When I was very young I was amazed by the cloud chamber at the Science Museum, London; but sadly, they don't have a cloud chamber there any more. I share your enthusiasm for this equipment!
Brownian Motion observed inside a smoke cell is also fun to see.
@asteroceras Did you see the YouTube vids (animations) on quantum weirdness? They are great....
One thing that struck me at the Science museum is how much more modern and functional the Newcomen Atmospheric Engine looks compared with the later and more ornate Boulton and Watt Engine. I love that place still. Life changing place and a national treasure!
How do I make one of these cloud chambers to see this experiment in person. I love to give it a try. I find it to be very interesting. Do you think it's possible for an other world to exist within our own world? Like living energy, or maybe like organisms that are pure energy or radiation.
just google or youtube search for DIY cloud chamber or whatever, you'll find more than enough, including "starbucks cloud chamber". just google it. :P
and well, we all are living energy. all energy in the universe is either in the form of radiation, or in the form of mass, and can at least partly be converted (radioactive decay, nuclear fission). if we were to turn all of an atom into energy (and not just fission it into two or three pieces), all hell would break loose. ^_^
@bionerd23 Ok thanks I guess. =/ And yea very true I agree we are all living energy just in different forms. You seem pretty intelligent. Do you think or believe that the universe is eternal? And that the universe recycles itself over & over again from the big crunch & big bang? I feel this is possible & true. Like expanding then compressing over & over again. Just like a circle with no beginning or end to it. O
students are taught that the rate of decay of a specific radioactive material is a constant.if a radioactive element was shield from the cosmic waves/background radiation it would cease to remain radioactive,There is no energy in matter other than that received from the environment.long-term observation of the decay rate of silicon-32 and radium-226 seemed to show a small seasonal variation. The decay rate was ever so slightly faster in winter than in summer, thus Einstein is Wrong. Period
thanks for the comment - i heard about that, too - radioactivity increasing / decreasing with e.g. solar activity. maybe radioactivity is something that is more or less likely to be induced in EVERY element, depending on properties. maybe there's NO stable element, as radioactivity depends on an outside factor, some kind of force carrier particle, that can induce it... it every nuclide. it's possible, but i havent seen valid proof for it yet. it's something to consider, though.
@bionerd23 Hello I'm glad to see your open minded response to such claims, well with new theories and experiments being published daily there are many observable experiments shown, just imagine if someone claimed radioactivity is variable dependent on sun-earth distance before you read that article-scientific journal(you'd probably think it was silly<3), I have many experiments using scientific method that can show you, and if im correct than textbooks re-written+"Over-unity" is a fact of nature
Sadly it's been proven beyond a reasonable doubt, the problem is standard models take a lot of frictional resistance and time to change, therefor it will be quite a while before mainstream academia has the courage and wisdom to reconstruct standard model theorem
The distilled essence can be found in large by great minds such as
Nikola Tesla's Dynamic theory of Gravity and Walter Russell's Electric Cosmology
We were in a Nuclear Plant a week ago with the school class. They have showed us this kind of cloud chamber and I was like: I NEED THAT IN MY ROOM!!!! So: Is it possible/hard/difficuld, to build a such chamber on my own?
THIS IS THE COOLEST THING EVER!!!! (And by the way, double alpha decays, to my understanding, are the Radon atoms that have already released an alpha particle, turned into Polonium, and released another one.)
well, you're breathing most of the stuff you can initially see all the time, as that's natural radiation that surrounds all of us. :)
as for the radon - the radioactive noble gas that was injected - a small dose will not do anything, either, but if you're chronically exposed (like e.g. the uranium miners used to be exposed to it), it is very likely to give you lung cancer. only smoking bears a higher risk of getting lung cancer.
@dsidewd Well if you were to breathe in iso-propanol enriched with radon gas, you'd collapse pretty sharpish with a lack of oxygen and then you'd die and then get cancer whilst you're dead. Admittedly this is pretty much the worst case scenario but it's definitely possible :) I love science.
Congratulations for this extraordinary recording of the double successive alpha emission by Rn!. This can be also seen in a homemade cloud chamber in a less exciting, but a convincing way.
between combustion, nuclear sciences, and electronics, people must be magical to make things like when the radon was added. lol jk, but seriously, its amazing to think we've come so far. i dont want to be technologically challenged when im old. "dad...dad...DAD I GOT IT! *teleporter/portal activates* its a teleporter, dad. its not exactly quantum multidimensionable gravitational destablization physics." -_-,,
well, yeah... but we're still just in the process of SEEING, GRASPING and UNDERSTANDING all the magic of science among us... it's not like we ever invented anything new that the universe did not yet create way before we did. :P
all we are doing is moving energy. but i think there are lots of things that were invented and didnt exist in nature. namely, vehicles. science is not magic because it relies on what has been observed and found mathematical correlations. magic would to use a something that relies on purely metaphysical observation. to just make from nothing from w/e, spell, curse, potion, ect. is magic. science is about exploitation of nature and provided materials, magic is more like overwriting the data.
well, i guess i used "magic" in a different way than you imply; by "magic", i meant "something that is really stunningly awesome". like, a "magic moment" can be when you discover the beauty of a uranium crystal under the microscope. sorry for the confusion.
sure, and e.g. a bus wouldnt exist in nature, but many forms of transport do exist. it's still just a form of "work" (power*way).
