po-210 decays exclusively via alpha to lead-206 (which is stable) so there is nothing but alpha produced. Other elements that decay via alpha, have daughter nucleides that decay via beta or gamma. So except in very specific circumstances (like Po-210) you aren't going to find alpha by itself, because most of the time it will decay into something else that decays via beta or gamma. If you want to know for sure exactly what radiation will be produced, you need to look at the entire decay chain for the isotope in question. As I said, Po-210 is very simple, directly to lead-206 which is stable and that's the end of it. Americium-241 (though it also decays via alpha) is much more complex, going through about 6 steps before it gets to something stable.
@JAKOB1977
6 жыл бұрын
More videos with this dude.. very easy and understandable approach,.
@jakesweet1000
11 жыл бұрын
holding up radioactive atoms to you head, really smart
@withroaj
11 жыл бұрын
Alpha is simply the name for the Helium nucleus emitted from an unstable isotope seeking a more stable configuration. It is one of the primary methods of decay for heavier nuclei (if you trace the decay chains of heavy, unstable isotopes; most of the time you'll wind up with stable lead -- weird). Alpha decay happens when a nucleus is simply too massive, leaving it in an unstable condition in which it needs to shed mass to reach a stable configuration. The particle most often emitted is He.
@markcavendish7148
7 жыл бұрын
Very nice. PLease continue making such videos
@veritasium
12 жыл бұрын
@RoGdl12345 2p + 2n makes a particularly stable combination - the He-4 nucleus - which can escape from unstable bigger nuclei.
@the1exnay
10 жыл бұрын
i love the part where he puts the gamma radiation to his head basically mocking anyone who is afraid of xrays and stuff like that. it is worth mentioning though that gamma radiation is all types of electromagnetic waves including visible light. microwaves. infrared. but really what people worry about is ionizing radiation which is basically ultraviolet, microwaves and along that direction (and of course alpha and beta do damaging stuff). what these do is they have enough energy to knock an electron off an atom which really messes with the chemistry in your cells. which can in some cases cause cancer
@the1exnay
10 жыл бұрын
wait sorry revision X-rays and gamma rays are both just little areas on the electromagnetic spectrum. both are ionizing though
@RedsBoneStuff
9 жыл бұрын
Cancer is basically a mutation of cells that is bad for the organism, and it could happen at any time, am I right?
@the1exnay
9 жыл бұрын
RedsBoneStuff yeah, we are constantly being bombarded by ionizing radiation. our DNA is constantly having errors in its replication (most of which get repaired). you can get cancer at anytime, however some things modify the probabilities
@RedsBoneStuff
9 жыл бұрын
Firaro Mhm, just the way I thought it was.
@GioGziro95
6 жыл бұрын
Microwaves aren't ionizing; their energies are much lower than the energies of the visible light and infrared.
@andobechayda1198
5 жыл бұрын
Very helpful channel...
@firstlast9731
Жыл бұрын
This makes total sense now. Thanks
@Kuruharu77
12 жыл бұрын
@toast1144 ok, that makes much better sense now. For some reason I always thought electrons and photons were the same particle just one was in an electron cloud and the other was freely moving as light, respectively. Thanks for clearing that up!
@Majtaxa
3 ай бұрын
Mr. Mcgee dont make me angry, you wouldnt like it when I am angry
@Zandonus
11 жыл бұрын
That does add a bit more sense, thanks.
@projectdelta50
2 жыл бұрын
Thicker than led, but also mostly water, which is really good at blocking particles too
@EdEverhartT
11 жыл бұрын
Usually with thick wall of concrete or soil or water or mixed components of the previous matters. We need a large mass of matter to block gamma radiation, of course we can use lead (lead is better because of it's atom density), but it's hard to find lead in a large mass, so usually water, concrete, and soil are used because of practical reasons (cost wise and easy to get).
@ericbergmansvensk6234
11 жыл бұрын
from the convertion of an up-quark in a proton into a down-quark. This gives off an anti-neutrino and an electron
@withroaj
11 жыл бұрын
Protons and neutrons are emitted in some radioactive decay (though most often protons and neutrons are emitted as a result of particle ejection, caused by a nucleus absorbing a free neutron -- the neutron, of course, would be emitted by something like fission or Deuterium-Tritium fusion, which is awesome).
