Marie Curie and Spooky Rays: Crash Course History of Science #31

[@wesleyrm76]

Marie almost didn't win that first Nobel Prize, but her husband refused to accept it if she wasn't included. What a man. Also, she actually had a pretty long life for those days. He was the one who died young, due to a carriage accident.

[@ThanhPham-gy5xh]

No one asked you

[@Fia-ps6ur]

Neal Shriyan Don’t be so mean She just informed us more fact. If you too lazy to read, go away.

[@surfersoldierforchrist5928]

Yeah Neal

[@BranchEducation]

Marie Curie is one of the best of the best! First ever to win 2 Nobel Prizes- and especially crazy because they were in different fields: 1 in Physics and the other in Chemistry. This is a really great episode!!

[@keithdurant4570]

That woman's mind was awe inspiring. She had an unquenchable curiosity, an enormous intellect, and yet in time of war she invented medical devices not weapons with her experiments.

[@RangerRuby]

You get me! Marie Curie is kick-awesome!

[@globaldigitaldirectsubsidi4493]

+Branch Education and being disadvantaged as a woman. Einstein said that she was the only one truely imune to fame

[@DaDunge]

@@globaldigitaldirectsubsidi4493 Well that's reversed itself somewhat, today loads more people know her name than what she actually did, and she's also become a bit of a cliche as "the woman scientist".

[@Ugly_German_Truths]

But Branch.... Biology is the chemistry of lifeforms and Chemistry is the Physics of atomic elements... so EVERYTHING should be a nobel price of Physics. Even Medicine that got one instead of biology, but basically is the maintenance and repair of biological organisms... having even got kind of their own chemical branch with "pharmacy"... Physics is what helps us describe what happens from the nanoscale to the macroscales of Astrophysics and Maths is it's language.

[@LetsTakeWalk]

Pierre and Marie truly were a Nuclear Power couple.

[@louwop8008]

Lawrence Tider my bands on me dont lie

[@isaiahsmith3199]

yuuuuuuup

[@Viridian02]

ahahah

[@rdreher7380]

In Japanese X-rays are still often called "rentogen" レントゲン which comes from Röntgen. I think other languages use röntgen more commonly as well. I have a funny story about this. When my parents were visiting me in Japan from America, I took them to meet with a dear friend of mine, an old Grandmother who owns a toy store. My parents don't speak Japanese, and my friend doesn't speak English, so I would translate back and forth. At one point, my parents wanted to ask about what her son does. I translated and she answered, but I didn't quite understand at first because I wasn't familiar with the word "rentogen." However, my Dad recognized the word as "röntgen," not because he studied physics, but because he had visited Würzburg University, where Röntgen worked when he discovered X-rays. This bit of insight from my Dad helped us to understand that my friend's son is a radiologist.

[@Felishamois]

don't know about funny but that's a good story homie

[@DarkAngelEU]

@@Felishamois Funny can also mean "fun" but most peeps would just say it's fun rather than funny.

[@Oblivion4eg]

it seems like it's same also in Dutch, definitely is same in Russian, Ukrainian and Slovak languages

[@purportedly]

In Danish as well. Røntgenstråler (Röntgen rays).

[@namename1231]

I loved the video but as a disclaimer from a trained radiation worker: you stated that madam curie worked in a shed with no ventilation. The amount of ventilation you have on a substance that is decaying radioactive particles has no difference in the amount of radiation exposure that you receive. What really matters is the amount of shielding that you have between yourself and the source! Every material has what is called a tenth thickness. That is the amount of material it takes to reduce the amount of radiation you receive to a tenth of what you would receive as if you were right next to it. Had she been working behind lead, or water that would of made a difference. But unfortunately such things were Unknown at the time There are a few more things that go into the calculation of radiation exposure but I don’t want to bore everybody. Everything we know about radiation exposure can now be quantified today because of the work of madam curie and Wilhelm Roentgen. Thanks everybody!

[@garethdean6382]

Possibly, I mean there was radon involved, which is a sod, and made some volatile compounds. Plus the dust I imagine. I don't think ventilation would have fixed everything, but it couldn't have hurt. Actually, given the chemicals they were working with, I wouldn't have liked to breathe the air in that shed either. Also, tenth thickness? Surely a half thickness would have been more in line? I am disappointed, radiation science.

