Radon - Periodic Table of Videos

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Here is a new video from us about Radon, including a look at a historic letter and a German cloud chamber!
With thanks to the Royal Society and GSI.
For those with annotations, the caption at the end for Radon should clearly be Rn, not Ra - sorry!
More chemistry at www.periodicvideos.com/
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And on Twitter at / periodicvideos
From the School of Chemistry at The University of Nottingham: www.nottingham.ac.uk/chemistry...
Periodic Videos films are by video journalist Brady Haran: www.bradyharan.com/
Brady's other channels include:
/ sixtysymbols (Physics and astronomy)
/ numberphile (Numbers and maths)
/ deepskyvideos (Space stuff)
/ nottinghamscience (Science and behind the scenes)
/ foodskey (Food science)
/ backstagescience (Big science facilities)
/ favscientist (Favourite scientists)
/ bibledex (Academic look at the Bible)
/ wordsoftheworld (Modern language and culture)
/ philosophyfile (Philosophy stuff)

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Опубликовано:

26 июн 2024

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Комментарии : 883

@amandaharris3283 9 лет назад

"hee hee! I've made my competitor feel uncomfortable....." Love the professor!

@hefhef54321 7 лет назад

@Antony Quigley She's quoting him...

@genericname3744 7 лет назад

Antony Quigley You Sir are a dumbass

@rebelrunner561 7 лет назад

pavan dutt COVFEFE

@aleph0x 5 лет назад

hee hee! top comment!

@marcusmckenzie3686 4 года назад

0 ok

@kapirock7903 4 года назад

The enthusiasm of the professor is contagious and makes fell happy. Thanks for the joy you share with us when making this videos! All the best!!

@ArnoldsDesign 8 лет назад

The cloud chamber was awesome.

@c4715 4 года назад

They have the same one in the physics departments at Liverpool uni and Jyväskylä uni if you're near either of those!

@peter4210 4 года назад

There is also a youtube chanels called cloudylabs and there is a video called Photoelectric Cloud Chamber where you can see different elements at work

@peter4210 4 года назад

There is also a youtube chanels called cloudylabs and there is a video called Photoelectric Cloud Chamber where you can see different elements at work

@peter4210 4 года назад

There is also a youtube chanels called cloudylabs and there is a video called Photoelectric Cloud Chamber where you can see different elements at work

@konigstigerhart455 4 года назад

I prefer the term Gas chamber

@mechareaper 11 лет назад

I'm struggling as a chemistry student. I'm very bad at physical chemistry, but Professor Poliakoff inspires me, and his commentary reminds me of why I became fascinated by chemistry in the first place.

@garywilson3042 5 лет назад

The professor is such a kind, compassionate man. We need more intelligent, happy and empathetic people in the world.

@syndicat4930 8 лет назад

This guy is called science

@12125512 8 лет назад

+Syndi Cat he is science

@1503nemanja 8 лет назад

Science is his middle name

@kingofgoldnessr9364 7 лет назад

Im Professor Science and this is my chem shop, I work here with my old man, and my son, big neil. Everything in here has a story and a price. One thing I learned after 10^9 years, you never know what is gonna radiate into cells.

@phamucnamphuong8939 7 лет назад

Anyone know his full name? Thanks

@RandomVideoGuy-qy8fu 7 лет назад

Sir Martyn Poliakoff

@oobermate 10 лет назад

The cloud chamber footage has a certain beauty to it that is very easy to get lost in.

@MinenArbeiterLP 4 года назад

What is beauty my friend

@drzecelectric4302 4 года назад

@@MinenArbeiterLP the cloud chamber

@MinenArbeiterLP 4 года назад

@@drzecelectric4302 what is beauty i mean what its

@marclarell 9 лет назад

Interestingly, when looking closer at the V shapes, one of the lines is shifted a little bit to the side, showing that the second particle is coming off a certain timeframe later.

@jaymalley906 9 лет назад

ArThorS MAGIC

@KarbineKyle 9 лет назад

Awesome video! Also, a great demonstration of half-lives at the end with the cloud chamber from the thorium-232 decay series. The Rn-220 nuclide has a half-life of approximately 55 seconds, emitting an alpha particle, becoming Po-216, also emitting an alpha particle, which has a half-life of 0.1 seconds, so they decay almost at the same time, so it looks like 2 alpha particles at the exact same time. If you look closely, you can see some take slightly longer. That's why half-life is used. One nuclide might decay at a certain point in time, while the other nuclide in a different point in time, even if the same parent nuclides are produced at the same time.

