Sorry Professor, but ballast weight in most planes, at least those of airliner size, is almost always at the tail. The depleted uranium ballast weight in the tail of a crashed 747 cargo plane featured notably in the case of the Bijlmer disaster (El Al Cargo flight 1862) in the Netherlands.
I would go to study in the University of Nottingham just to study under this scientist... very easy listen to and knows EXACTLY what he is talking about, and could put Uranium enrichment considerations into complete layman's terms so anyone could understand it, which is an important aspect of being a great scientist. great channel, subbed
I love how the Prof's glasses double as safety goggles, that is a dedicated man. Always enjoy listening to him explain things, very articulate and easy to understand. As always, very informative video!
Uranium and other actinides (metallic form) are also pyrophoric (meaning it can oxidize easily with the air, causing sparks from the fine particles to ingite and even cause a fire.) The seperation of isotopes such as U-235 from U-238 requires a lot of energy. Many actinide isotopes are very unstable and radioactive, that they produce their own thermal radiation (heat), that they must be stored inside tungsten carbide. It has a much higher melting point than lead, and good radiation shielding.
So if you have 99.3% U238 and .7% U235 in a jar, how do separate the 235 from 238? He might have said it in the video, and if he did then I missed it.
lol, i felt like that as soon as i started researching atomic mass today.. i"m like, i know this is going to lead me to the atom bomb/uranium research next... uh ohhh
Just a few of things to pick up on. Firstly I always thought UF6 to be a crystalline solid at RTP.
Secondly,whoever did the DG label for the RADAC needs stringing up, Depleted uranium should be LSA-1 RRW Not a RRY label,and no UN number on it either, tut tut (UN2912). TI of 0.1 means RRW.
Thirdly, just to correct the Professor, Depleted uranium is used in aircraft on control surfaces,usually the elevators,ailerons and rudder to act on the trim tabs as a form of counter-balance
Using Uranium in airplanes for trimming is nonsens. If you are light weight you might have to use a trim weight in gliders because many gliders don't have a trim tap and trim taps also add unwanted drag. No commercial airplane adds weight for trimming.
@RocafellaAF1 Because all scientist looking like the old man are Jewish. There are some other scientists who look like jocks, just like the young guy does.
@Movieknight83: The science is simple; it's the engineering that is the problem. uranium hexafluoride is extremely corrosive, and the two varieties are only of UF6 are only 3 parts in 235+114, or about 0.9% different by weight. To be effective, the centrifuge speeds must be very high, and therefore the bearings and such have to be high precision. Breakdowns are common.
You didnt talk about bombardment enrichment, I've read about it being done, although the process is not a far cry from a stack reactor with a central target, but I don't understand why you need to have the material in the target in a substrate, why is this?
i appreciate the man behind the camera asking the questions he does, because those of us with no science background are wondering the same things! so please sir, dont be afraid to ask those "silly" questions because the answers are so often very interesting
@petokyo UF6 is symmetrical, leaving no area of the molecule significantly more negatively-charged than the other. This means that the intermolecular forces between the molecules are very weak. Also, because the compound is no longer a metal, it does not have the metallic bonding that uranium has.
I saw a coment on the 20 percent uranium that iran is said to produce, what is this 20 percent? 20 percent of u235 out of doing u238 container? so a block of uranium they have only have at most 20 percent u235?
@eLpeach Yes, 20% U235, 80% U238. This is considered highly enriched, sufficient for making a bomb (of the kind used at Hiroshima; the bomb used at Nagasaki and modern warheads use Plutonium). Reactor grade is about 3% U235, 97% U238.
@clumma For nuclear bombs, the conc of U235 is above 90%. I don't know what would happen if you used 20% but most likely it would not work therefore it is not used.
@vmelkon 20% is the official cutoff for LEU. You're right that most Uranium-based designs call for higher concentrations. The lower concentration increases the bare sphere critical mass and hence the size and weight of the weapon.
ahhh very interesting. Now i understand when they say Iran has started enriching uranium by 20%, close to the 93 mark. What is the number if your using uranium to build just nuclear power. Is it 92 - 93 also.