[@namename1231]

Gareth Dean You are right it is bad to inhale the dust of a source. Such a thing is called a internal dose. Which is only an issue if you are grinding or cutting or just plain swallowing a source. Also Uranium will decay into what is called radon daughters. It is an order less tasteless gas. Fun fact radon makes up a significant portion of your everyday background radiation exposure. Lastly using tenth thickness of materials and shielding I can indeed reduce the amount of radiation you receive by half! With enough lead I can reduce your dose to be less then background!

[@Kathy_Loves_Physics]

But they had to do a lot of chemical processes to isolate the radium which involved lots of noxious vapors. It was so bad that they had to experiment in the yard!

[@vigilantsycamore8750]

Yes, finally we get to Marie Skłodowska Curie! I'll be honest, she's probably my biggest scientific role model and the fact that she and Copernicus are both from my country is a point of patriotic pride for me.

[@scarletletter4900]

"The couple that sciences together, stays together." - Words to live by 💑⚗👩‍❤️‍👩⚗👨‍❤️‍👨

[@samiai8905]

'Galileo became a mathematician after accidently attending a geometry lecture." Dammn... I wish I could become a chemist after attending a chemistry lecture

[@garethdean6382]

Whatever you do, stay away from proctology conferences.

[@DarkAngelEU]

I became a photographer because my ex had broken up with me and I kept thinking about her camera instead of her.

[@samiai8905]

@@garethdean6382 *Me googling proctology* ... some people become heroes in wars, others in education, these guys though... they deserve a spot in history

[@Ugly_German_Truths]

+Samia Islam I'll root for you to get your chance at attending your accidental chemistry lecture... but don't then go and visit a drug den or you'll turn into the next Walter White...

[@BoleDaPole]

I became a gynecologist after losing my virginity and being absolutely enamoured with the vaginal structure and smell. After a while you can actually tell which women are healthy or not depending on the smell of thier vagina. Something a professor taught me that I will never forget, he said "the nose is just as an important tool in gynecology as the scalpel is to a surgeon".

[@sonicgoo1121]

In Dutch we still call them Röntgen rays.

[@TalathRhunen]

In German as well

[@magnuspeacock5857]

Cool

[@PatrickAllenNL]

I was about to comment this

[@hafizajiaziz8773]

So are we in Indonesia

[@lakrids-pibe]

Same in Denmark

[@masha8770]

Fun Fact about Mr Röntgen: x-rays are still known as "Röntgenstrahlung" in Germany and to x-ray someone is "jemanden zu röntgen".

[@eugeneanisko833]

Maleha The way how he pronounces “Roentgen” is hard to get used to.

[@masha8770]

@@eugeneanisko833 I've learned to give native english speakers slack for sounds that aren't common to them. In comparison, in Germany I have met linguistics students for English (both purely academic linguists or future teachers) not having mastered the "th" sounds... It's hard to master sounds you did not grow up producing without some in depth study...and apparently even then ^^;

[@eugeneanisko833]

Maleha I don’t expect him to start saying ‘ö’. But the soft ‘g’... Anyway, no big deal.

[@lakrids-pibe]

One, two, tree, four.... yeah I can't for the life of me get the "th" sounds correct

[@LePezzy66]

Same in The Netherlands

[@puuuuuuch]

In many languages x-rays are still called rentgen rays.

[@Gew219]

In most languages, actually. Just as most people around the world call a pineapple "ananas".

[@_Ocariao]

@@Gew219 not pineapple, neither anana, it's abacaxi

[@IAOIceland1984]

yeah, they're called röntgen-geislar in icelandic (geislar=rays)

[@RobynRLiden]

@@Gew219 Or a variation of milk.

[@5Andysalive]

All langauges probably that can handle a Ö.

[@AmbitiousLearnWithGeorge]

The life and achievements of Marie Sklodowska and their supportive relatioship with her husband Piere Curie serves me as a tremendous inspiration.

[@runsi174]

In Poland we say we are having a rentgen meaning having an x-ray

[@marikakamyshenko4587]

Aleksy Ruciński same in Russian☺️

[@BritishRulez]

"and yet ma dude's cardboard glowed.." 😂

[@Booksnynk]

I didn’t know how quickly I needed to click on this. Marie Curie is my science hero. I once did an essay on here when I was 9 years. And since that moment I am a fan

[@thesteadfastduelist6258]

*That's one smart family.*

[@kherichi]

"..what he called 'spooky rays'" Me: hehehe "...Just kidding." That's cold, Hank.

[@tobyhawkins]

9:09 you have 'neurons' written on the board instead of 'neutrons'. Small mistake aside, good video. :)

[@leptyga]

Sort of hilarious. I hope it was on porpoise!

