When you do nuclear science CHECK YO STAGIN!

@alexlandherr

6 жыл бұрын

Ave Vovus! You’re lucky that joke didn’t bomb...

@TheJimtanker

6 жыл бұрын

And make sure you buy the t-shirt!

@togamid

6 жыл бұрын

A missile with a nuclear warhead doesn't need any parachutes, so there's no problem xD Yes, I know that this wasn't your point.

@brantwedel

6 жыл бұрын

@togamid if you stage the detonation, before the launch ... BIG PROBLEM XD

@needsmoreboosters4264

6 жыл бұрын

togamid Some air drop bombs have chutes.

My favourite factoid about the Trinity test is that after the war they released photos of the test...which included a time stamp and distance scale. A physicist named G.I. Taylor (who had worked on the manhatten project) used those images, with a spot of dimensional analysis, and published papers wherein he calculated (to a remarkable degree of accuracy) what the explosive yield of the device was. He got in a little bit of trouble for this, as the number he'd worked out was very classified...but when it was discovered that he was able to work this out from information that was in the public domain, he was let off, and an important lesson was learnt about never underestimating what a clever person will do with information.

@NeverTalkToCops1

6 жыл бұрын

A scientist (It may have been Fermi) calculated the Trinity yield by throwing bits off paper into the air, and measuring how far they traveled as the shock wave passed. I think this method predicted a yield of 20 kilotons.

@rdfox76

6 жыл бұрын

And said G.I., Ted Taylor, went on to be one of our preeminent nuclear weapons designers postwar.

@rdfox76

6 жыл бұрын

In later years, we used a surprisingly simple method to get a first-order approximation of a weapon's actual yield during a test. Remember those smoke trails you always see next to the mushroom cloud? Those were left by rockets, and were at known points perpendicular to the camera's line of sight. By watching high-speed footage of the test frame-by-frame, the visible disruption of those smoke trails from atmospheric lensing would allow them to track the passage of the shock front... and by calculating the speed at which it was going (from distance between trails and number of frames it took to go that distance), they could get a fairly close estimate of how big a boom they actually got.

@zhuzzir

4 жыл бұрын

@@rdfox76 at last... I always wonder whats that trail surrounding during early parts of explosion mushroom... Thanks for the info!

@alt8791

3 жыл бұрын

This lesson was promptly forgotten by President Trump when he tweeted out classified images of an Iranian launch failure taken by a KH-11 satellite. Scott’s video on the subject uses the publicly known information of the KH-11’s imaging sensor to determine the exact orbit of the spacecraft, allowing the tracking number of that specific satellite to be determined.

Is part 5 going to be about how to remove yourself from government-watchlists ?

@90hijacked

6 жыл бұрын

you mean Google's 'analytic' system :-)

@MrJest2

6 жыл бұрын

Nah; this is all "open source" stuff at this point. The only limiting factor in making nuclear weapons is not information; it's acquiring or creating the materials. The "information" cat got out of the bag 60-odd years ago, and there's no putting it back. What he's discussing is stuff that kids learn in college these days, at least those who take nuclear physics courses.

@JamesBalazs

6 жыл бұрын

Nah, it's stuff kids learn in middle school during GCSE's between 14 and 16 years old, and it's mandatory. Really simple stuff :P

@NovemberOrWhatever

6 жыл бұрын

proof of open-source-ness: en.wikipedia.org/wiki/Nuclear_weapon_design

@highjinx68

6 жыл бұрын

@jesper O lmao

yessssss!! really enjoy thees videos!

@alphaadhito

6 жыл бұрын

Cody'sLab No, just no! Don't built atom bombs on your background please 😂

@Renegade30

6 жыл бұрын

Hi I'm Cody and welcome to my Manhattan project!

@ELYESSS

6 жыл бұрын

Do you have some plutonium on your collection?

@USWaterRockets

6 жыл бұрын

When Scott was showing the flowchart for the process for making Plutonium in a reactor, it reminded me of your channel, Cody... and here you are! What a coincidence!

@1320crusier

6 жыл бұрын

cue articles about the "Nuclear Boyscout"

Premature detonation while the core is not even fully inserted. I hate when that happens...

@dzejrid

6 жыл бұрын

I see what you did there...

@sylak2112

5 жыл бұрын

@@dzejrid oh man... you win the internet

@redvine1105

5 жыл бұрын

That’s why you need a fast insertion time

@NapoleonGelignite

5 жыл бұрын

Just think about boron on a cold day.

@zakeraka6547

5 жыл бұрын

Shorter gun barrels increases chances of premature detonation? damn...