@powereln 8 лет назад

"hee-hee" I idolized this man, guys :D

@spudmckenzie4959 4 года назад

You dont anymore? What happened??

@primaryodors 2 года назад

The cloud chamber looks freaking amazing! I think if one has an emotional response, it is a sign of caring a lot about the subject matter, which means the study is a passion and not just a job. I agree that lends itself much better to breakthroughs and such!

@AeronN7 10 лет назад

hee hee!

@Tonjevic 11 лет назад

Gosh, that cloud chamber is incredible. I had always wanted to see video footage of one, and now that I've seen it, it's better than I ever imagined.

@scowell 6 месяцев назад

There's video from inside a Fukushima meltdown where there's a natural cloud chamber, taken by a robot... the sensor in the camera is sparkling from the radiation as well. Not a place to be!

@MilanTheAngel 8 лет назад

1:23 lol Polonium is shaped like Poland

@bernardputersznit64 3 года назад

I just adore the cloud chamber demo - Thanks Professor!

@kiwibeca Год назад

New Zealander here. So, so proud of Lord Rutherford and his work. He graces our $100 note, his hometown of Nelson has a "Rutherford St" (As well as a "Trafalgar St"), he was named at number 1 on the list of top 100 NZers; (Suffragist, Kate Sheppard, who graces our $10 not was 2nd, and Sir Ed Hillary, who graces our $5 note was 3rd, and also named the most important living NZer - this was before he died in early 2008.) and you can still go and see the rooms where he did his undergraduate work at the old site of the University of Canterbury, which mercifully survived the 2010/2011 earthquakes.

@bonearete5419 8 лет назад

it must be so entertaining to have the professor as a friend. ....every meeting will be like a science lesson. He must be the center of attraction all the time in certain circle. I can almost hear the words " He is soooo cute!

@spudmckenzie4959 4 года назад

Maybe the friendship would be based on other things. Doubt his whole entire life would be focused on science

@iambiggus 6 лет назад

I bought a house in shale country upstate New York that had a big radon problem. I forget the numbers specifically, but for example safe radon levels are like 6ppm and our basement had like 50ppm. If you left the basement door closed for long enough, like a week, and then opened it, an odd, metallic odor would hit you. It’s extremely hard to describe, kind of like the smelling equivalent of chewing on aluminum foil. After I installed the mitigation system and vented the basement properly, the smell went away. No one will ever be able to convince me that radon is “odorless”.

@jacksong6226 Год назад

That was likely the “scent of the radon killing your receptors and the nerons firing out of control radiation tends to have a metallic taste/scent when you get a big dose, I have also smelled some trace radon and had a similar experience, just because you get a sense from the element does not mean the element is what you are smelling, it is the decay from the element killing your cells

@BGroothedde 11 лет назад

These videos never fail to fascinate me. Thanks Brady, thanks Professor!

@j4shortee 11 лет назад

More on the cloud chamber please. That was incredible.

@Mikeanglo 8 лет назад

Always humbling to see that these genius chemists are just as petty and rude as the rest of us, especially when it comes to addressing their competition XD

@joegillian314 7 лет назад

I have this vague feeling that historical figures are usually pretty awful people :D

@sauercrowder 4 года назад

@@joegillian314 As in sports, being as successful as they were often requires a certain egotistical mindset. Maybe you have to truly believe you are capable of great things if you are to accomplish them.

@theForrestGalantey 4 года назад

Love these videos and the way everything is explained. What a blessing you all give us, thank you all.

@paulramsey2922 4 года назад

My father is Robert W Ramsey in Maryland USA. He invented and helped design the Eperm , electret ion chamber used to measure Radon gas which is one of the most recognized methods to test for it in homes and buildings. It collects the ions generated from radon decay on a positively charged plate of Teflon housed in a faraway chamber of conductive plastic.

@magicbuskey 11 лет назад

this channel makes me so happy about life! thank you!

@LVLouisCyphre 6 лет назад

I greatly enjoy the professor's enthusiasm.