[@TheRealE.B.]

This.

[@garethdean6382]

They were... thinking of physics?

[@jackcooper4998]

I don’t speak polish but I have friends who do and I’m pretty sure “Ł” is pronounced as a “w” sound in english, and the [W] character makes the “v” sound like in German

[@qzg7857]

You are right

[@shatha-u6q]

Who love crash course more than meeee?? Their channel is LITERALLY SPECIAL!

[@nestrior7733]

Fun fact on Röntgen: He wanted to call them X-Rays in Germany too. But the Kaiser was so hyped about it, that he named it Röntgen-Rays instead and that's what they are still called in Germany to this day. Röntgen even became the verb we use for it.

[@sophiah.9009]

I did a project on her two months ago! I absolutely love her and her history

[@benjaminmathieu16]

Thumbs up for Marie Curie 👍🏽

[@PatrickAllenNL]

The way he says Röntgen 😂

[@ObjectiveZoomer]

That's okay. I've heard plenty of Germans butchering English words/names

[@DaDunge]

@@ObjectiveZoomer Really? Most Germans these days are fairly good at english. While it's hard to find a single english speaker who gets names in other languages remotely right.

[@Alesij]

Yeah, how hard is to look up correct pronanciation when I do so kuch research for the video... Sad.

[@melonlord1414]

I mean, I understand that he can't say ö properly, because this sound doesn't exist in english. I too, bucher every th that I try to say in english. But the rest of the name was pronounced bad as well. Espessially the g

[@KathyTrithardt]

Who doesn't want to go to a flying university?

[@scarletletter4900]

I'm hoping it gets a mention in Super Science Friends

[@RangerRuby]

Answer: No One!

[@isaiahsmith3199]

Sounds like sky high 2.0 meets womens suffrage

[@WindFireAllThatKindOfThing]

I googled it. It did not make it off the ground, and in point of fact went _underground_ I was sad

[@KathyTrithardt]

@@WindFireAllThatKindOfThing I already knew it was a misnomer but this comment made my day.

[@Dreamwave1996]

1. Thought bubble wrote neuron, not neutron on the black board haha 2. I thoroughly enjoyed this video. I'm anticipating and am excited for a video on computer science, and specifically Alan Turing. Marie Curie and Alan Turing are just gods for how they changed the world

[@elizabethstranger3122]

I love your videos, Crash Course! I'm excited for the next one - Einstein is one of my favourites! This video was great as well. Marie Curie is one of the absolute most noteworthy people In the history of science (though there are many noteworthy people). Knowing that so many people worked so hard and sometimes basically sacrificed their own lives for the sake of the development of science, is something that I feel extremely grateful for. I think we should all be thankful to all those people who came before us, who worked and fought to make this world a better place for everyone.

[@bjornneuhauser6636]

Here in Scandinavia we still call them Röntgen rays :)

[@lynettemojica6503]

"She wore the brain pants" clearly. 😆

[@richardrobertson1331]

Great presentation! Love your enthusiasm for science. Thanks to all the team.

[@eugeneanisko833]

“In his day”? That’s what they call them in Russian and German. ... What a weird way to pronounce Roentgen’s last name.

[@cartoonmania2408]

I searched the flying university when hank said to google it and it’s actually a thing. Turns out Marie curie was one of their most famous alumni

[@darrenmarcum5866]

9:10 Neurons? Oops Mr. T got left out again lol..... Seriously though, Mr. Green, you are an inspiration and an idol. Thank you for all of your wonderful videos!

[@kylejohnson3233]

New favorite Crash Course series

[@milandjuric8043]

In Eastern Europe literature Rontgen rays and x-rays are used interchangeably to this day, and common people know it as Rontgen rays.

[@astahelgadottir8747]

Marie Curie gets her own episode! Though it doesn't make up for the lack of women in History of Science so far it's still a nice consolation. This woman is an inspiration to us all.

[@fennk5386]

Three seperate Nobel Prizes in one family? Thats...spooky.

[@Khaiell]

Maria got 2, which makes it 4. There was even a 5th one sort of. Ève Curie was heavily involved with UNICEF when they got the Peace Prize.

[@Cythil]

@@Khaiell Interesting. Did not know that. I knew about the 4 other prizes but not about Ève Curie being involved with UNICEF when they got the Peace Prize.

[@DaDunge]

@@Khaiell No still just three, the one Pierre got was shared with Marie, same nobel price.