@Dwarfvader172
10 жыл бұрын
these types of experiments are probably what make physicists so smart XD
@smitasher6862
8 жыл бұрын
Nice explanation
@CullTheLivingFlower
11 жыл бұрын
Blocking that gamma radiation with your head like a boss.
@kalsuit17
11 жыл бұрын
..and now i remembered how horrible it would be a part of the cleaning team during the Chernobyl disaster lead shielding is just like an umbrella under a raining shrapnel that it would soon renders it useless due to an astronomical amount of radiation emitted by the melting core of the power plant..
@UtkarshShukla712
7 жыл бұрын
I wish our teachers could teach like that..
@DaffyDaffyDaffy33322
12 жыл бұрын
2:15 Every fiber of my being is saying dont do that...
@HappyDancerInPink
11 жыл бұрын
Thank you :)
@kadhemchaabene318
10 жыл бұрын
Nice move with your head, life would be more interesting if we tried everything new with our heads..
@tmpEngine
11 жыл бұрын
2:19 That's painfull to watch ! I can feel the pain
@jfusion10
11 жыл бұрын
this guy has balls, putting a gamma source pointing at his head.
@franklouuu
10 жыл бұрын
The thing is that for radiation to be really unhealthy you have to be in contact with it for long periods of time. Like the sunlight. And I also believe that with an X-ray test, you would get much more radiation that with that little thing close to your head for some seconds. And the other types of particles (alpha and beta) are much worse.
@lock_ray
11 жыл бұрын
I guess with a really damn thick wall of led XD
@chriswww
11 жыл бұрын
Because the time of exposure during his demonstration is so small the dose is almost negligible. The radioactive particles are contained in the fiberglass or whatever those slides are made of and cannot enter your body where they will stay for a long time and cause serious long term damage. It's definitely not good but it's not as dangerous as you would think.
@futuregadgetlab2036
10 жыл бұрын
I want to try that
@sidewaysfcs0718
11 жыл бұрын
if it would, that would be dangerous for whoever is standing there.
@Ebvardh
11 жыл бұрын
2:17 Meet the physicist, ladies and gentlemen.
@Jma0322
11 жыл бұрын
2:17 Nooooooooooooooooooooo don't do that!
@tomdaae79
11 жыл бұрын
If it were in the range of visible light, then it would indeed be blocked to the same degree as visible light is. (Paper is not 100% opaque) However, gamma radiation is in the absolute upper range of the electromagnetic spectrum and has a lot more energy and therefore "penetration power". Check the Wikipedia article on electromagnetic spectrum for more info.
@sidewaysfcs0718
11 жыл бұрын
every second, trillions and trillions of neutrinos pass through you along with other small ammounts of cosmic rays and they were still here.
@Ebvardh
11 жыл бұрын
Indeed.
@Tletna
11 жыл бұрын
You make a valid point. I just don't like over-generalizations (yes, even if I'm the one guilty of making them sometimes). People should realize that scientists make mistakes and often because they're the scientists they don't even realize it. That's why there is peer review. Scientists get stuck in their paradigms just like the rest of us. Even the scientific method has flaws. Scientists are just people that do science. They're not gods of knowledge of whom we can always assume are right.
@sisbrawny
9 жыл бұрын
Types of _Nuclear_ Radiation
@civotamuaz5781
7 жыл бұрын
stop it.
@agorist.boogaloo
7 жыл бұрын
civota mu az Stop what? These are the types of nuclear radiation (particles or waves that come out of an atomic nucleus). You shouldn't mix them with electromagnetic..
Exactly. These are different types of radiation, not just nuclear and not just electromagnetic.
@Ryrzard
11 жыл бұрын
2:17 It looks safe...
@TheUglydandy
11 жыл бұрын
NEED MOAR THICKNESS OF HIGH DENSITY MATERIALS! Lead, tungsten, the depleted uranium etc. Gold and platinum are also fine :).
@AnThOnYrox8
12 жыл бұрын
I've been in those rooms before at USYD :) UTS student here :P.
@109Rage
11 жыл бұрын
Electromagnetic Radiation has little to do with actual magnets. Electromagnetic Radiation is basically light. But when we refer to it in this context, we're talking about wavelengths that are invisible to the human eye, and aren't generally considered safe. I don't remember the full story, as to why it has "magnet" in its name, but remember that in this context, it refers to light, and not magnets.