The photo of the Manhattan Project enrichment facility was actually a photo of the calutron, which was basically a huge mass spectrometer. It worked by using a beam of uranium ions and a magnetic field; the heavier particles were deflected less by the field as they had more kinetic energy.
I doubt the Bottom bit because that is slightly like bio warfare, and as the UN made nuclear ballistics illegal because of . However the depleted 'Uranium Bolts' radiation is extremely small or less harmful. Am I Right??? If not Sorry but You learn some think everyday
(I'm sure in 1985 Uranium is available in every corner drugstore, but here in 1955 it's a little hard to come by. I'm sorry Maty, but I'm afraid you're stuck here)
Mucha quimica y ciencia pero no conoce que para el pelo hay una solucion que contiene llamada shampoo y sobre todo acondicionador. Lo podria usar en su pelo no?
Sure there is. You can't find it just by looking at a newtonian diagram though, since it is of no real consequence. Think of centrifugal force as the impact force from the uranium unto the centrifuge wall, and you'll sort of see what I mean.
I agree though, he should've said centripetal force, it's the only thing that makes sense to use :).
Centrifugal force is an imagined effect though. If you go round a sharp corner in a car you feel the car pushing inwards towards you, we imagine that we are being pushed out because our brains tell us that that makes more sense.
Like I said that's an illusion. You are held in place, so to speak, because the fairground ride is pushing IN on you; your brain tells you you are being pushed out.
But how does a solid object like that, that doesn't appear to warp or change it's shape, push in from every direction towards the center, above the source of the spinning (the motor/engine/whatever)?
Check out the Wikipedia article on centrifugal force; read fictitious centrifugal force. This is what youre referring to when talking about yourself being "pushed out" in a fairground ride.
@SpellboundSolution But it's a real effect when it comes to materials of differing density. And if humans are of a certain mass then it will ahve an effect on us too. Or am I wrong?
Acceleration toward the centre leads to rotary motion - an object orbiting around a point at a constant linear velocity is accelerating inward, if the force was applied in the opposite direction the object would spin outwards.
Imagine you are moving along with this object: you will be pulled inwards due to your non-acceleration but it will FEEL like you are being pushed outward. That is the key point: it is an imagined force, not a physical force.
fewer nuetrons is unstable because you are packing the protons closer together and they want to repel each other they have all the same charge. like two ends of a magnet repel each other. you can also have too many nuetrons but that doesn't not really apply to Uranium. 238 is more abundant mostly because it is more stable and is more easily formed due to its higher nuclear stability
Would the output of power from a nuclear plant truely be worth the input of power it would take to enrich the uranium. It sure seems like it takes a lot of energy to do this.
Only if you measure the energy input. What you're not taking into account is the immense "stored" energy of the atom which is released in a reactor or weapon.
Well it apparently is since everyone's doing it. And the amount of energy is HUUUUGE. Imagine when we get fusion reactors going on. You could provide electricity to cities with just one plant.
@PrivateSlacker The radioactivity is too low but you would be able to intoxicate people. I guess they would die of liver failure and whatnot if they don't go to the hospital.
I wonder if this could work on a small scale. Rather than using a battery of centrifuged, only 1 or 2 are used, but with buffer tanks between the steps.
I know the output would only be a fraction of what large scale manufacturing can produce, but for research purposes, very little of the element is usually needed.
But's this is just me trying to be an armchair engineer. I'm obviously skipping some steps.
I learned all about this in my high school chemistry class, as I grew up very close to the Goodyear Uranium Enrichment Plant in southern Ohio. Gaseous diffusion operations were shut down a few years ago, and now they've begun using centrifuge technology to enrich uranium to a non-weapons grade assay.
Why enrich uranium when you can get depleted uranium and produce small amounts of plutonium? Add a neutron to U-238 to get U-239 decays to Np-239 which decays to Pu-239, weapons grade plutonium.
If people like the Professor and his colleagues were on TV more often than some of the 'science journalists', the public would be much better informed about these sort of issues.
fascinating yet succinct explanation Prof.Glad people can't make it in their bedrooms! Seriously though, great tutorial.. wish my Chem teachers back in the day could communicate/explain as well as you!
