Radon - Periodic Table of Videos

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Күн бұрын

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/
Follow us on Facebook at / periodicvideos
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)

Пікірлер: 883

@amandaharris3283 9 жыл бұрын

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

@hefhef54321 7 жыл бұрын

@Antony Quigley She's quoting him...

@genericname3744 7 жыл бұрын

Antony Quigley You Sir are a dumbass

@rebelrunner561 7 жыл бұрын

pavan dutt COVFEFE

@aleph0x 5 жыл бұрын

hee hee! top comment!

@marcusmckenzie3686 4 жыл бұрын

0 ok

@kapirock7903 4 жыл бұрын

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 жыл бұрын

The cloud chamber was awesome.

@c4715 4 жыл бұрын

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

@peter4210 4 жыл бұрын

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 жыл бұрын

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 жыл бұрын

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 жыл бұрын

I prefer the term Gas chamber

@mechareaper 11 жыл бұрын

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.

@syndicat4930 8 жыл бұрын

This guy is called science

@12125512 8 жыл бұрын

+Syndi Cat he is science

@1503nemanja 8 жыл бұрын

Science is his middle name

@kingofgoldnessr9364 7 жыл бұрын

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 жыл бұрын

Anyone know his full name? Thanks

@RandomVideoGuy-qy8fu 7 жыл бұрын

Sir Martyn Poliakoff

@garywilson3042 5 жыл бұрын

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

@marclarell 9 жыл бұрын

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 жыл бұрын

ArThorS MAGIC

@oobermate 10 жыл бұрын

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

@MinenArbeiterLP 4 жыл бұрын

What is beauty my friend

@drzecelectric4302 4 жыл бұрын

@@MinenArbeiterLP the cloud chamber

@MinenArbeiterLP 4 жыл бұрын

@@drzecelectric4302 what is beauty i mean what its

@KarbineKyle 9 жыл бұрын

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 жыл бұрын

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

@spudmckenzie4959 4 жыл бұрын

You dont anymore? What happened??

@AeronN7 10 жыл бұрын

hee hee!

@primaryodors 2 жыл бұрын

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!

@Tonjevic 11 жыл бұрын

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 ай бұрын

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!

@bernardputersznit64 3 жыл бұрын

I just adore the cloud chamber demo - Thanks Professor!

@BGroothedde 11 жыл бұрын

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

@j4shortee 11 жыл бұрын

More on the cloud chamber please. That was incredible.

@theForrestGalantey 4 жыл бұрын

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

@magicbuskey 11 жыл бұрын

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

@LVLouisCyphre 6 жыл бұрын

I greatly enjoy the professor's enthusiasm.

@MilanTheAngel 8 жыл бұрын

1:23 lol Polonium is shaped like Poland

@JonathanPurdy 11 жыл бұрын

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.

@kiwibeca Жыл бұрын

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.

@dr.jenniferjewellphdearthq9297 6 жыл бұрын

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

@bonearete5419 8 жыл бұрын

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 жыл бұрын

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

@12301231234 11 жыл бұрын

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

@FeudalMoon 11 жыл бұрын

Love this channel. So professional.

@Bman-1970 4 жыл бұрын

Just found these videos. I love his personality.

@paulramsey2922 4 жыл бұрын

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.

@arerayace 11 жыл бұрын

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!

@eddiespencer1 6 жыл бұрын

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.

@iambiggus 6 жыл бұрын

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 Жыл бұрын

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

@Mikeanglo 8 жыл бұрын

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 жыл бұрын

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

@sauercrowder 4 жыл бұрын

@@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.

@deardaytona 11 жыл бұрын

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

@ericsbuds 11 жыл бұрын

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

@sgallaghermail 11 жыл бұрын

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

@garrigproductions 6 жыл бұрын

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!!

@mofazzalhossain2944 Жыл бұрын

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

@boriseng 10 жыл бұрын

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.

@ninjars1252 5 жыл бұрын

Love your videos Prof. ! Thanks

@herefishyfishys 4 жыл бұрын

I could listen to this guy all day

@madansharma2700 4 жыл бұрын

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

@willcampbell2909 8 жыл бұрын

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

@JediBuddhist 8 жыл бұрын

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

@johannchungsaojing 11 жыл бұрын

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

@MattKalicki21 11 жыл бұрын

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

@JacquesWS 8 жыл бұрын

I love his hair.