@azmaintausif1222
Жыл бұрын
I got scared when he pulled radiation on himself
@sidewaysfcs0718
11 жыл бұрын
i know pet scanners only detect the radiation that results from the process, they give you an ingested source of positrons wich after annihilation gives off gammas, i was just being casual
@xilefx
11 жыл бұрын
this was very trivial..
@PeterWalkerHP16c
8 жыл бұрын
Tesla was working on X-ray stuff at the same time as Roentgen but didn't publish. Anyhoo, he stuck his head in the beam. It made him sleepy. He thought it could be a great sleep aid. Eventually, after continuing to pass them through his head and getting migraines, lesions etc he decided it was a bad idea and not to do it any more. Dr Phil continues his work ....
@timverma
11 жыл бұрын
Well yeah, but I didn't think beta+ decay was part of your confusion. Glad you read up on it :)
@kkpdk
12 жыл бұрын
Even if the sources had similar emissions/second, one would expect far fewer detections/s from the gamma - they penetrate really well, so most of the photons go through the detector without interacting with it?
@DelphianSociety
12 жыл бұрын
Very basic information but flawless for people who casually want to learn sth about radiation
@lylefaraday4691
11 жыл бұрын
Of course.
@harkirat08
7 жыл бұрын
OMG!!! He put the gamma radiation emitter to his head... things that people do for the love of physics!
@AClarke2007
5 жыл бұрын
I bet you could make a simple X-Ray plotting machine using Geiger Counters.
@dvl973
11 жыл бұрын
so what's the difference between beta and gamma - since we know from quantum mechanics that electrons are electromagnetic wave and particles both at the same time? Doesn't that make the beta and gamma pretty much the same? Or is gamma radiation a different electromagnetic force that is being created? If so then how it works?
@justinfuhri
8 жыл бұрын
Have you done a video on thorium
@toast1144
12 жыл бұрын
@Kuruharu77 no, they aren't the same. Beta radiation is electron that are being emitted from the nucleus of an atom, when a neutron decay into a proton, electron and a antineutrino. but Gamma radiation is light with very high frequency. an electron participate in gravitational, electromagnetic and weak interactions, but are not a force carrier. photons are the electromagnetic force carrier
@sidewaysfcs0718
11 жыл бұрын
helium nuclei and helium atoms are slightly different things my guess is it would probably destroy the baloon, since plasma usually does that.
@sidewaysfcs0718
11 жыл бұрын
maybe because it's a bit difficult to get a stable source of positrons ...like a pet scanner.
@Estudio322
11 жыл бұрын
so, how do you block gamma radiation?
@jonbar18
11 жыл бұрын
I cringed more at how the cameraman let him put the counter and the source in the wrong hands
@sidewaysfcs0718
11 жыл бұрын
happens to us too , there is even evidence that high-atmosphere lightning can cause emission of gamma rays, that can pass right through the earth , and therefore, right through your skull xD the act of passing doesn't actually cause harm, it's when the rays remain in your skull, that things start to go bad.
@ThePhoenix137GC
10 жыл бұрын
It's probably a dumb question but i like to so if alpha radiation gives of neutrons and protons and beta radiation gives of electrons is there a way to make new types of atoms or elements combining the two types of radiation? If you could "catch" the protons neutrons and electrons?
@TheIchigo1324
10 жыл бұрын
truthfuly no but in theory yes idk if they have even tried that but you may just want to search around zee interwebs too look what other people say.
@kezran4976
3 жыл бұрын
Is solar radiation just one of these or all three? What about cosmic radiation? Or are they totally unrelated?
@Falcrist
11 жыл бұрын
Actually, there are two different kinds of beta decay (I've had time to read up on it), but that really wasn't my confusion.
@rifz42
4 жыл бұрын
is the clicks from the counter actual particles hitting it?
@natesmartkid6493
3 жыл бұрын
yes
@BlueCosmology
11 жыл бұрын
Very thick lead is how it's usually done.
@Mikapoofs
11 жыл бұрын
This is stuff is radioactive, so lets put it beside my head. (but that's okay, it's probably not that much higher than background radiation anyway.)