[@mariahsbelovedlamb6443]

Marie Curie is my inspiration

[@DragoniteSpam]

I think I've seen a lot of other people say this, but usually when people talk about history it's about wars and killing people and less about how much we've learned about the world. In other words, this is my favorite Crash Course and I'll be really sad when it ends =/

[@ExitusGSZ]

"In his day". In German, we still call them Röntgenstrahlen (Rontgen rays).

[@qzg7857]

I belive it is x-ray only in English lookig at the comments

[@Azoryo]

Here in germen we still call them rÖntgen rays (RÖntgenstrahlen). In fact the entire procedure is called to get rÖntged. Notice the umlaut. This is not an o. It's pronounced like the i in girl.

[@Artur_M.]

It's similar here in the homeland of Skłodowska-Curie. We call it "rentgen" or "promienie rentgenowskie".

[@belindaweber7999]

This is sooooo awesome! Reminds me of the Great Minds series from yonks ago. Thanks CC team

[@tabethahowell5859]

Absolutely loved this video

[@Bfritz0815]

Fun fact for minute 3:01 : In German the X-Ray is still called "Röntgen-Strahlung" (Röntgen Radiation) and the Rays are called "Röntgen Strahlen" (Röntgen Rays)

[@mirir5475]

Hank's nerd crush on Marie Curie is so obvious every time he talks about her.

[@kimberlymartinez4067]

First female to ever win nobles in multiple sciences! "The couple that sciences together, stays together" I love this!

[@ianrbuck]

HANK, you can't SAY THINGS like that on an educational channel! I was totally prepared to believe the bit about Spooky Rays.

[@unleashingpotential-psycho9433]

Marie Curie is awesome.

[@MntRprznt]

Who's that? You mean Maria Skłodowska-Curie?

[@Donderu]

2:52 actually, in northern europe x rays are still called Röntgen

[@LeeNTien]

X-rays are still named after Rontgen in Russia, with only a minor change - they call then "rentgen" - the G is hard, as in "global".

[@mithrae4525]

I was expecting to hear about Mendeleev all the way back in #18 'The New Chemistry.' Finally thought that if he's not in this episode he won't be in any of 'em. And I guess he was... kind of... Feels like a bit of an oversight in an otherwise awesome series!

[@SomethingStrange1579]

Wishing everyone a beautiful and safe holiday. Merry christmas

[@Viridian02]

Man the way John says things, it's like people be divin' into stuff left and right 🤣

[@idndyzgaming]

In Indonesia we still call the operation "di-rontgen" to let us see our bones (Rontgen-ed).

[@jakubabramski6378]

Remember her full name was Curie-Skłodowska

[@JakubW.]

Skłodowska-Curie

[@xmagic2323]

Oh I love Marie curie, and she’s represented in the super science friends!

[@zachydrogeo]

Literally just in time for my physics final! Thank you!

[@bpsarma]

Can’t wait for the next one!

[@ChessMasteryOfficial]

*Life is much more fun if you live it in the spirit of play and collaboration, working with instead of against others...*

[@ScienceCommunicator2001]

"Nothing is to be feared, it is only to be understood. Now is the time to understand more, so that we may fear less."_ Madame Curie

[@hominid92]

Fun fact, X-rays are still called Röntgen in Finnish.

[@lindavilmaole5003]

When women were not given the scientific stage to romp on, it is highly inspiring to have a gifted woman to descend and did her best to get all the prizes at stake! Marie Currie is not rich, not emotionally insecure, and is basically focused on her RADIATING carrier. She has no qualms of doing her own thing her own way: marriage in a secular way wearing her work clothes, doing her own study apart from her husband, caring for her child...while discovering the sources that made her carrier radiate gloriously.. Together she shines with Roentgen and Becquerel, but Marie Currie is a female giant in the field of Physics shines more brightly!.

[@skylight6820]

The woman who discovered radioactivity, together with her husband Pierre, the radioactive elements polonium and radium, while working with the mineral pitchblende. She also championed the development of X-rays after Pierre's death. What a inspiring woman:) She was the first person ever to receive two Nobel Prizes, the first one in 1903 in physics, shared with Pierre Curie (her husband) and Henri Becquerel for the discovery of the phenomenon of radioactivity and the second one in 1911 in chemistry for the discovery of the radioactive elements. The one and only Mrs. Marie Sklodowska Curie. Accordingly her contributions to the study of radium and radiation in the field of the modern technology nowadays, it can be used this instrumental to the future development of the atomic bomb. Very inspiring woman, she is one of the aspirant in the contribution of the science and technologies nowadays for discovering this type of instrument. Besides, through watching this video, something on my mind flex. the thought that "I do believe that if we can get what we want if somebody support us and push up with what we wanted to get:) Inshaa Allah." Thank you ma'am for letting us watched this crashcourse!