I'll fill in what Scott left out after the 8 min mark. Detonation wave profiles take the form of a leading edge pressure spike followed by a region of rarefaction. The shock reflection that would occur at the Al/U interface would produce a higher pressure behind the shock front, minimising the rarefaction that occurred behind the shock front, thus maintaining pressure for a good distance behind it, and thus allowing for the entirety of the core to be compressed to a higher degree, rather than the material that was just behind the shock front at that period of time.

The engineers involved absolutely earned their slide-rules.

@km5405

6 жыл бұрын

yeah ... think of it what you want but some technology had to be invented from scratch to make the manhattan project a reality and others were advanced by decades.

@InXLsisDeo

5 жыл бұрын

In the video at the end, you can see a few of these engineers (actually nuclear scientists): Feynman on the left (no shirt, slight belly), Oppenheimer (slim man with the hat) who was the director of the program. The others I didn't recognize. I wonder who the guy with a pen on his ear is.

@dale116dot7

Жыл бұрын

@@InXLsisDeo Looks like that might be Louis Slotin on the left, leaning into the bomb. Maybe Harry Daghlian Jr on the right?

I still say Scott can be a bond villian Fly safe Mr bond.... hahahaha

@TheErilaz

6 жыл бұрын

pyro lopez Ahahahahahaaa hahaha!

@LoPhatKao

6 жыл бұрын

I could easily see Scott as Ernst Blofeld

Sitting at the fireplace, having a coffee, feeding my brain watching your video, a saturday morning can't start better. ☕️

You have to cover the accidents that occurred with the demon core.

@oobermate

6 жыл бұрын

Taleric1 "Oh, I'll just hold these two halves of a reflector over a plutonium core juuuuust barely apart with a screwdriver.... *screwdriver slips and both halves cover the core* Oh damn... *radiation intensifies* Hm, well, fuck."

@moosemaimer

6 жыл бұрын

"Everyone mark where you are standing, so we can calibrate your radiation dose vs. how much of your DNA falls apart."

@alphaadhito

6 жыл бұрын

Long Dong Silver I wonder about the safety of standard operational procedure at that time 😓

@Penningtontj

6 жыл бұрын

There wasn't a standard operating procedure at the time, but safety was an issue (since there were two instances where people screwing around with the Demon Core lead to fatalities.

@oobermate

6 жыл бұрын

Penningtontj It was definitely a new field of study without a doubt. What a shitty way to go...

Explosive lenses are such a cool idea! Great video :)

@EtzEchad

6 жыл бұрын

thedreadnote Next they are going to come up with the explosive telescope.

@VickiBee

6 жыл бұрын

Really? I don't understand any of them. And I lived with a scientist who did his doctoral thesis on the third way they make these. They use photon energy; he did his thesis on photons. That's all I know. I couldn't even read the first page of his paper, which was over 200 pages long. I didn't understand the first page. Math & Science were my weakest subjects. Language was supposed to be my strength but you'd never guess it now. I've been trying to learn German for 5 months. Not going well at all.

@Bizzon666

5 жыл бұрын

X-ray photons are used to detonate secondary fusion stage in thermonuclear (hydrogen) bombs! Your roommate could have been the hydrogen bomb scientist, really... Of course no lamp can do it, those photons are produced by regular (or boosted) fission nuclear bomb=)

@Dragonblaster1

4 жыл бұрын

An underappreciated British contribution to the Manhattan Project, quite apart from the Frisch/Peierls Memorandum that kicked the whole thing off. The American experimenters were getting nowhere with implosion until a) Jeff Taylor showed them the way they were going wouldn't work and b) James Tuck told them about his work with shaped charges.

@RiskyVentureMinerals

Жыл бұрын

That part totally blew my mind, such a simple yet smart solution.

Scott, I'm really enjoying these Going Nuclear videos so far but could you please skip ahead to the DIY episodes? Sincerely, Kim

@besserwisser4055

5 жыл бұрын

kek also, 42nd like. 101010

@noahhastings6145

4 жыл бұрын

I'm on to you Kim Possible

@paladin0654

Жыл бұрын

@@noahhastings6145 No secrets here.

“Shock dynamics are incredibly complex and worth videos of their own.” Please?

@Stoney3K

6 жыл бұрын

That's his way of saying "Sorry, but need-to-know basis."

@Evan_Bell

3 жыл бұрын

The information is available online. Ask any questions you have.

@fightingforcatalonia

3 жыл бұрын

@@Evan_Bell Can u provide me the links. Tnks Evan

@Evan_Bell

3 жыл бұрын

@@fightingforcatalonia To what? Just Google it.

I've been reading Manhattan project books on and off for years and each time I learn something new.