Do you know of anyone, who has watched through a ''near infra-ed or ultra-violet camera'', to see what's in that part of the spectrum, that's both invisible to our eyesight, & what's moving the alcohol vapor? It's identified as 'alpha & beta particles', o.k. but, it's going on all around us, with the cloud chamber creating an environment for observation of said 'particles' that are beyond our eyesight! Or, are they? Hmmmm.....
well, electromagnetic waves (ionizing radiation of "light", i.e. UV, x-ray, and gamma radiation) is not visible within the cloud chamber, sadly. only particle radiation is visible. hey, but there's quite a lot of particle radiation all around us - alpha decays from radon, protons coming in from space, all that. =)
wow! this is incredible! thank you so much for posting this. how does it work exactly? why can we see the atoms decaying? it's almost like you can see the universe as it is instead of how we interpret things!
don't listen to the morons who only take criticism of your voice personally. they just have no appreciation for the world around them.
well, to sum it up - there's a large temperature gradient within the camber. you know how cold air can take up much less humidity than hot air, right? that's why we speak of RELATIVE humidity and a total moisture per cubic meter. well, with a cold (-40 degrees C or less) bottom and a heated top of the chamber, the isopropanol vapors coming from near the top will make the air heavy so it sinks to the bottom, where it cools down rapidly.
(cont)... as it still contains all that alcohol, it will be "supersaturated" for the given temperature. within this environment, particle radiation will leave "trails" of ionization within the "fog", which is basically just condensed moisture on the created ions.
Thanks for posting this rare (for most of us) demonstration of particle physics. I can see why you like it. I also happen to think that you express yourself wonderfully and would ask you to lunch in a heartbeat!
i was told i dont use my lips much when talking, yeah. dunno though, i think i am using them normally, but i find it hard to compare. i am visible in e.g. watch?v=Mj0HDN82Pfo if you want to check it out.
i was never really good at talking, though, like i used to talk waaaay too fast in my youth, and without any pronounciation. i guess what you're hearing now are the remains of that impairment.
Clearly the best display I have ever seen. I have no doubt that your vid will be shown in classrooms throught the world. You should get an award for posing this!
why, thanks - but i think they should rather display real cloud chambers than just videos... a tiny cheap expansion cloud chamber with an exempt quantity of e.g. Am-241 would suffice. ;)
Tracks in the sky from airplanes? Oh no please Alex Jones and the rest of the doomsday/conspiracy theory crowd told me that its chemicals meant to dumb down the masses. I simply can't believe cold hard science in the face of feeling helpless in light of threatening NWO conspiracy theories.
@trinidadrrc First one alpha decay (Rn-220 -> Po-216 + alpha), then another (Po-216 -> Pb-212 + alpha), mostly within a second. For true double-alpha decay check out Be-8 (nothing is left). Half-life is just a wee bit short (sub-femtosecond) due to the extreme stability of two helium nuclei in comparison.
@2:01 In the most boring voice ever.. oh my god I love this, oh this is so insane. Please use your robot voice next time the excitement is overwhelming!
lol, sorry. i suck at expressing feelings. you'd hear and see me "bored" and with no facial expressions - but if you'd measure my blood pressure, heart frequency, and adrenaline levels, you'd know that i am *very* excited about this. ;)
...i'm just crap at expressing that in a typical human-compatible way of communication.
@bionerd23 I could here your excitement. Our media has trained, us to think that unless people are having the emotional equivalent of diarrhea they are not having feelings.
@tsquad23 Radio active substances are decaying at different rates. She used (I think) Radon 220, a radioactive element. It is classified as radioactive because it emits certain particles called Alpha Particles. These particles are positively charged, and are comprised of 2 protons and 2 neutrons bound together as helium: this is called alpha decay.
When enough of the radon has decayed, it reaches a point where only half of the substance remains. The time it takes is called half life.
@tsquad23 What you are seeing are the vapor trails of the emission of these alpha particles in a super-saturated cloud of isopropyl alcohol. She also mentions polonium-216 (I think), because this is the element that is created when radon-220 decays once (one alpha particle has an atomic mass of 4, so 220-4= 216.) She mentions that the reason these V shapes are created are because the polonium-216 has a very short half life (0.164 seconds I think she said)
I messed around in college with a cloud chamber, the double alpha decays that you are getting for Radon is amazing! I wish we had thought of it when we did this.
Were you cooling with liquid nitrogen? I was wondering when we were doing this what it would be like cooling with som He3
@186 They are just scientific terms you dont understand, maybe havent heard before. the english is fine. I go to college with many foreign professors such as persian, chinese, european, and indian, so i am used to accents.
The background at the beginning is mostly made of cosmic rays. The long straight thin tracks are from muons and the shorter thin tracks changing directions permanently are electrons. The electrons are lighter than muons and therefore they scatter a lot more.