Great video but I'd like to add that there's no such thing as centrifugal force. Rather the lack of centripetal force. Take for example a car taking a corner. Its contents are travelling in a straight line but as the car turns the contents are shifted to the side because they are continuing in the same direction whereas the car changes direction. The lack of centripetal force causes the object to slide. I love Chemistry but my Physics professor has drilled this into my mind
Strange. I had always assumed radioactive enrichment was a process of converting more stable isotopes into less stable ones... not throwing out the stable isotopes.
man this is good stuff!! i really enjoy these videos. just a thought... maybe if he filmed in front of a green screen.. he could make the background look as if he was giving this lecture from frankenstein laboratory hehe.. now that would be pretty cool
Is there an upper limit to how pure centrifuge enrichment can can make U235? Conceptually, it seems like, if you just kept cascading it through your systems, you could wind up with pure U235 (well, UF6 where the Uranium is 100% U235).
what are the odds of a natural event of uranium excited, like explosion? or radioactive poison? what is radioactive poison, and where does it hang out? great vid
Sorry Professor, but ballast weight in most planes, at least those of airliner size, is almost always at the tail. The depleted uranium ballast weight in the tail of a crashed 747 cargo plane featured notably in the case of the Bijlmer disaster (El Al Cargo flight 1862) in the Netherlands.
lekoman 6 days ago
So many bottles..
jordanpasek 1 week ago
Damn you've just given it away to Iran
sedwarg 2 weeks ago
thanks for the tut!
MVrockersPS3 3 weeks ago
very informative, thank you.
IcedStick 1 month ago
5 people are blondes
voon100 1 month ago
THERE IS NO SUCH THING AS 'CENTRIFUGAL FORCE!' aaaaaagh !!!!
elbasrever 1 month ago
the puffy hair makes him look more legit.
Frost87112 3 months ago
@poplala45 I totally agree with you
XxfireballzxX 4 months ago
he looks like enstine
Spicyperson9123 4 months ago
I would go to study in the University of Nottingham just to study under this scientist... very easy listen to and knows EXACTLY what he is talking about, and could put Uranium enrichment considerations into complete layman's terms so anyone could understand it, which is an important aspect of being a great scientist. great channel, subbed
zillionz 4 months ago
I'm making a bomb now
danx033 5 months ago 2
@danx033 need a hand?
zillionz 4 months ago
@danx033 where are you going to the uranium?
Spicyperson9123 4 months ago
oh look! the poliakoff schrödinger cat!
appelelle 6 months ago
NOW I realize what Einstein meant when he said doing *all of that shit* is a hell of a way to make yourself a nice cup of tea during Coronation St.
donnyab 6 months ago
I was offended when he said centrifugal force, it dosent exist he should know that really its pretty basic physics.
jamesn0va 8 months ago
I love how the Prof's glasses double as safety goggles, that is a dedicated man. Always enjoy listening to him explain things, very articulate and easy to understand. As always, very informative video!
punishedexistence 9 months ago
92 9+2= 11 doodoodooodoo
slackkeylady 9 months ago
92 9+2= 11 doodoodooodoo
slackkeylady 9 months ago
3 people can not even understand how peanut butter is made :P freakin wankers anyway
theeAlphaOne 10 months ago
@tla123456 plus he's got the look.
turtlewalzer 11 months ago
I don't know why but you look really smart! I think it is because of your hair. Good informative video.
SomeDude881 11 months ago
Wow, Great Explanation! Thank You very Much!
sherlock72 11 months ago
Let's say I have a piece of uranium ore. How can I clean it from all the dirt and rocks, so that I would get as clean/pure uranium as possible?
ParaglidingManiac 1 year ago
Uranium and other actinides (metallic form) are also pyrophoric (meaning it can oxidize easily with the air, causing sparks from the fine particles to ingite and even cause a fire.) The seperation of isotopes such as U-235 from U-238 requires a lot of energy. Many actinide isotopes are very unstable and radioactive, that they produce their own thermal radiation (heat), that they must be stored inside tungsten carbide. It has a much higher melting point than lead, and good radiation shielding.