Plutonium - not only highly radioactive but phenomenally toxic as well. Lovely stuff.

@maksphoto78

4 жыл бұрын

Try Polonium. Just 1 gram would kill 10 million people.

We as a species didn't know about radioactivity until the late 1800's. not even half a century later we figured all this out. Will always boggle my mind. Smart people? Alien tech? Amazing stuff that 99.9% of the population doesn't think about.. Amazing explanation/simplification Mr. Manely!

I worked on submarine nuclear reactors when I was in the US navy and these videos cover most of the material taught pretty well, I’d love to see many more videos like this, I would definitely watch a series about shock dynamics

@Ansset0

5 ай бұрын

That's not a glowing recommendation 😁🤣

Thanks, chilling stuff. I grew up in the cold war and we were warned about 6 minutes before explosion. Hope those days are gone forever. Thanks for your very professional presentation.

It´s hard to wait till you get to Castle Bravo and fusion. I love this series. Do you already know where you will stop are do you go up to the point where you´ll talk about Tokamaks Stellators and the National Ignition Facility?

@scottmanley

6 жыл бұрын

I know that I need at least 3 more parts covering 1) Improving implosion devices (hollow cores, fission boosting, etc) 2) Thermonuclear 3) Enriching Uranium & Manufacturing Plutonium.

@monkingflame9493

6 жыл бұрын

Sounds cool. maybe if yoou have time and Ask nice the people at the NIF may give you a tour for the Video. but these three Parts are already a good thing to look foward to. But it´s always a problem of time and Space and all that inside a curvey Spacetime. Sometimes I wish we would have Tardisses or what ever the plural of TARDIS is.

@catfish552

6 жыл бұрын

Yesss, enrichment and production. Looking forward to that. The scale of those operations is absolutely mind boggling.

@km5405

6 жыл бұрын

and after that there is gen 4 nuclear weapons too : antimatter initiated fusion weapons; which can theoretically be minimized to a *much* smaller scale .

@Stoney3K

6 жыл бұрын

And while we're at it, you can go off a tangent and use 'Plutonium production' as a subject to cover nuclear power reactors, the various types of that, notable incidents, and planned future nuclear power generation?

This is a fascinating series Scott! Thanks so much for making these. Can't wait for next one!

I've watched/read a lot of stuff about the Manhattan project and nuclear bombs/energy, and so far there have been new info for me in each of your videos. I love how you explain the details instead of just glancing over them.

@charleslambert3368

6 жыл бұрын

Have you read the Nuclearsecrecy blog, by the creator of Nukemap? That goes into a lot more detail than anything else I have read. Stuff like how a lot of the energy of an H bomb actually comes from fission.

@Evan_Bell

3 жыл бұрын

@@charleslambert3368 That's very basic information available on wikipedia..

@rickevans3959

3 жыл бұрын

Reactors make plutonium as a by product the a goal for plutonium is more cheaper easier bombs that is the point of of going ror plutonium. Enriched uranium even at low none weapons grade is a problem because with that you can make reactors and the reactors will make your easy bomb material plutonium the ignition timing for the explosives is tricky but only down to nanosecond tolerances easily within the capability of switching diode available for purchase through digikey not that big a deal to set up if you have a 100 mhz scope and can read the graticule.

@rickevans3959

3 жыл бұрын

The smart guys were the ones that made the kriton ignitors

@Ansset0

5 ай бұрын

What have you read or watched? We're you sober? We're there a lot of plush ponies? You won't find physics in a happy meal 🤣

These just get better and better, Scott! Thank you!

Excellent Video! I appreciate you taking the time to educate us on this matter. This also puts into perspective how intelligent the people involved in the Manhattan project were.

The more details I learn about nuclear weapons development, the more impressed I am about the speed at which they were able to create them.

Early on in the project, Fermi's joke/slight speculation about the bomb possibly igniting the atmosphere was a serious concern. They did a lot of calculations on that and concluded it was PROBABLY not possible. Nobody was 100% certain going in to the Trinity test, just mostly pretty sure, maybe 99% it wasn't going to be a thing.

Hey dude, thank you for being my favorite KZread channel and always putting out quality content.

The entire 20th century is truly a technological golden age. The rate at which we progressed from crude planes that flew a few hundred yards to ubiquitous home computers and thousands of artificial satellites is staggering. Player pianos to 3D accelerated video games.

@scottmanley

6 жыл бұрын

+Sam Harkins but let’s be clear, Player Pianos are amazing, and in fact better than many video games.

@dzejrid

6 жыл бұрын

and yet the amount of people the think Earth is flat grows...