[@nashimaguinaresmail3765]

One of my favorite episode so far because it highlights the story of Marie Curie, an empowered women of Physics and Chemistry. Her story was inspiring because she proved gender is not an issue when we talked about science, both men and women are gifted with such brillance and intelligence. So her success is an advocacy for all the women who brought a major contribution to scientific knowledge. I remember the movie Hidden Figures about black female mathematicians who worked at NASA during the space race. Katherine Johnson who fought for herself was remarkable in this film. These are just very few to mention many women who's victory inspored many aspiring women who's fascination about science is undeniably amazing.

[@ainiebaldecasa8800]

I was inspired in the video especially with Marie Curie. She was the first woman to win one, the first person to win two of them, the only woman and one of only four people to win in two different fields. And she remains the only person ever to win Nobels in multiple natural sciences. In fact, being a woman is not the hindrance in contributing in the society just like Gina Lopez even she died she remains her legacy of what she made to the people because of her passion and determination to serve and help people. For me, it is a challenge to the woman to really excel in different fields because now a days woman started to make moves. Before they said that woman are weak but is not true because man and woman are the same but different skills. Every successful man there is a woman behind that success.

[@niajeon6107]

I've always admired Marie Curie since high school. She was the only woman scientist I knew who contributed to science, but it wasn't clear to me what she did or what her contribution was all about. And I'm delighted that this video educated me about her work together with her husband. I'm also impressed how their family won nobel prizes for their contribution. It's just saddening that her work killed her. But thanks to her and other scientists who worked about radiation or radioactivity, we now know the danger it possess and at the same time its usefullness to humans. They all deserved those awards that they got for dedicating their life and work to science and for the advancement of humanity.

[@jeamilainidal714]

This is girl poweeeeeer! How brilliant marie currie is. This video proves that girl has a power to do whatever they want to do, it is so amazing how radiation, radioactive was studied by her, it is very essential since it helps us but at the same time it also gaves dangers to us. No wonder why there are so many awards that given to her because of her works that are truly amazing and deserved to be awarded. How amazing also how her husband help through with it too. But all in all i love the idea how marie conquers or know this thing, This will be a great inspiration to all girls to keep shining in the field of science.

[@براہمداغ]

ok this episode was the best yet

[@argenti4research]

Very nice. Minor comment: the ł in Skłodowska should be read like a "U", so that the name sounds something like "squodovska".

[@BillySugger1965]

Excellent video yet again! Just a note on pronunciation. Germanic languages pronounce a G as a hard sound, as in golf, not a soft sound as in ginger. So Roentgen has a hard G sound, and Asperger rhymes with cheeseburger.

[@varana]

While generally true, there are exceptions, and the name (and, by now, noun and verb) R/röntgen can be one of them. Most people I know (in Germany) pronounce it "Röntchen" (or more precisely, in talking speed, "rönchn", i.e. they even skip the T).

[@superdau]

@@varana Those people that say "Röntchen" are most likely the same that pronounce China as "Schina", right? Shudders (as a German speaker)... It's Röntgen and Kina. ;)

[@varana]

@@superdau I come from an area that says "Shina" and live in an area where they pronounce it the wrong way. :D Not sure, to be honest; I'll have to specifically listen next time.

[@RabenFlueh]

(Fun Fact: Röntgen [ˈʁœntɡən] is still used as denomination in German speaking Regions - Röntgen-Strahlen - instead of the English one - X-Rays -)

[@dylankrejci9965]

from Jelle's marble runs. Thank you Hank for saving a great channel that got screwed by some strange KZbin algorithm

[@cherub3624]

Count Fritz Von Spooky is my next rpg character name...

[@rahuldevchauhan9451]

this video is one of the best video I have ever watched..... awesome channel.....🔮💯

[@armorsmith43]

I cannot say any more about this, but there is going to be a feature-length film about Marie Curie released in 2019 (probably...never trust project schedules).

[@WeaveDreamer]

3:05 THANKS DAD

[@doggonemess1]

This is about where I remember science instruction in high school stopping. It's terrifying that kids are only taught the sciences up to 100 years ago.