KarbineKyle 1 year ago
Every time I see this man it makes me excited for chemistry class :D
QwertySkill 1 year ago
Very helpful!
Respect and love from pakistan for u sir.
ASAM90 1 year ago 22
@ASAM90
Did you watch the whole video?
-Cary
CaryTheEagle 1 month ago
@CaryTheEagle yeah i did watch
ASAM90 1 month ago
@ASAM90
Ok, I was just wondering cause they talked about how much more complicated and hard to do than it seems at first glance.
--Cary
CaryTheEagle 1 month ago
@CaryTheEagle yes it needs devotion.pakistan became nuclear power in around 27 years.
ASAM90 1 month ago
So if you have 99.3% U238 and .7% U235 in a jar, how do separate the 235 from 238? He might have said it in the video, and if he did then I missed it.
dclaver2 1 year ago
Who the hell thumbed down the video deserves to be enriched with Uranium 235.
carlosewm 1 year ago
8:17 - Not true! I milled 50 pounds of yellowcake this month and used 30 pounds of it for conversion to UF6.
TheBubaSqua 1 year ago
3 people liked the way they lived in the stone age
togo002 1 year ago
i feel like the FBI is going to monitor me now...
toddissofullysick 1 year ago 41
@toddissofullysick
lol, i felt like that as soon as i started researching atomic mass today.. i"m like, i know this is going to lead me to the atom bomb/uranium research next... uh ohhh
Nchssmaria 3 weeks ago
The man with the hair drinks a lot of water. Stay thirsty my friend.
SonOfNye 1 year ago
i'm not english and i understand it very well ;D
micantatu 1 year ago
3 North Koreans didn't understand this video
drinksupreme 1 year ago
Thanks for making a video on this! I now have a way to enrich my Uranium.
tacoyum6 1 year ago
Just a few of things to pick up on. Firstly I always thought UF6 to be a crystalline solid at RTP.
Secondly,whoever did the DG label for the RADAC needs stringing up, Depleted uranium should be LSA-1 RRW Not a RRY label,and no UN number on it either, tut tut (UN2912). TI of 0.1 means RRW.
Thirdly, just to correct the Professor, Depleted uranium is used in aircraft on control surfaces,usually the elevators,ailerons and rudder to act on the trim tabs as a form of counter-balance
Aviation geek
goodbutstilleohheck 1 year ago
The bully-looking guy is an expert on Uranium. They've spent over a million dollars on his researches about the chemistry of the element.
DerAnstifter 1 year ago
@DerAnstifter hahahah bully looking guy :D
TVefactory 1 year ago
@TVefactory very few young people know as much about Uranium as the guy does!! And, yeah, the guy's face is that of a bully's!!! Am I wrong??
DerAnstifter 1 year ago
@TVefactory Ha ha ha ha!! I bet he spends his free time bullying out the poor nerd looking professor!!! LOL!
DerAnstifter 1 year ago
@DerAnstifter Lol why there is a stereotype of scientist being weak nerds. I am an undergrad. biologist, and kickboxer :D
MrRein1988 10 months ago
Using Uranium in airplanes for trimming is nonsens. If you are light weight you might have to use a trim weight in gliders because many gliders don't have a trim tap and trim taps also add unwanted drag. No commercial airplane adds weight for trimming.
cipfalco 1 year ago
@cipfalco I agree, trim tabs use aerodynamic forces not counter weights.
cheerdiver 6 months ago
why does every Scientist look like that??
RocafellaAF1 1 year ago
@RocafellaAF1 I suspect there is a special super-secret barber shop for scientists, hope I get there someday =)
rushianokun 1 year ago
@rushianokun haha same here.. but 4 real they really all do look like that. XD
RocafellaAF1 1 year ago
@RocafellaAF1 Because all scientist looking like the old man are Jewish. There are some other scientists who look like jocks, just like the young guy does.
DerAnstifter 1 year ago
Fantastic video!
ttdantt10384 1 year ago
Best 8 minutes i've ever spent on-line. Simple, clear concise info, very helpful understanding a book i'm reading! THANKS!
drbypass 1 year ago
it sounds simple, but enriching Uranium with centrifuges is an EXTREMELY complex process. It's a multi-BILLION-dollar science just to get started.