@Skyhawk1998

6 жыл бұрын

The two horrific world wars and the tense stand-off between two nations that could have ended life as we knew it likely helped accelerate that, somewhat.

I can't thumb you enough for these videos Scott, well done

Well presented! Looking forward to the next one in the series.

Great videos. You're doing an impressive job explaining a lot of these complex technical concepts and making them understandable for most folks. Looking forward to the rest of the series. If you're feeling really confident at explaining difficult to comprehend subjects, how about one on how anyone can think MAD is such a great idea, which is inexplicable to me and a lot of others who think it's simply insane.

This series is great!

Such in depth great videos Scott! Thank you!

Hey Scott this series is awesome! Thanks for making it.

Fantastic video, crazy background info I did not know before!

Love these science/history lessons. Keep 'em coming!

Thanks Scott! You're a great lecturer!

Scott: Thanks for these videos, I really enjoy your content - keep up the good work.

Learning lots of details General Groves would spin about. Really helping my hobby project. Thanks!

This is really fantastic content, thanks Scott !

Thank you for the detailed explanation. I've never heard a better one.

Congrats on reaching the magic million Scott. Love your work! 😊👍

Excellent video with great detail all the way through. I have to say, this is my favorite nerd-fest channel for science related topics. I have been subbed for years now as I remember when your vid popped up on your trek to Oregon for the 2017 eclipse. Funny thing is I invited my wife and friends to accompany me on that "Once in a lifetime chance" to simply drive to where the total eclipse will happen, but no one understood how cool this was going to be. In my case I drove from Victoria, BC, to Madras Oregon and I ended up with my younger brother joining me for that trip as he knew what this really was. I tried to explain to my friends that people travel all around the world to witness this. I was talking about going camping over a long weekend.

Scott's outro music always gets my attention; in any mood, I await the almost spiritual awe I feel at the boogle-blong just before it cuts off.

Time drags between these videos. Keep 'em coming!

Hi Scott, Longtime KSP watcher here. I want to say you'r HSB t-shirt is great. When I lived in SF I loved that festival. Keep up the great work and hope to see you in GGP some day!

This series is right up there with your What Is Rocket Fuel? video. Love them :]

Excellent show.

Favorite series on youtube right now!

After 4 years, a question I've had about why gun type isn't more widespread today is finally answered, and with 2 good reasons instead of 1 half-arsed answer. Thank you very much Scott!

@scottmanley

6 жыл бұрын

+Stretchwings that’s exactly what I was hoping to do with this series.

I see I've made the YT algo nuke-crazy in 2023 :D ... happy to see these Manley classics again!

Great video! I really enjoyed watching it!

Amazing stuff. The creepy, subtle music is perfect for this topic.

You're on a list Scott, you're on a list.

You should rename this video "The gadget or the soccer ball of DOOM!"

Excellent video on going nuclear, would love to see more. Everything you wanted to know in four parts. Learned a tremendous lot I did not know awesome thanks great series

Trinity and Beyond the Atomic bomb movie, is one of my favorite documentaries.

The implosion reminds me of neutron star formation. A huge collapse crushing the center down with huge pressure. Of course, implosion only crushes the pit down to about half it size vs neutron stars whose collapse crushes the stars core down ~idk ...10,000 times as the electron degeneracy pressure is overcome and atoms collapse into just the nucleus ...or neutrons. Love your video's Scott !

Really enjoying this series.

Hi Scott, Thank you for being such a Great Teacher! I only studied naval reactors. Your explanations are easy to follow and my knowledge base was able to follow you. 👍

Science and history together are awesome.

I'm am active subscriber of yours, Scott, but I didn't even know this was your video until the "Hullo!" Always a pleasant surprise. I guess it stands to reason that if somebody is into rockets they will be into nuclear weaponry as well. Gotta love those Rayleigh-Taylor instabilities.

I love the way you expect everyone is following along! In this episode I was fascinated to learn about the U238 tamper. It's amazing to think that U238 actually accounted for as much as 20% of the total yield of the Fat Man

@Evan_Bell

3 жыл бұрын

The actual value was 30.8%.

More and faster! Please and thank you.

These videos are really great.

I’ve been in the reactor build at Oak Ridge. The reactor and all the equipment needed to operate are still there.

Great video. *REMEMBER KIDS, IF YOU DESIGN SOMETHING TO MOVE YOU CAN ALSO DESIGN IT TO CARRY NUCLEAR WEAPONS*

@moosemaimer

6 жыл бұрын

METAL GEAR?!?

@user-mj5lc6up9q

6 жыл бұрын

moosemaimer actually i never playd metal gear i invented this sentence.

I'm a huge fan of this series!