@bionerd23 Cosmic rays have more energy and therefore can travel through the walls of the buildings. On the other hand the energy of beta decays is limited and the beta particles (electrons or positrons) do not go very far. So the radioactive background in the cloud chamber has to be very close to the chamber. Plus there is just a lot of cosmic rays falling down, typically 1 per cm2 per minute. (number from the Particle Data Group)
hmm, but radon is also accountable for about 50 Bq / m^3 (in my region; can be up to 10.000 Bq / m^3)... that'd be about 5-10 decays / second inside that cloud chamber area from radon alone (alpha radiation). then, there are also the daughters of that, which will be accountable for some of the beta radiation. hmm, not sure. definitely gotta look into that some more.
Unfortunate that stuff like this goes so unappreciated by so many people. I think this is absolutely awesome but I don't personally know a single person who would share my liking. :(..
What I think is one of the most amazing aspects is the particle speed. Reading the numbers for the speed of these particles is one thing, but to have it visually displayed like that is something completely different. Fascinating.
I have inserted an big neodymium magnet (about 500g) into my cloud chamber and so the bended tracks can be seen very good especially with low energy beta particles.
not precise calculations, no - the huge alpha particles (two protons and two neutrons) are much harder to distract than the little lightweight electrons (beta particles) - and the rest is dependent on the particle's energy; however, i dont know the precise conversion, e.g. "beta = for every 100 keV, you need 5kg "strength" of the magnet" or whatever. however, i did an experiment with a 27kg neodymium magnet vs. Sr-90: watch?v=adGVpHvEyUU
Holy crap that amazing how you can see the particles like that.. Its amazing how you can see radiation but with this now you know what is actually touching you
Holy Fxcking crap that is the most amazing thing I've ever seen!!! Thank you so much for posting that, I'm going to watch it like another 10 times or so now!!!
Is the previous "background" though still contaminated with 220Rn and its daughters from previous demonstrations, like 212Pb?
yeah, i'd say so - though due to the greater half lives (there was not much of an activity even with Rn-220 to start with!), i suppose you can ignore that and just call the decays in there "background radiation". :P
good thinking though! and i'm glad you love the video as much as i do! \o/
@AScannerClearly I believe that it DEFINITELY is still contaminated with the Rn daughters as that is wayyyy too high activity at the begining of the video to be normal background radiation in there. Compare to the same device at the SF Exploratorium here: watch?v=zxHvqWcTfMk or the device at Langsdorf here: watch?v=z5v5gVB-TJ0 Backgrounds are way lower, I suspect because this Rn gas demo is pretty rare and not done there(I've never seen it before!! and it's fucking zupercool!!!!).
first mentioned has quite a similar amount of beta decays; however, the fog is very "thick" and not as good as in the cloud chamber i saw, so i suppose that's part of the problem / why less trails are visible. also, you'll have to consider background radiation in general - which can be really different depending on your geographical region! between 0.05 and 0.5 uSv/h seems to be the wide range of possibilities.
but, they have uranium ore in that room, which may add more radon. ;)
@bionerd23 I agree. OH! One more thing I wanted to mention! At the beginning of this video you can see the "random walk" of very low energy electrons scattering off the orbital clouds of atoms in the chamber gas!! If you google "Monte Carlo simulations of low energy electrons in solids" and go to the first link you can see a computer sim of what it should look like, and this matches it!! I have NEVER seen this in real life before. Must've watched this at least 10 times already, soo coooool!!
i love seeing the invisible universe!
Ghostx510xx 1 month ago
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whotaughtyou 1 month ago
Very interesting.
Barotropic 1 month ago
When I was very young I was amazed by the cloud chamber at the Science Museum, London; but sadly, they don't have a cloud chamber there any more. I share your enthusiasm for this equipment!
Brownian Motion observed inside a smoke cell is also fun to see.
SteffanLlwyd 6 months ago
@SteffanLlwyd I went to the Science Museum a few months ago specifically to see the cloud chamber. Very disappointed.
asteroceras 3 months ago
@asteroceras Did you see the YouTube vids (animations) on quantum weirdness? They are great....
One thing that struck me at the Science museum is how much more modern and functional the Newcomen Atmospheric Engine looks compared with the later and more ornate Boulton and Watt Engine. I love that place still. Life changing place and a national treasure!
SteffanLlwyd 3 months ago
wow, that is amazing. I would love to see it in person.
CornMakesWhiskey 6 months ago
what kind of metal do you use between glass and solid co2?
peregrintuks 7 months ago
THORIUM 232!!!! 1:34 XD
TempleBellMusic 7 months ago
How do I make one of these cloud chambers to see this experiment in person. I love to give it a try. I find it to be very interesting. Do you think it's possible for an other world to exist within our own world? Like living energy, or maybe like organisms that are pure energy or radiation.