Movieknight83 1 year ago
@Movieknight83: The science is simple; it's the engineering that is the problem. uranium hexafluoride is extremely corrosive, and the two varieties are only of UF6 are only 3 parts in 235+114, or about 0.9% different by weight. To be effective, the centrifuge speeds must be very high, and therefore the bearings and such have to be high precision. Breakdowns are common.
puncheex 1 year ago
Great explanation. Thank you guys very much! I really like it!
cassiavc 1 year ago
Depleted uranium is found at the back of the plane, mostly where the rudders join the tail.
ammarishere1692 1 year ago
You didnt talk about bombardment enrichment, I've read about it being done, although the process is not a far cry from a stack reactor with a central target, but I don't understand why you need to have the material in the target in a substrate, why is this?
Love your videos!
tasilbhurn 1 year ago
That was fantastic, both of you. I wasn't aware one isotope was used destructively and one constructively - this has been good to know. :D
Wysthric 1 year ago
Two things i want from this guy First is his mind or at least some of his knowledge and the second is his hair i just love it.
brotheryang 1 year ago
awesome explanation, frizzy hair FTW !!!!! :D
Frost87112 1 year ago
Oh magoo you've done it again. 516 seconds of quality content, and you do it all for the love of science.
PvtKelly66 1 year ago
i love that guys hair! :D
THEkidYOUallKNOW24 1 year ago
Man~He has many water bottles.
s87343jim 1 year ago
Why can't you use lasers to "freeze" the neutrons in U238 ?
Roddyoneeye 1 year ago
mhm gonna check amazon for some stuff to enrich my stock of uranium :D
dunnobutwayne 1 year ago
How come school science is never this interesting.
voon100 1 year ago
3 people sneezed and hit the dislike button on accident...
xxfisher321xx 1 year ago
Your videos are simply amazing.
Richiizz 1 year ago
All geniuses have frizzy hair. Fact.
mint285e 1 year ago
@mint285e excuse that`s not true this teacher inspired bu albert enchtein the only one who has frizzy hair this is fact
almurabiton 1 year ago
@mint285e excuse me that`s not true this teacher inspired by albert enchtein the only the one who has frizzy hair this is fact.
almurabiton 1 year ago
@almurabiton hahaha It's okay buddy, it was just some sarcasm. I was only poking fun.
mint285e 1 year ago
@mint285e oh I am happy to know that , and thank you Dear
almurabiton 1 year ago
excellent explanation helped a lot!
engelteir 1 year ago
I can tell you work very hard to get that "mad scientist" look.
kickass36 1 year ago
i appreciate the man behind the camera asking the questions he does, because those of us with no science background are wondering the same things! so please sir, dont be afraid to ask those "silly" questions because the answers are so often very interesting
lejink 1 year ago
Where were you when I was taking chemistry in high school?
/it was 25 years ago, so probably some of you were in diapers...
AliasUndercover 1 year ago
Wow, I learned something today. Thanks
mj23thegoat 1 year ago
I'm surprised there was no mention of why UF6 is a gas.
petokyo 1 year ago 4
@petokyo UF6 is symmetrical, leaving no area of the molecule significantly more negatively-charged than the other. This means that the intermolecular forces between the molecules are very weak. Also, because the compound is no longer a metal, it does not have the metallic bonding that uranium has.
BlackSkullRacer613 1 year ago
10th grade chemistry
at least at my school
KaTZoNFiRe36 1 year ago
You know a man with hair like that knows what hes talking about ! XD
AwsomeAthiest 1 year ago 2
LOL if i made an enrichment plant it would probably do a chernobyl XD
Very good video, your a legend!