@dankole307 4 года назад

Having spent decades working with PhDs. One truth I learned was "get published or die". My analogy involves golf. You never root against an opponent. You just have to best them. Who ever wins is not as important as did science move forward. Another great vid.

@willcampbell2909 8 лет назад

"roids, that's his colleague" haha, love it.

@JediBuddhist 8 лет назад

Yes.. his given name is Hema. Had quite a tough time at school. Poor Chap.

@JonathanPurdy 11 лет назад

Sweet, I asked for this one a while back (not the only one probably). I was kinda hoping for more information on why there are adverts about having it in your home, but this is great. From what I gather, it's basically everywhere anyway and we shouldn't really worry too much about it. You guys are awesome. Keep it up.

@sgallaghermail 11 лет назад

The cloud chamber footage is amazing. Could you post it as a separate video?

@boriseng 10 лет назад

Cloud chamber, some kind of liquid is vaporized then the vapor is cooled so its close to condensing and the particles disrupt it enough to create a tiny vapor trail.

@dr.jenniferjewellphdearthq9297 6 лет назад

Awesome ! My New Year’s Resolution is to watch every Periodic Video. Thank You Sir Martyn

@trush0t1 4 года назад

7:36 the professor checking out them cheeks walkin by

@JacquesWS 8 лет назад

I love his hair.

@n111254789 4 года назад

You have to do at least 60 years of hard science and then your body undergoes metamorphosis and you just grow that hair and subsequently become the embodiment of science.

@briandeschene8424 Месяц назад

The best part of that Radon gas injection demonstration is the ethereal music that just started emanating from the Universe to accompany the visual spectacle. Nature does wonderful things.

@Bman-1970 4 года назад

Just found these videos. I love his personality.

@gggfx4144 4 года назад

Bringing a glass into a library where glasses are forbidden; a young man's spirit of outrageous rebellion persists a long time :D

@12301231234 11 лет назад

Each day is a little brighter knowing that the professor exists.

@deardaytona 11 лет назад

FINALLY! A VIDEO OF AN ELEMENT! THANK YOU SO MUCH BRADY!

@FeudalMoon 11 лет назад

Love this channel. So professional.

@eddiespencer1 6 лет назад

When I lived in Southern California in the mid-1990's, we had radon detectors in our homes. They were occasionally collected and replaced, but I don't know by whom or why. Today, I live in Maine and, on the coast at least, many homes have radon detectors as well.

@arerayace 11 лет назад

I did have a hard time understand as my knowledge in chemistry are relatively shallow. But I must say, braving myself through the whole video to watch what happens in the end was truly worth it. Beauty!

@MattKalicki21 11 лет назад

This channels videos literally NEVER get hate on them..The comments are always so polite.

@garrigproductions 6 лет назад

I stumbled across this video as am researching the possibility of Radon in my home. What a delightful and knowledgable man this is indeed, and may I say, what a groove hair cut too!. I would sincerely like to bring him along to spend the weekend with my friends and I the next time we indulge in Glastonbury Festival,...it would be fascinating to have him as part of our group for the weekend...yes we are a bit of an odd group but we buy tickets too so watch it!!

@justauser 3 года назад

If you want radon just attach a plastic bag to the end of the pipe coming out of my basement. I've unfortunately got an endless supply

@ericsbuds 11 лет назад

the professor is so smart. he is just so sharp. it is always wonderful to listen to what he has to say. please tell him for me brady! -jesse

@Anti-proton 11 лет назад

Radon glows for the same reason any other inert gas glows: The technique is actually a form of florescence where the gas is charged with electricity and ionizes. When electrons in higher "orbits" drop to lower "orbits", the change in energy is the emission of a photon in the visible spectrum. In some ways, this is similar to my XRF detector, but the XRF detector uses x-rays and now electricity to excite the atoms :P

@madansharma2700 4 года назад

Lovely as usual. It is nice to see a man so excited.

@johannchungsaojing 11 лет назад

I'm studying high school Physics at the moment and I found the cloud chamber at the end most exciting, nice video!! XP

@jacobmortimore 8 лет назад

hehe - I've made my competitor feel uncomfortable . i love this guy

@herefishyfishys 4 года назад

I could listen to this guy all day

@mofazzalhossain2944 Год назад

Sir, You are a smart scientist who demonstrate so well.