Chris7771369 9 months ago
@Chris7771369
just google or youtube search for DIY cloud chamber or whatever, you'll find more than enough, including "starbucks cloud chamber". just google it. :P
and well, we all are living energy. all energy in the universe is either in the form of radiation, or in the form of mass, and can at least partly be converted (radioactive decay, nuclear fission). if we were to turn all of an atom into energy (and not just fission it into two or three pieces), all hell would break loose. ^_^
bionerd23 9 months ago 4
@bionerd23 Ok thanks I guess. =/ And yea very true I agree we are all living energy just in different forms. You seem pretty intelligent. Do you think or believe that the universe is eternal? And that the universe recycles itself over & over again from the big crunch & big bang? I feel this is possible & true. Like expanding then compressing over & over again. Just like a circle with no beginning or end to it. O
Chris7771369 9 months ago
students are taught that the rate of decay of a specific radioactive material is a constant.if a radioactive element was shield from the cosmic waves/background radiation it would cease to remain radioactive,There is no energy in matter other than that received from the environment.long-term observation of the decay rate of silicon-32 and radium-226 seemed to show a small seasonal variation. The decay rate was ever so slightly faster in winter than in summer, thus Einstein is Wrong. Period
sn1pe352 10 months ago
@sn1pe352
thanks for the comment - i heard about that, too - radioactivity increasing / decreasing with e.g. solar activity. maybe radioactivity is something that is more or less likely to be induced in EVERY element, depending on properties. maybe there's NO stable element, as radioactivity depends on an outside factor, some kind of force carrier particle, that can induce it... it every nuclide. it's possible, but i havent seen valid proof for it yet. it's something to consider, though.
bionerd23 9 months ago
@bionerd23 Hello I'm glad to see your open minded response to such claims, well with new theories and experiments being published daily there are many observable experiments shown, just imagine if someone claimed radioactivity is variable dependent on sun-earth distance before you read that article-scientific journal(you'd probably think it was silly<3), I have many experiments using scientific method that can show you, and if im correct than textbooks re-written+"Over-unity" is a fact of nature
sn1pe352 9 months ago
@sn1pe352 That's very interesting. I had no idea!
SteffanLlwyd 6 months ago
@SteffanLlwyd very little people do :(
Sadly it's been proven beyond a reasonable doubt, the problem is standard models take a lot of frictional resistance and time to change, therefor it will be quite a while before mainstream academia has the courage and wisdom to reconstruct standard model theorem
The distilled essence can be found in large by great minds such as
Nikola Tesla's Dynamic theory of Gravity and Walter Russell's Electric Cosmology
Understanding this is key to "Higgs Fields"
sn1pe352 6 months ago
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marisoldickson 10 months ago
We were in a Nuclear Plant a week ago with the school class. They have showed us this kind of cloud chamber and I was like: I NEED THAT IN MY ROOM!!!! So: Is it possible/hard/difficuld, to build a such chamber on my own?
SwissGuitarStarter 10 months ago
THIS IS THE COOLEST THING EVER!!!! (And by the way, double alpha decays, to my understanding, are the Radon atoms that have already released an alpha particle, turned into Polonium, and released another one.)
alpop850 11 months ago
I think I'd like to shag the narrator <3
then33k4 11 months ago
i have no clue whats happening. What happens if you breathe in whatever that is?
dsidewd 11 months ago
@dsidewd
well, you're breathing most of the stuff you can initially see all the time, as that's natural radiation that surrounds all of us. :)
as for the radon - the radioactive noble gas that was injected - a small dose will not do anything, either, but if you're chronically exposed (like e.g. the uranium miners used to be exposed to it), it is very likely to give you lung cancer. only smoking bears a higher risk of getting lung cancer.
bionerd23 11 months ago
@dsidewd ur dead
::p
Mr444jdb 10 months ago
@dsidewd Well if you were to breathe in iso-propanol enriched with radon gas, you'd collapse pretty sharpish with a lack of oxygen and then you'd die and then get cancer whilst you're dead. Admittedly this is pretty much the worst case scenario but it's definitely possible :) I love science.
Kempter1 8 months ago
look in the blue sky when its sunny, you will see little bright rotating dots, thats the cosmic energy aka orgon...
Fl4k 1 year ago
There are muscles attached to your tongue, jaws and lips. Use them.
brukernavn1 1 year ago
The Radon 220 subsequent alpha decays greatly reminded me of Feynman Diagrams. Wonderful work and videos! I hope to visit Berlin someday.
5HT725 1 year ago
Congratulations for this extraordinary recording of the double successive alpha emission by Rn!. This can be also seen in a homemade cloud chamber in a less exciting, but a convincing way.
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She blinded me with science.
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lavonnajenny 1 year ago
Hello,
Thanks for that great video (and all the others about radioactivity!), it's the best video of a "Phywe" cloud chamber !
I made a little website to sum-up a few experiments one can make with a homemade cloud chamber :
chambrebrouillard.wifeo.com
samol1234567890 1 year ago
@samol1234567890
thanks for the link (dont anybody dare to mark this as spam just because it contains a url)!
pretty amazing photos you've got on that site, especially about the compton effect or e.g. pair production!
bionerd23 1 year ago
@bionerd23
Yep, sorry for the little spam.
I'm glad you liked the pictures, and coming from you it's even more rewarding.