[@RonaiHenrik]

Please please please make a small crash course series about *horology* :)

[@yunhee93]

Very cool discovery

[@GLPentAxel]

In Norwegian, X-rays are still called Röntgen rays!

[@olaruud9366]

You mean Røntgen... ;)

[@GLPentAxel]

@@olaruud9366 Lol you right

[@NGBigfield]

In many places, Israel for example, X-Rays are still called Rentgen (Because no one can pronounce Röntgen)

[@jpoconnor2857]

Spooky affects of Curry. Big Boom

[@marlenanowak3252]

I'm so proud I am from Poland where she was born. I wish someday I could achieve as much as she did. And thank you for your pretty good pronunciation of polish names. I appreciate it.

[@shaolindreams]

Probably Poland's most celebrated Scientist with Copernicus a close second.

[@WindFireAllThatKindOfThing]

I find it disappointing that Madame Curie did not, in fact, run an old-timey French bordello.

[@frostfistace7813]

I love the slang in this episode

[@torbjornlekberg7756]

X-rays are still called röntgen here in Sweden.

[@DaDunge]

But pronounced Rönken.

[@Omega3131]

1:36 "Ront-jen"? It's Rent-gen.

[@klieu90210]

more like rùhrnt-gin

[@JohnBrockman]

During the video. him: "ront-jin" me: *twitch* "it's rent-gen" him: "ront-jin" me: *twitch* "it's rent-gen" him: "ront-jin" me: *twitch* "it's rent-gen" him: "ront-jin" me: *twitch* "it's rent-gen" him: "ront-jin" me: *twitch* "it's rent-gen"

[@creestee08]

Roentgen hete.

[@DarkAngelEU]

Röntgen, the ö is like the eu in Seurat, the -gen is like the -gen in Wittgenstein. It's really not that hard.

[@YouTubeallowedmynametobestolen]

"It's Rent-gen." "More like reont-gen" "more like rùhrnt-gin" "it's rent-gen" So here's the problem: In English, when a G is followed by an E, I, or Y, it is usually pronounced as a "soft" G--that is, like a J. Examples: gem, gender, generation, generic, gentleman, gesture, gin, giraffe, gist, gymnasium, gyrate, etc. But not always: give, get, gift, gigabyte, girl, bagel, begin, gynecologist. BTW, this is why there is a controversy over the pronunciation of "gif." So if you are going to correct Hank clearly and unambiguously, you have to stipulate which G sound is used in your well-intentioned but not-very-helpful explanations. And, for anyone who has found these comments interesting up to here (anyone? ... anyone at all?), this is also why some words have what might be called a "silent U": guess, guest, guilty, guitar, ... The U shows that, despite being followed by an E, I, or Y, the G represents the "hard G" sound.

[@geoffreywinn4031]

Cool video!

[@joschafinger126]

2:52 : In German, X-rays are still called "Röntgenstrahlen", or "Röntgen rays". The corresponding verb is "röntgen".

[@higuyz7872]

Hi i love your videos. Can you also make a playlist for calculus please and analytic geometry please!

[@MatanArie]

The current incarnation of the Crash Course History of Science playlist goes: ...#27, #28, #31. You need to fix the playlist to link to the two previous videos.

[@Ugly_German_Truths]

Might be a metajoke about not much maths in the history of science series? :D

[@kenlaverdi1581]

"my dude's cardboard glowed"

[@NaamahTheia]

Hi John! Are we ever going to get an episode on the wonderful and fascinating number zero? Great video series :)

[@maczetamaczeta189]

"I'm from Poland, it's really cold down there". Yeah, well Poland have the same climate as Germany or Paris-France.

[@BoleDaPole]

Yea no clue what that was all about.

[@MalakYahya-k7u]

Iam from Egypt ❤12 old, and lam moslem❤but you lovely❤thanks 🎉

[@arthurjulius7359]

X-rays are still named after Röntgen in Dutch!

[@jonspeck4736]

I think you guys should have a t- shirt of Marie Curie with the quote "She wore the brain pants" =^)

[@ultimateo621]

Spooky Rays is a much better name

[@avantika9719]

Love u hank . U r d best prof.

[@AlishN7]

Fun fact, in Russia where I'm from we still call x-ray "röntgen": рентген!

[@SunriseFireberry]

Spooky rays. Not to be confused with spooky action at a distance.

[@connorshea9085]

Small error at 9:05, blackboard says "neurons" instead of "neutrons."

[@HenningGu]

In Germany we still call X-rays Röntgen-Rays

[@spyan111]

They are still called röntgenstrålning in Swedish! :D