TopGearrules 2 years ago
I don't believe there is anyone far beyond this guy. He's a god
dollzandpinz 2 years ago
Great Vid, Sounded like a challenge at the end, Time to get started on my small scale enrichment facility. :)
awlangham 2 years ago
Very Educative. Thanks!
safolincon 2 years ago
I saw a coment on the 20 percent uranium that iran is said to produce, what is this 20 percent? 20 percent of u235 out of doing u238 container? so a block of uranium they have only have at most 20 percent u235?
eLpeach 2 years ago
@eLpeach Yes, 20% U235, 80% U238. This is considered highly enriched, sufficient for making a bomb (of the kind used at Hiroshima; the bomb used at Nagasaki and modern warheads use Plutonium). Reactor grade is about 3% U235, 97% U238.
clumma 1 year ago
@clumma For nuclear bombs, the conc of U235 is above 90%. I don't know what would happen if you used 20% but most likely it would not work therefore it is not used.
vmelkon 1 year ago
@vmelkon Note I said "considered".
See wikipedia entry for Enriched Uranium, section 1.4
clumma 1 year ago
@vmelkon 20% is the official cutoff for LEU. You're right that most Uranium-based designs call for higher concentrations. The lower concentration increases the bare sphere critical mass and hence the size and weight of the weapon.
clumma 1 year ago
ahhh very interesting. Now i understand when they say Iran has started enriching uranium by 20%, close to the 93 mark. What is the number if your using uranium to build just nuclear power. Is it 92 - 93 also.
TheKrazySystem 2 years ago
Thanks Periodic Videos! I'm writing a report on atomic bombs and U and Pu. This vid helped me understand enrichment and isotopes a lot better.
gallerdude 2 years ago 20
@gallerdude
Glad to have helped...
periodicvideos 2 years ago 17
7:51 "Clouds of radioactive UF6 pouring all over the place!!" Epic!
conformerwithnocause 2 years ago
great video i actually understand. thank you very much
feelingthis1989 2 years ago
The photo of the Manhattan Project enrichment facility was actually a photo of the calutron, which was basically a huge mass spectrometer. It worked by using a beam of uranium ions and a magnetic field; the heavier particles were deflected less by the field as they had more kinetic energy.
skonkfactory 2 years ago
wow... didnt know that second part...
but isn't DU also used in the armor plating of tanks n such? I'm sure not it massive amounts...
Ducky1138 2 years ago
I got a head-ace. : P
Though it was very educational.
househaila 2 years ago
I doubt the Bottom bit because that is slightly like bio warfare, and as the UN made nuclear ballistics illegal because of . However the depleted 'Uranium Bolts' radiation is extremely small or less harmful. Am I Right??? If not Sorry but You learn some think everyday
conochi1 2 years ago
My respects to your wisdom.
voon100 2 years ago
Where can I buy some Uranium 238?
(I'm sure in 1985 Uranium is available in every corner drugstore, but here in 1955 it's a little hard to come by. I'm sorry Maty, but I'm afraid you're stuck here)
250Trojan 2 years ago 2
This is really interesting. I was always good at Physics at school and always been interseted in Physics all my life, especially nuclear physics.
This makes me wish I had gone to Uni to study Nuclear Physics!
250Trojan 2 years ago
This was the most educative 8 minutes 36 seconds on Youtube.
andrewb58 2 years ago 71
do you need to enrich plutonium before it can give nuclear energy?
uut0 2 years ago
no, plutonium is made in breader reactors where the uranium 238 is bombarded with neutrons to form plutonium
asicys 2 years ago
Mucha quimica y ciencia pero no conoce que para el pelo hay una solucion que contiene llamada shampoo y sobre todo acondicionador. Lo podria usar en su pelo no?
Diego121084 2 years ago
Arrrgh, there is no such thing as centrifugal force!
SpellboundSolution 2 years ago
Sure there is. You can't find it just by looking at a newtonian diagram though, since it is of no real consequence. Think of centrifugal force as the impact force from the uranium unto the centrifuge wall, and you'll sort of see what I mean.
I agree though, he should've said centripetal force, it's the only thing that makes sense to use :).
drokles 2 years ago
Centrifugal force is an imagined effect though. If you go round a sharp corner in a car you feel the car pushing inwards towards you, we imagine that we are being pushed out because our brains tell us that that makes more sense.
SpellboundSolution 2 years ago
What about the spinning fairground ride where you are kept in position even when the cylinder is tipped at an angle?
whizzkid11k 2 years ago
Like I said that's an illusion. You are held in place, so to speak, because the fairground ride is pushing IN on you; your brain tells you you are being pushed out.