Regards
Samuel
samol1234567890 1 year ago
@samol1234567890 Nice site. Also, I have a bunch of peltier devices so I perhaps I'll build one. I have actually bought 10 peltiers, each 90 W.
vmelkon 1 year ago
between combustion, nuclear sciences, and electronics, people must be magical to make things like when the radon was added. lol jk, but seriously, its amazing to think we've come so far. i dont want to be technologically challenged when im old. "dad...dad...DAD I GOT IT! *teleporter/portal activates* its a teleporter, dad. its not exactly quantum multidimensionable gravitational destablization physics." -_-,,
Pimpmastahanhduece 1 year ago
@Pimpmastahanhduece
well, yeah... but we're still just in the process of SEEING, GRASPING and UNDERSTANDING all the magic of science among us... it's not like we ever invented anything new that the universe did not yet create way before we did. :P
bionerd23 1 year ago
all we are doing is moving energy. but i think there are lots of things that were invented and didnt exist in nature. namely, vehicles. science is not magic because it relies on what has been observed and found mathematical correlations. magic would to use a something that relies on purely metaphysical observation. to just make from nothing from w/e, spell, curse, potion, ect. is magic. science is about exploitation of nature and provided materials, magic is more like overwriting the data.
Pimpmastahanhduece 1 year ago
@Pimpmastahanhduece
well, i guess i used "magic" in a different way than you imply; by "magic", i meant "something that is really stunningly awesome". like, a "magic moment" can be when you discover the beauty of a uranium crystal under the microscope. sorry for the confusion.
sure, and e.g. a bus wouldnt exist in nature, but many forms of transport do exist. it's still just a form of "work" (power*way).
bionerd23 1 year ago
how do they get such a short lived radioisotope injected in the chamber in time? it has to be freshly produced somehow
quaxk 1 year ago
@quaxk
yes, it is continuously produced "fresh" from THORIUM ORE! :)
bionerd23 1 year ago
why no magnets???? would be awasom to see those lines spiral. can u post a video of this with a magnetic field around the chamber???
adigalland6 1 year ago
@adigalland6
very good idea, but i'm not sure if they'd let me do this - after all, it's not *my* cloud chamber!
bionerd23 1 year ago
Do you know of anyone, who has watched through a ''near infra-ed or ultra-violet camera'', to see what's in that part of the spectrum, that's both invisible to our eyesight, & what's moving the alcohol vapor? It's identified as 'alpha & beta particles', o.k. but, it's going on all around us, with the cloud chamber creating an environment for observation of said 'particles' that are beyond our eyesight! Or, are they? Hmmmm.....
crlwllns 1 year ago
@crlwllns
well, electromagnetic waves (ionizing radiation of "light", i.e. UV, x-ray, and gamma radiation) is not visible within the cloud chamber, sadly. only particle radiation is visible. hey, but there's quite a lot of particle radiation all around us - alpha decays from radon, protons coming in from space, all that. =)
bionerd23 1 year ago
@crlwllns
MisterBookworm 1 year ago
Wow. I was there when I was a kid, but didn't enjoy it as much as I think I would today... must go there again - thanks for showing us :D
lesconrads 1 year ago
very cool
1:55 for most epic part
JosephGubbels 1 year ago
very cool
1:55 for most epic part
JosephGubbels 1 year ago
wow! this is incredible! thank you so much for posting this. how does it work exactly? why can we see the atoms decaying? it's almost like you can see the universe as it is instead of how we interpret things!
don't listen to the morons who only take criticism of your voice personally. they just have no appreciation for the world around them.
bdjrs 1 year ago 4
@bdjrs
well, to sum it up - there's a large temperature gradient within the camber. you know how cold air can take up much less humidity than hot air, right? that's why we speak of RELATIVE humidity and a total moisture per cubic meter. well, with a cold (-40 degrees C or less) bottom and a heated top of the chamber, the isopropanol vapors coming from near the top will make the air heavy so it sinks to the bottom, where it cools down rapidly.
bionerd23 1 year ago
@bdjrs
(cont)... as it still contains all that alcohol, it will be "supersaturated" for the given temperature. within this environment, particle radiation will leave "trails" of ionization within the "fog", which is basically just condensed moisture on the created ions.
bionerd23 1 year ago
Kind of sexy...
Spetet 1 year ago
Thanks for posting this rare (for most of us) demonstration of particle physics. I can see why you like it. I also happen to think that you express yourself wonderfully and would ask you to lunch in a heartbeat!
chuanist 1 year ago
gorgeous!
wanypie 1 year ago
Very cool. Thanks for posting.
Are you talking without moving your mouth?
viking1324 1 year ago 9
@viking1324
i was told i dont use my lips much when talking, yeah. dunno though, i think i am using them normally, but i find it hard to compare. i am visible in e.g. watch?v=Mj0HDN82Pfo if you want to check it out.
i was never really good at talking, though, like i used to talk waaaay too fast in my youth, and without any pronounciation. i guess what you're hearing now are the remains of that impairment.
bionerd23 1 year ago 3
i wish i could understand the significance of this.....
DCarlesso 1 year ago
Thank you so much for the video! Didn't know this could be done! It's so beautiful!
coconutuk 1 year ago
i wanna touch it.
TheRmiBoys 1 year ago
Maggots I tell you.. MAGGOTZ!!