@ninjars1252 5 лет назад

Love your videos Prof. ! Thanks

@woolyt7055 11 лет назад

He is one man who is genuinely passionate about science. An excellent role model.

@MartinJDavidson 11 лет назад

A home located atop the "reading prong" (in New Jersey), built in the about 1955, had an "extra block" lay in its basement. Being tall in stature, I was glad until I found (by analysis of charcoal absorption samples) the accumulated radon there made breathing equivalent to smoking (20 cigarettes daily) [because tobacco plants gather strontium (or selenium?)-based on the health risk of alpha-decay going on inside your lungs. Fabulous show!

@PhilipLupercal 11 лет назад

Great video Brady! Radon has always been my favourite noble gas...

@Bear5177 11 лет назад

Excellent video. I really enjoyed this one. Loved the cloud chamber at the end. And the music really seems to fit. :D

@RannKanu 11 лет назад

Each of the cloud trails is the product of a radioactive decay, so by observing the quantity of trails you can see how radioactive something is (like a geiger counter), or by looking at individual trails you can make a guess at the nature of each of the decay events (i.e., the annotation on the video).

@SiliconBassist 10 лет назад

Very informative! I've always found radon to be a particularly interesting element, but I knew very little about it. On a side note: For some reason, I was under the impression that cloud chambers weren't commonly used anymore, having been superseded by the bubble chamber and spark chamber.

@Bob3D2000 7 лет назад

That bubble chamber at the end is wonderful! We only had tiny little ones at school.

@JWY 11 лет назад

I remember getting a little cloud chamber from Edmund Scientific when I was quite young. It was a small plastic container about 1 cup in volume with a pin setup to hold something radioactive in the center. I think I remember we set some dry ice and water inside and then it exposed tiny tracks coming off the pin head flickering in and out of view - as in this video but very miniature. My memory is pretty weak - but I was amazed to see the violent little atoms show themselves.

@SecularMentat 11 лет назад

I enjoyed doing a sonogashira reaction with a Palladium complex a few weeks ago in advanced synthesis. Very interesting chemistry with all those d-orbital shells.

@qoaa 11 лет назад

love this series, I so wish I could visit overseas too broke and of course I've never flown in my life, but thanks for the videos I really enjoy them

@Infloresence 11 лет назад

BRADY !! A video dedicated to that there cloud chamber is absolutely necessary.

@Anti-proton 11 лет назад

The US CDC says that 22,500 cases of Lung Cancer per year come from radon. if you test water from a fresh rain fall it will typically be radioactive for a short time, also from the radon washout. Amazing stuff.

@clarkelliott5389 4 года назад

A very interesting history lesson! Thanks so much!

@teutonieth 10 лет назад

We have the same type of cloud chamber here in Jyväskylä University Physics Departments lobby. After lunch I sometimes let myself get hypnotised by the trailings. It is very hypnotic and pretty.

@fede0101 11 лет назад

Wow best experiment, the cloud chamber, can you explain more of it? its truly amazing.

@h3rteby 11 лет назад

Awesome bubble chamber at the end, didn't know the trails were that easy to see! They really should add one of those big magnets underneath that make the particles spiral, would look even cooler and allow you to tell the different particles apart by their charge!

@herrbrahms 4 года назад

2:00 Professor, I have to quibble. If you place radium metal into water in order to collect helium and radon, what you collect instead is a much larger volume of hydrogen for a moment, before your apparatus risks an explosion that would send shards of glass and dissolved radioactive radium hydroxide everywhere. I think perhaps a more docile dissolved salt like radium chloride would have been used instead.

@ultimaIXultima 11 лет назад

wow, that scene at the end was awesome. i've never seen a "cloud chamber" before. any other videos with them?

@Vakito227 11 лет назад

You need to do a video on the Superactinides! Amazing video as always!

@BLX187 11 лет назад

i agree.. im sure everyone attending his lectures went on to be very successful thanks to his wisdom and way with the words

@thescientisttt 11 лет назад

i really love this man and i have lots of questions to ask him actually :)

@akashashen 11 лет назад

I like how, right after that moment, a couple seconds after false perspective suggests Martyn was looking elsewhere, there's this cut, and he says, "I don't know what happened."