@tennisgirl608
11 жыл бұрын
Wasn't Becquerel the one that the photosensitive paper and uranium crystals pertained to?
@dvdsct
11 жыл бұрын
If, as you said, the gamma radiation is in fact the electromagnetc radiation, why does led block it? I mean, if it was in the "form" of visible light, wouln't it be stopped by the paper as well as the alpha particles?
@Teppei9asone
11 жыл бұрын
Really thick pieces of lead.
@willdouglas9896
2 жыл бұрын
His accent is so strong 😂
@sidewaysfcs0718
11 жыл бұрын
no, photons mediate the EM force, meaning they are the particles that get exchanged between electrons when they interact. for example, in real life when 2 balls smash and repell, their momentums change . on a quantum scale, when 2 electrons come together, they exchange a photon, and that is what changes their paths and momentums , since photons carry energy . photons are also absorbed for a body to increases it's mass , or "gets accelerated", since that's what acceleration actually means.
@ebtisam1415
6 жыл бұрын
can you help me with what the Dr was saying in 0:30 there was......... and why he added strontium in 1:50. because this will help me in translating to another language. Thanks.
@natesmartkid6493
3 жыл бұрын
"there was worse in store, there are 3 types of radiation" that means that there was a bigger problem that there were multiple kinds of radiation, making it more confusing. im pretty sure that the strontium is the radioactive material that was being used
@zacorton8919
5 жыл бұрын
Oh my god how is he passing gamma radiations through his head!!!!!!
@TiagoTiagoT
12 жыл бұрын
Helium atoms? If you put that sample inside a balloon it would inflate and if it's big enough it will even float after enough time?
@chriswww
11 жыл бұрын
Welcome to Australia.
@a47041
11 жыл бұрын
very thick lead and concrete I'm pretty sure
@RobarthVideo
11 жыл бұрын
Water, water is really good for this. This is why lots of radiation shelters are under water.
@namajkatiufputkata
5 жыл бұрын
very scientific approach! lmfao!
@goodlookingyummy
12 жыл бұрын
I feel bad for the radiation.
@ericbergmansvensk6234
11 жыл бұрын
beta also releases an anti neutrino
@parkersyp
11 жыл бұрын
now I wonder, what is electrostatic radiation?
@Luvme4ever31459
10 жыл бұрын
I know he noted dirt and rocks as examples, but do just specific things emit radiation, or does everything, but just in varying amounts (from minuscule amounts to very large)?
@TAL1SMAN6
9 жыл бұрын
I'm pretty sure that everything releases small amounts of radiation. E.G: 1 Banana === 0.1 MicroSieverts/Per Hour. Or The floor of the basement of the Chernobyl hospital, 1456 MicroSieverts/Per Hour
@Zandonus
11 жыл бұрын
magnets, electromagnetism--- i've seen quite a few videos explaining those, but i'm just too thick to comprehend them...
@Micklemoose
10 жыл бұрын
We are all getting hit with radiation all the time, from the sun, from uranium in the ground and even potassium in our food. Such a low dosage of radiation isn't going to harm him at all.
@agorist.boogaloo
7 жыл бұрын
Yes. People are freaking out for no reason. It's kind of annoying.
@RedsBoneStuff
9 жыл бұрын
0:25 Volume derp
@devilbobgaming
4 жыл бұрын
Im here from the future to tell you that he got close to the microphone on his collar
@JacksonWelch
10 жыл бұрын
Within one releases neutrinos?
@Kuruharu77
12 жыл бұрын
So, aren't Beta and Gamma radiation actually the same since photons(electrons) "carry" electromagnetic force?
@ThannTheMan
12 жыл бұрын
Was it just me, or was the gamma radiation not being picked up as strongly by the geiger counter? If so, why?
@adomjonsen6131
11 жыл бұрын
Holy shit...
@DerekDeMuth
11 жыл бұрын
Does anyone who finds odds with the head-counter bit use a cell phone?
@Crazymoniker
10 жыл бұрын
Or Neutron Star material.
@router9717
2 жыл бұрын
Bruh this KZitemr knows too much that he found a way to age backwards
@genrelguner2
12 жыл бұрын
Differn't question. does this dude have a channel?
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