Timsta1010 1 year ago
Wow cool science and a cute accent. To bad I am married!
vashcat 1 year ago
Hey, nobody's called her a nazi yet :(
tbramhall94 1 year ago
That's really neat:D hehe I wonder what happened when u stick your hand in there lol :P
Mswolfhugger 1 year ago
awesome! thanks for posting this!
edmo321 1 year ago
Clearly the best display I have ever seen. I have no doubt that your vid will be shown in classrooms throught the world. You should get an award for posing this!
clagwell 1 year ago 6
@clagwell
why, thanks - but i think they should rather display real cloud chambers than just videos... a tiny cheap expansion cloud chamber with an exempt quantity of e.g. Am-241 would suffice. ;)
bionerd23 1 year ago
DOES THIS VIDEO COME WITH SUBTITLES ? :/
MTKTOXIK 1 year ago
hate alex jones. Thinks people are stupid for watching LeBron james youtube videos and not his.
SandraBullcocked 1 year ago
Tracks in the sky from airplanes? Oh no please Alex Jones and the rest of the doomsday/conspiracy theory crowd told me that its chemicals meant to dumb down the masses. I simply can't believe cold hard science in the face of feeling helpless in light of threatening NWO conspiracy theories.
SandraBullcocked 1 year ago
2:12 Double Alpha decays???? WOOOOW, what does this mean! Whoa Wow. *sobs Double Alpha decays all the way.
trinidadrrc 1 year ago 28
@trinidadrrc
lmao ^_^
bionerd23 1 year ago
@trinidadrrc Hilarious!
wildstar314 1 year ago
cloud chamber, clouds are in the sky.
Pimpmastahanhduece 1 year ago
@trinidadrrc First one alpha decay (Rn-220 -> Po-216 + alpha), then another (Po-216 -> Pb-212 + alpha), mostly within a second. For true double-alpha decay check out Be-8 (nothing is left). Half-life is just a wee bit short (sub-femtosecond) due to the extreme stability of two helium nuclei in comparison.
dajwilkinson 1 year ago
WHO PAYS FOR THIS??!
mikeceez123 1 year ago
Pretty cool.
TheDarkSagan 1 year ago
and no one cares :D
MorphIntoCouch 1 year ago
Awesome, so cool!
Aizsaule 1 year ago
im 33 and what is this?
yamaha893 1 year ago
@2:01 In the most boring voice ever.. oh my god I love this, oh this is so insane. Please use your robot voice next time the excitement is overwhelming!
The0truth42 1 year ago
@The0truth42
lol, sorry. i suck at expressing feelings. you'd hear and see me "bored" and with no facial expressions - but if you'd measure my blood pressure, heart frequency, and adrenaline levels, you'd know that i am *very* excited about this. ;)
...i'm just crap at expressing that in a typical human-compatible way of communication.
bionerd23 1 year ago 10
@bionerd23 I could here your excitement. Our media has trained, us to think that unless people are having the emotional equivalent of diarrhea they are not having feelings.
michalchik 1 year ago
@The0truth42 i don't agree with you 2:01, this voice is very expressive in spite of its steady tone. And what i see here is pure art!
ventouse 1 year ago
????
SuperOORAH 1 year ago
uh...
ThaBasementBoys 1 year ago
yea..... dont know whats going on.....at all
tsquad23 1 year ago
@tsquad23 Radio active substances are decaying at different rates. She used (I think) Radon 220, a radioactive element. It is classified as radioactive because it emits certain particles called Alpha Particles. These particles are positively charged, and are comprised of 2 protons and 2 neutrons bound together as helium: this is called alpha decay.
When enough of the radon has decayed, it reaches a point where only half of the substance remains. The time it takes is called half life.
yanging 1 year ago
@tsquad23 What you are seeing are the vapor trails of the emission of these alpha particles in a super-saturated cloud of isopropyl alcohol. She also mentions polonium-216 (I think), because this is the element that is created when radon-220 decays once (one alpha particle has an atomic mass of 4, so 220-4= 216.) She mentions that the reason these V shapes are created are because the polonium-216 has a very short half life (0.164 seconds I think she said)
yanging 1 year ago
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yanging 1 year ago
@yanging So, this process continues until all of the radon/polonium decay into stable isotopes.
yanging 1 year ago
@yanging and that isotope will, eventually, be lead (Pb).
yanging 1 year ago
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yanging 1 year ago
I understand almost nothing about this subject. I'm a philosopher. But this was so interesting to watch!
jbenvenga 1 year ago
oh man, that was so rad. and I like your accent bionerd, I had no problems understanding
adriank1223 1 year ago
her voice makes me horny
theraccoun 1 year ago
Floppy Nutsack FTW!
megadragonslayer21 1 year ago
Bionerd is a sexy bitch
MrMcDugan 1 year ago 3
I messed around in college with a cloud chamber, the double alpha decays that you are getting for Radon is amazing! I wish we had thought of it when we did this.
Were you cooling with liquid nitrogen? I was wondering when we were doing this what it would be like cooling with som He3
frigginyates 1 year ago
@frigginyates
"i" was not cooling it at all, it was at a museum. ;)
but they were using peltier modules to cool it down to about -40 degrees celsius.
a liquid helium cooling, like used for MRI scanners and such, sounds a little bit like an overkill to me, though. o_O
bionerd23 1 year ago
@bionerd23 In the lab I worked in he had some He3 and I always thought that it may make a better cloud!
frigginyates 1 year ago
radioactivity comes in lines?