@n111254789 4 жыл бұрын

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.

@BLX187 11 жыл бұрын

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

@SiliconBassist 10 жыл бұрын

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.

@dankole307 4 жыл бұрын

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.

@clarkelliott5389 4 жыл бұрын

A very interesting history lesson! Thanks so much!

@PhilipLupercal 11 жыл бұрын

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

@woolyt7055 11 жыл бұрын

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

@MartinJDavidson 11 жыл бұрын

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!

@Bear5177 11 жыл бұрын

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

@briandeschene8424 2 ай бұрын

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.

@Bob3D2000 7 жыл бұрын

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

@qoaa 11 жыл бұрын

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 жыл бұрын

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

@gggfx4144 4 жыл бұрын

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

@justauser 3 жыл бұрын

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

@SecularMentat 11 жыл бұрын

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.

@ChudLife 3 жыл бұрын

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

@thescientisttt 11 жыл бұрын

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

@greglawrencemusic 11 жыл бұрын

Awesome and stunned at the end!

@Muscleduck 11 жыл бұрын

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.

@fede0101 11 жыл бұрын

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

@Vakito227 11 жыл бұрын

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

@RannKanu 11 жыл бұрын

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).

@234dragoman 11 жыл бұрын

Best channel on KZfaq

@teutonieth 10 жыл бұрын

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.

@Anti-proton 11 жыл бұрын

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

@AV1461 11 жыл бұрын

Yes! More of the CloudChamber!!! Please!

@IAmGameAddicted 6 жыл бұрын

Excellent video

@jessegarcia121 11 жыл бұрын

I love these videos!

@TheUltraFez 11 жыл бұрын

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

@bkam351 11 жыл бұрын

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

@jacobmortimore 8 жыл бұрын

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

@davidsweeney111 11 жыл бұрын

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

@harryrohan 11 жыл бұрын

Great video! Waiting for periodicvideos to go 1080p.

@herrbrahms 4 жыл бұрын

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.

@JWY 11 жыл бұрын

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.

@akashashen 11 жыл бұрын

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."

@h3rteby 11 жыл бұрын

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!

@Kram1032 11 жыл бұрын

Awesome video!

@radders261 5 жыл бұрын

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

@bowley4 11 жыл бұрын

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

@Deimoclese 11 жыл бұрын

Whoo! New Period Video. Nothing like the original series, eh Brady? Keep it up!

@Zralf 10 жыл бұрын

you got yourself another subscriber good sir.

@Monosekist 2 жыл бұрын

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.

@Anti-proton 11 жыл бұрын

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.

@Enke796 11 жыл бұрын

9:02 Please make a full video about it. It's look amazing.

@nattsurfaren 11 жыл бұрын

Thanks for the response. Cool to know this

@TheAtheist22 Жыл бұрын

Very interesting. I've subscribed.

@kingkrazy0wns 11 жыл бұрын

the number after the element refers to the element's atomic weight. lead 214 weights 214 atomic mass units (amu), whereas lead 210 weighs 210 amu. the extra weight in lead 214 is from the four extra neutrons that it has in its nucleus.

@ChumpusRex 11 жыл бұрын

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.

@maxeyre2024 9 жыл бұрын

Hi guys! It's Max! Remember, the one who sent you the letter. I love your videos.

@therealjammit 11 жыл бұрын

The vapor is just at the temperature required to barely boil. It's like a cold cloud. When a high energy particle knocks into a few atoms of vapor, it causes the vapor atoms it runs into to heat up enough to boil, but only the vapor atoms it runs into. This leaves a trail in the cloud.

@MrDragon584 11 жыл бұрын

I really want that tie, it's so awesome

@bingebammer9927 11 жыл бұрын

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

@derrick8206 2 жыл бұрын

I've never seen a cloud chamber before. Brilliant. 👏

@puncheex2 11 жыл бұрын

The alpha rays off the sample have a pretty hefty momentum. They are estimated to ricochet on the order of 140,000 times before they come to rest. The ricochets, particularly at the beginning, have the power to ionize the atom they hit (knock one or more electrons away). A cloud chamber has a volume of air super-saturated with the media (water or alcohol). Ions have the ability to trigger condensation in their immediate area, So their trails are marked until their energy becomes too low.