SpellboundSolution 2 years ago
But how does a solid object like that, that doesn't appear to warp or change it's shape, push in from every direction towards the center, above the source of the spinning (the motor/engine/whatever)?
whizzkid11k 2 years ago
Check out the Wikipedia article on centrifugal force; read fictitious centrifugal force. This is what youre referring to when talking about yourself being "pushed out" in a fairground ride.
SpellboundSolution 2 years ago
@SpellboundSolution But it's a real effect when it comes to materials of differing density. And if humans are of a certain mass then it will ahve an effect on us too. Or am I wrong?
2882890 2 years ago
Acceleration toward the centre leads to rotary motion - an object orbiting around a point at a constant linear velocity is accelerating inward, if the force was applied in the opposite direction the object would spin outwards.
Imagine you are moving along with this object: you will be pulled inwards due to your non-acceleration but it will FEEL like you are being pushed outward. That is the key point: it is an imagined force, not a physical force.
SpellboundSolution 2 years ago
This has been flagged as spam show
Nice hair dude!
vinizan 2 years ago
Bet he'll gonna get a Nobel-price for having more control over the universe than over his hair^^
Lolz, anyways, a nice and interesting vid^^
UrsusArctoz 2 years ago
You figure that U 235 would be more abundant because it requires fewer neutrons.
TheAtheistPaladin 2 years ago
fewer nuetrons is unstable because you are packing the protons closer together and they want to repel each other they have all the same charge. like two ends of a magnet repel each other. you can also have too many nuetrons but that doesn't not really apply to Uranium. 238 is more abundant mostly because it is more stable and is more easily formed due to its higher nuclear stability
kriegkatse 2 years ago
This comment has received too many negative votes show
There is no such thing as a centrifugal force.
sushicraver975 2 years ago
Comment removed
imover18gotityube 2 years ago
pretty sure he meant to say centripetal force...No need to be a dick head about it tho, im sure you know better.
fugehdehyou 2 years ago
No need to be hasty, I was just pointing out his error in speech.
sushicraver975 2 years ago
Would the output of power from a nuclear plant truely be worth the input of power it would take to enrich the uranium. It sure seems like it takes a lot of energy to do this.
sinnersavedbygrace7 2 years ago
Only if you measure the energy input. What you're not taking into account is the immense "stored" energy of the atom which is released in a reactor or weapon.
knowsnogravity 2 years ago 2
Well it apparently is since everyone's doing it. And the amount of energy is HUUUUGE. Imagine when we get fusion reactors going on. You could provide electricity to cities with just one plant.
fugehdehyou 2 years ago
lol HUUUUGE
firestorm2000 2 years ago
This comment has received too many negative votes show
The Department of Homeland security is gonna take this video down. Haha.
treboomboom 2 years ago
Can someone steal the depleted u238 and make a dirty bomb ?
It wouldbe just radioactive enough to cause terror among an uneducated public.
PrivateSlacker 2 years ago 2
@PrivateSlacker The radioactivity is too low but you would be able to intoxicate people. I guess they would die of liver failure and whatnot if they don't go to the hospital.
vmelkon 1 year ago
Damn I watched this hoping that I could enrich uranium at my backyard. Seems like it's impossible. :D
tiwunster 2 years ago
I wonder if this could work on a small scale. Rather than using a battery of centrifuged, only 1 or 2 are used, but with buffer tanks between the steps.
I know the output would only be a fraction of what large scale manufacturing can produce, but for research purposes, very little of the element is usually needed.
But's this is just me trying to be an armchair engineer. I'm obviously skipping some steps.
acronus 2 years ago
I learned all about this in my high school chemistry class, as I grew up very close to the Goodyear Uranium Enrichment Plant in southern Ohio. Gaseous diffusion operations were shut down a few years ago, and now they've begun using centrifuge technology to enrich uranium to a non-weapons grade assay.
hagiadzo 2 years ago
people can be scared of knowledge like this lol
lilmarine93 2 years ago
Excellent as usual.