1schwererziehbar1 1 year ago
COOL! It's pretty much how you would imagine it, but it still adds so much to be able to see it happen before your eyes.
DrakeDun 1 year ago
what language she speaking? its not US english I can only understand every 3 word
186 1 year ago
@186
sorry, english is not my mother tongue. i speak tlhIngan hol usually, and am not really all that familiar with your goony human languages.
bionerd23 1 year ago 24
@bionerd23 I was able to understand you very well. Thanks for the interesting video, though!
benifyfully 1 year ago
@bionerd23 You english was fine, I think he was referring to the jargon.
frigginyates 1 year ago
@bionerd23 Your English is great. Don't worry about it, I understood you perfectly.
Great demonstration! Science, physics, chemistry.....I love it all!
planetrob555 1 year ago
@bionerd23 english is not my mother language and I understand everything
GOSUPitZ 1 year ago
@186
German accent, was speaking English
levlobotomy 1 year ago
@186 I understood her just fine. She speaks English better than most of us speak any other language.
marksbooker 1 year ago
@186 then you have problems hearing. OP, you speak very good english, slight accent, but everyone has one. Don't worry about trolls.
D14852001neko 1 year ago
@186 guess u don't understand English. I can understand everything she says.
Zer0OZero 1 year ago
@186 They are just scientific terms you dont understand, maybe havent heard before. the english is fine. I go to college with many foreign professors such as persian, chinese, european, and indian, so i am used to accents.
101111101101 1 year ago
The background at the beginning is mostly made of cosmic rays. The long straight thin tracks are from muons and the shorter thin tracks changing directions permanently are electrons. The electrons are lighter than muons and therefore they scatter a lot more.
TheChunguTube 1 year ago
@TheChunguTube
"mostly"? are you sure? i'd say quite a bit may be from cosmic rays, but wouldnt there also be a lot from natural background radiation?
bionerd23 1 year ago 2
@bionerd23 cosmic muons appear at roughly a rate of 1 Hertz per 10cm^2
adamcadien 1 year ago
@bionerd23 Cosmic rays have more energy and therefore can travel through the walls of the buildings. On the other hand the energy of beta decays is limited and the beta particles (electrons or positrons) do not go very far. So the radioactive background in the cloud chamber has to be very close to the chamber. Plus there is just a lot of cosmic rays falling down, typically 1 per cm2 per minute. (number from the Particle Data Group)
TheChunguTube 1 year ago
@TheChunguTube
hmm, but radon is also accountable for about 50 Bq / m^3 (in my region; can be up to 10.000 Bq / m^3)... that'd be about 5-10 decays / second inside that cloud chamber area from radon alone (alpha radiation). then, there are also the daughters of that, which will be accountable for some of the beta radiation. hmm, not sure. definitely gotta look into that some more.
bionerd23 1 year ago
half life!!!!!!!!!
UserName222222 1 year ago
at first i thought the voice was glados from portal...
explodingbarrel2 1 year ago
wow.. science is cool
cavephar 1 year ago
oh my god i LOVE this!
oakoivunen 1 year ago
This is the coolest thing I've seen in a while.
Fmeson 1 year ago
Nice!!
Do they use a Th compound to release the radon?
plutoniumiscool 1 year ago
@plutoniumiscool
yeah. not sure which, they just said "thorium salt", but it's molecules containing Th-232 atoms, anyway. :P
bionerd23 1 year ago
@plutoniumiscool you can bet your fucking ass they do! SCIENCEE N SHIT, NAHMEAN?
WuTangThang 1 year ago
nerdgasm
FuturamaIsBackBaby 1 year ago
Awesome
SuperCrazyStorm1 1 year ago
LOLZ - stumbled across this accidentally. It is a little above my head, but the enthusiastic description made a great video.
777strongcoffee 1 year ago
Oh yeah...love those alpha decay's! Mmmmmmmm so hot.
318i 1 year ago
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maortrol 1 year ago
Amazing demo of that radon gas. That's a huge cloud chamber too.
Thallium208 1 year ago
whut the fuck is that??? what do you do with it?
beeqool 1 year ago
Unfortunate that stuff like this goes so unappreciated by so many people. I think this is absolutely awesome but I don't personally know a single person who would share my liking. :(..
What I think is one of the most amazing aspects is the particle speed. Reading the numbers for the speed of these particles is one thing, but to have it visually displayed like that is something completely different. Fascinating.
darkshadow851 1 year ago
exciting pictures!!
There are also in Dortmund, a public cloud chamber at the DASA exhibition.
MorganOthelloLafay 1 year ago
Loved this so much, i want to come to the museum!
pympmachine 1 year ago
awesome!
hoboX10 1 year ago
Simply awesome! Thank you so much, I shall be difinately showing this to the kids I teach when radioactivity comes around :D
nickmt 1 year ago
I have inserted an big neodymium magnet (about 500g) into my cloud chamber and so the bended tracks can be seen very good especially with low energy beta particles.