@234dragoman 11 лет назад

Best channel on RU-vid

@Muscleduck 11 лет назад

Nothing better as a scientist to have your findings being criticised upon or challenged. It could open new perspectives, or, make you even more sure you got it right.

@greglawrencemusic 11 лет назад

Awesome and stunned at the end!

@AV1461 11 лет назад

Yes! More of the CloudChamber!!! Please!

@Monosekist 2 года назад

This video reminds me of when I was a kid. I was into chemistry and radon was my favorite because I thought it was cool that a gas was radioactive. I remember watching these videos when they were coming out. I didn’t really understand them at the time but I was allowed to watch them because they were educational.

@Tindometari 10 лет назад

"Rather like you can only get fresh meat - if you keep it for a long time, it decays." Except that not many people are interested in sitting down to a plate of grilled radium chops.

@queu5249 7 лет назад

Arkadia Moon You don't know my life. I could be The Hulk.

@radders261 5 лет назад

Just had to put a comment here because of my name haha. Brlliant video as always.

@bkam351 11 лет назад

I'm totally showing these videos to my students when I TA as a chemistry graduate student.

@ChumpusRex 11 лет назад

Radioactive decay usually has a huge amount of energy compared to chemical bonds. Most comes out as the radiation (alpha particle, electron or photon), but like firing a gun, the source atom experiences recoil (which is still big compared to chemical bond strength). In alpha/beta decay, the atom becomes one of a different type, with different chemistry, so the existing bonds may become unstable and break. However, even compatible bonds will usually break because of the recoil.

@davidsweeney111 11 лет назад

Superb video, you've got to have that jugular instinct, to want to get there before your competitors, that's natural!

@harryrohan 11 лет назад

Great video! Waiting for periodicvideos to go 1080p.

@ChudLife 3 года назад

Wow, wish I applied myself in school. This is amazing

@rosebrigade 4 года назад

The one thing I never understood is WHY were historical science figures so competitive. As humanity advances in scientific accomplishments, as a whole we're all doing it together. I get the idea of wanting to have your name written in history as a famous genius who discovered such-and-such first, but if we're all working towards the same goals, does it really matter who gets the credit, or better yet, if all who worked on said piece shared some of the credit? After all scientific milestones benefit all of us, not just the person who discovered them - if not for the direct benefits that come from them like advanced technology, pharmaceuticals or genetic engineering, then for just the amazing amount of knowledge that we can learn from those discoveries.

@IAmGameAddicted 6 лет назад

Excellent video

@KrissFliss 7 лет назад

Half-life 3 connfirmed!

@Quazex 4 года назад

This comment was 3 years ago Illuminati confirmed??????)??)???

@shapman280 4 года назад

@@Quazex AHAHAHHAHA

@TheUltraFez 11 лет назад

I'm a huge fan by the way, adore every video!

@bowley4 11 лет назад

love that the start of this video is his hands just shaking about as always... lovely. haha

@tommunyon2874 Месяц назад

I spent a few days at my godparents' house in Grand Junction, Colorado. I used a bedroom in their finished basement. It was years later that stories came out about how concrete and mortar in that area had been made with radioactive tailings from uranium deposits. Radon apparently could accumulate in basements to unhealthy levels, because of this.

@Kram1032 11 лет назад

Awesome video!

@jessegarcia121 11 лет назад

I love these videos!

@bingebammer9927 11 лет назад

I just had the same thought, it makes me happy seeing him joyous about some funny physics property :)

@soylentgreenb 11 лет назад

An interesting vignette that you missed out on was the radium/radon health craze of the early 20th century. A lot of those springs, especially hot springs, had pretty high concentrations of radium and radon. So there was this idea that since spring water was widely believed to be healthy, it must be the radon that's doing it. You could buy these mason jars in which you soak disks of cement made with uranium ore over night so that you could always have fresh, healthy radon water in the morning.

@douro20 4 года назад

It's called radon since it was first detected from the decay of radium. A particular isotope, radon-220, is sometimes called thoron since it is produced by radioactive decay of thorium.

@madusree 9 лет назад

Sir, I did radon exhalation rate by can technique. Do you have any idea about this calculation. I am unable to get the proper values.In some papers they give counts unit as Bq per meter cube hour and in some papers tracks per cm square. How can i take the counts for calculation. Is there any formula to calculate the standard deviation of radon exhaltion