Uberjoe19 2 years ago
Bravo. Wonderful video! I absolutely love watching these!!!
BurningFeetMan 2 years ago 2
Why enrich uranium when you can get depleted uranium and produce small amounts of plutonium? Add a neutron to U-238 to get U-239 decays to Np-239 which decays to Pu-239, weapons grade plutonium.
CATSCEO 2 years ago
Plutonium is mad radioactive
TheLaxOne 2 years ago
sure, so where can I buy neutrons? I couldnt find any on ebay.
JupiterRoom 2 years ago
Bombard Berylium with high energy alpha radation. Use polonium-210 or americium-241
CATSCEO 2 years ago
If people like the Professor and his colleagues were on TV more often than some of the 'science journalists', the public would be much better informed about these sort of issues.
Please keep up the good work!
CMMarkH 2 years ago 4
fascinating yet succinct explanation Prof.Glad people can't make it in their bedrooms! Seriously though, great tutorial.. wish my Chem teachers back in the day could communicate/explain as well as you!
sussexpenguin 2 years ago
Thanks for all the videos you've made for us prof.
I greatly enjoy them and find them so informative!
Much love from California, US.
TheRomans 2 years ago
You've all summed up an entire physics ad chemistry semester in under 9 minutes.
trustthewater 2 years ago
Great video but I'd like to add that there's no such thing as centrifugal force. Rather the lack of centripetal force. Take for example a car taking a corner. Its contents are travelling in a straight line but as the car turns the contents are shifted to the side because they are continuing in the same direction whereas the car changes direction. The lack of centripetal force causes the object to slide. I love Chemistry but my Physics professor has drilled this into my mind
Thanks for the video
maxpowerallstar 2 years ago
Strange. I had always assumed radioactive enrichment was a process of converting more stable isotopes into less stable ones... not throwing out the stable isotopes.
Kargoneth 2 years ago
... similar to processes in a breeder reactor. I find the word 'enriched' deceptive. It should have been 'isotope separation'.
Kargoneth 2 years ago
"to process so as to add or increase the proportion of a desirable ingredient " is one definition of enrich.
However, I don't know if the definition came first or the process being mislabled made a new use of the word.
700bees 2 years ago
loveee these videos! :)
laurasayshello 2 years ago
As always, wonderful video. Thank you for posting.
00a00s00d00f00 2 years ago
Thanks again
gvi341984 2 years ago
You guys are great! Awesome video.
DuskY1991 2 years ago
very interesting, thanks ;o
wovenv2 2 years ago
Wonderful explanation!
xja85mac 2 years ago 3
man this is good stuff!! i really enjoy these videos. just a thought... maybe if he filmed in front of a green screen.. he could make the background look as if he was giving this lecture from frankenstein laboratory hehe.. now that would be pretty cool
diamonddill 2 years ago
da professa
mcgmode 2 years ago 3
haha, this fucking guy
maulcs 2 years ago
YES! A new PTOV video. Made my day.
AlexGuitar8 2 years ago 2
Yeah same here. It's definitely one of the best YouTube video series out there.
Truthiness231 2 years ago 6
I agree. I've never really been a fan of chemistry but these guys have really turned me on to it. Really great videos.
AlexGuitar8 2 years ago 4
@Truthiness231: We totally agree!
periodicvideos 2 years ago
Is there an upper limit to how pure centrifuge enrichment can can make U235? Conceptually, it seems like, if you just kept cascading it through your systems, you could wind up with pure U235 (well, UF6 where the Uranium is 100% U235).
tybo09 2 years ago
Eventually it becomes uneconomical to do so, though. Diminishing returns and all that good stuff.
TheStephenation 2 years ago
what are the odds of a natural event of uranium excited, like explosion? or radioactive poison? what is radioactive poison, and where does it hang out? great vid
boxer3main 2 years ago
Nice explanation
cyberprodigy 2 years ago
Rats, my plans for world domination are foiled again!
sypher113 2 years ago
plastic bottle collection?
jnthnbush 2 years ago
This comment has received too many negative votes show
this guy probably spends an hour in the morning doing his hair like that, fag!
jnthnbush 2 years ago