Here is the link to my video
/watch?v=59uJwfq-xCs
Flachzange1337 1 year ago
I wish they had a powerful magnet so we could see the spirals that charge particals make as their orbits decay in a magnetic field
michalchik 1 year ago
@michalchik
yeah, that's what i suggested as well - along with having a beta emitter such as Sr-90 or an alpha/beta emitter such as Pb-210. =)
i hope they'll do that some day - they said they'll notice me via email if they get new sources. yay!
bionerd23 1 year ago
@bionerd23 Have you done any calculations to figure out the strength of magnet required?
michalchik 1 year ago
@michalchik
not precise calculations, no - the huge alpha particles (two protons and two neutrons) are much harder to distract than the little lightweight electrons (beta particles) - and the rest is dependent on the particle's energy; however, i dont know the precise conversion, e.g. "beta = for every 100 keV, you need 5kg "strength" of the magnet" or whatever. however, i did an experiment with a 27kg neodymium magnet vs. Sr-90: watch?v=adGVpHvEyUU
bionerd23 1 year ago
Looks cool!
Shaneharro2 1 year ago
OMG WTF THIS IS ONE OF THE COOLEST THINGS I HAVE EVER SEEN!
MaBuSt 1 year ago
This has been flagged as spam show
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whenisneveragain 1 year ago
I will definitely visit.
foospecial 1 year ago
That is spectacular, thank you for sharing.
Pipewing 1 year ago
WOW, i saw pictures but didnt think it was like this! Want one as my kitchen table
GLeNss 1 year ago
Boaah echt krasses Video, vor allem als das Radon da reingepustet wird.
transistorbrater 1 year ago
Holy crap that amazing how you can see the particles like that.. Its amazing how you can see radiation but with this now you know what is actually touching you
1ownjoo2 1 year ago
For best results, when the radium 220 is first in the cloud chamber, turn the vuvuzela button on.
supersproutify 1 year ago 13
@thelleht
well, if you've got any technology museums near you, or scientific schools, i suppose i'd try asking there... good luck!
bionerd23 1 year ago
Holy Fxcking crap that is the most amazing thing I've ever seen!!! Thank you so much for posting that, I'm going to watch it like another 10 times or so now!!!
Is the previous "background" though still contaminated with 220Rn and its daughters from previous demonstrations, like 212Pb?
AScannerClearly 1 year ago
@AScannerClearly
yeah, i'd say so - though due to the greater half lives (there was not much of an activity even with Rn-220 to start with!), i suppose you can ignore that and just call the decays in there "background radiation". :P
good thinking though! and i'm glad you love the video as much as i do! \o/
bionerd23 1 year ago
@AScannerClearly I believe that it DEFINITELY is still contaminated with the Rn daughters as that is wayyyy too high activity at the begining of the video to be normal background radiation in there. Compare to the same device at the SF Exploratorium here: watch?v=zxHvqWcTfMk or the device at Langsdorf here: watch?v=z5v5gVB-TJ0 Backgrounds are way lower, I suspect because this Rn gas demo is pretty rare and not done there(I've never seen it before!! and it's fucking zupercool!!!!).
10mintwo 1 year ago
@10mintwo
first mentioned has quite a similar amount of beta decays; however, the fog is very "thick" and not as good as in the cloud chamber i saw, so i suppose that's part of the problem / why less trails are visible. also, you'll have to consider background radiation in general - which can be really different depending on your geographical region! between 0.05 and 0.5 uSv/h seems to be the wide range of possibilities.
but, they have uranium ore in that room, which may add more radon. ;)
bionerd23 1 year ago
@bionerd23 I agree. OH! One more thing I wanted to mention! At the beginning of this video you can see the "random walk" of very low energy electrons scattering off the orbital clouds of atoms in the chamber gas!! If you google "Monte Carlo simulations of low energy electrons in solids" and go to the first link you can see a computer sim of what it should look like, and this matches it!! I have NEVER seen this in real life before. Must've watched this at least 10 times already, soo coooool!!
10mintwo 1 year ago
@10mintwo
wow, thanks for the hint! well, there's a computer sim for just everything now i suppose, lol. way cool!
bionerd23 1 year ago
Amazing video, Radon 220 is pretty awesome :)
nhojmabon 1 year ago
This is very cool.
Sehr Geil!
Proph3tTroyer 1 year ago
really cool video! Its much easier to understand now.
EA78751 1 year ago
it looks like a bunch of chicken tracks doing, well, the funky chicken.
Anyway, that is totally awesome. Wish we had something near us like this.
PsychoticBovine 1 year ago
best video on youtube!
tooool 1 year ago
This has been flagged as spam show
@bionerd23
$31.000, or $31,000? as in thirty one to 3 decimal places or thirty one thousand?
liquidgrain 1 year ago
@liquidgrain
jeez, i hate those tiny differences between the US (and i guess, canadian) way to spell numbers and the german way. :P
anyway, of course it does not cost $31, but rather thirty-one thousand united-states dollars. you could've figured. ;)
bionerd23 1 year ago
Wow next time I am in berlin I will visit the museum oO
RazielKain 1 year ago
that is so crazy
M3VIII 1 year ago
very interesting!!!