First time I've seen photo of implosion test result on metal cylinder. Fascinating! After decades of gobbling up data on nuclear weapons, I must say you have demonstrated very fine knowledge of the process in an excellent video. I learned some new things here, like the complexity of the "urchin" neutron initiator. Now, how did they print such a modern looking, stick on label on that first 2.5 micro gram of PU239 sample? Do you have any photos of the inside of the gaseous diffusion plant at Oak Ridge, during its operation? I'm always stunned by what that plant accomplished, and how fast it was built. Thank you.

Great info, man!

8:18 Engineering shockwave interference patterns using pencil, paper, and slide-rules (not super-computers or even calculators) deserves it's own video. Damn, those were some geniuses. How did they even measure explosive speeds nearly 5 miles per second to the necessary accuracies needed without computers? As destructive (and controversial) as Hiroshima and Nagasaki were, no one can deny the shear brilliance of the human mind.

This is so interesting... Please go into more detail! :)

good stuff scott!!

Yes, just a few videos more and i can finally begin my world domin.. i mean world science... fair... project thing!

Is it Scott's head on the preview?

@zockertwins

6 жыл бұрын

of course it is

@xXx_SpaceAce_xXx

6 жыл бұрын

KKKKKKKKKKKKKKKKKKKKKKKKKKK

@casualbird7671

6 жыл бұрын

^v^

Mr. Manley, I gotta say I love the series.

i learn so much from your videos! amazing

Shaped Charges are the Coolest Thing I ever Learned About! Especially with the Copper Plate Penetrator. The Explosive Shock Wave propagates from Point of Ignition and when it reaches the Lens, it Focuses into a Point Source. This was used in the Oklahoma City Attack.

This april 1 I went to Trinity site as well as the large radio telescope array in New Mexico. Worth the visit. Only can go to trinity site twice a year so plan accordingly.

The cast of Galaxy Quest is coming to retrieve the Beryllium Sphere!

Great series Scott Manley. It's a terrible reality but intensely fascinating.

Yay for nuclear sciences!

Really appreciate your intelligent, concise, and engaging videos. Well done Mr Manley! For those who appreciate a good read and are interested in learning more about the history of nuclear weapons: The Manhattan Project by Richard Rhodes Dark Sun, again by Richard Rhodes Stalin And The Bomb by David Holloway US Nuclear Weapons: A secret History by Chuck Hansen (long out of print

Very well done 👍

Very interesting. I had already read quite a bit about the Manhattan project and yet I somehow managed to learn new stuff in this video. Could you please list your sources though? Apart from the Critical Assembly Simulator by Alex Wellerstein I've no idea where all the pictures and simuations come from.

We need more videos like this

I'm not going to question why my entire recommended list is full of radioactive material. This video was on the recommended list anyways so I might as well watch this.

Scott you should come up to eastern Washington and visit the Hanford site. You can go on a tour of B Reactor and visit LIGO.

Always amazes me how they were able to build something like this with the equipment they had. On another note I love your outro music (google Tigoolio - Fatality, it's on ccmixter for anyone who's interested)

Very interesting!

Wow much details in this. I'm first time hear about construction of the neutron generator in this video i was thinking that is classified information :D Great job Scott, fly safe or better fission safe :)

Good, it's very nicely explained

Fermi also suspected that the electromagnetic pulse from the Trinity explosion would destroy measuring instruments, so they were shielded. Despite the effort a significant number were destroyed. Someone must have been taking notes because it led to experiments like Starfish Prime, and the Soviet K bomb (EMP) test.

Getting closer to my life goals step by step. ):D

This is awesome.

Watching Oppenheimer the other day I thought it was funny how they placed the last section of explosive lens like it was made of styrofoam. They just picked it up and gently fitted it into the opening and let it down slowly with the tips of their fingers.

Great piece. Scott, did you know that the massive pressure, during an atmospheric detonation, centered on the pit is sufficient to create opaque air for a very short period until the explosion expands and releases light. Hence the double flash that satellite sensors look for.

6:19 Where did you get that picture from? I've always been curious as to how they were able to test the explosive lenses.

Looking forward to the next vid, presume you'll be going onto two-stage Teller-Ulam designs.

@scottmanley

6 жыл бұрын

+Electricfox gotta talk about some other improvements first

@Electricfox

6 жыл бұрын

Ah, boosted fission?

Oh, cool. One of my favorite novels is The Sum of All Fears by Tom Clancy. There's an entire chapter dedicated to a description of everything that happens inside a hydrogen bomb as it detonates. The one part that I never really understood was the bit about explosive lenses, but now it makes sense.

My face is up here, Scott!