I was first introduced to this channel 15 years ago, in elementary school. Now I'm doing my PhD in chemistry. How time flies.

@77Fmydog

Жыл бұрын

love it

@Markle2k

Жыл бұрын

I remember the small children being shown the channel in the beginning

@rubyperera8926

Жыл бұрын

That's so cool 😮

@ACEsMatter

Жыл бұрын

That's awesome ❤

@ACEsMatter

Жыл бұрын

I'm 45 years old and I just watch because it's interesting. I don't have a degree in chemistry but I fins this fascinating 😊

the most rare earth element is Neil's voice

@haoyuan92

Жыл бұрын

Atomic number infinity

@StarWarsBattleflop

Жыл бұрын

I can’t remember hearing a full sentence from him😂

@haoyuan92

Жыл бұрын

@@Andrew-ps9wd symbol Nl

@eliezervega2644

Жыл бұрын

😂haha

@Rabcup

Жыл бұрын

9:22

It's always a good day when Neil gets the Science Hammer out

@ehsnils

Жыл бұрын

Any day we might see a hydraulic press.

@joshmyer9

Жыл бұрын

​@@ehsnils '' -- Neil, doing his version of the classic "Welcome to the huudroolic press chan-nel" intro

@lapurta22

Жыл бұрын

Plus he got to play with some Aqua Regia. Neil was a happy lad, indeed!

@galefray

Жыл бұрын

Can we PLEASE call it something else?

@ArawnOfAnnwn

Жыл бұрын

@@galefray Ok. I hereby christen it Neils' Marvelous Mental Mastery MALLET! 😁

New Periodic Videos are rarer than new Periodic Elements.

@Jacob-Simonsen

Жыл бұрын

They only have 710 videos

@1224chrisng

Жыл бұрын

​@@Jacob-Simonsen I mean, there are over 710 neutron stars in the universe, each has a different number of protons, and they're practically overgrown nuclei anyways, so it's technically correct

@beeble2003

Жыл бұрын

They do about one video a month. That's quite a lot more often than new element discoveries...

6:02 They named the element after Copenhagen, but in Latin. Imagine if they named it in English, we were so close to get an element named Copium.

@alexpotts6520

Жыл бұрын

I'm imagining the headline, "Chad has discovered new reserves of copium"

@m.douglas8492

Жыл бұрын

Imagine dying because of copium ingestion.

@jacobcastro1885

Жыл бұрын

Meme Copium

@MurderBong

Жыл бұрын

ONE MUST ASK THEMSELVES, IS ‘COPENHAGEN’ IN ENGLISH? AN ENGLISH INTERPRETATION? 😂

@TomFynn

Жыл бұрын

I can't Copium with this.

Man, I love The Professor. Just always makes me happy listening to him talk

Love these videos guys, been watching since elementary school and now I'm going into college in a STEM major.

@me0101001000

Жыл бұрын

You and me both. I just started my PhD in chemistry

@TheTKPizza

Жыл бұрын

Same with me. Started watching around 2010, doing my Master's in chemistry now and still looking forward to every update of the periodic table of videos. :)

@herobrine1847

Жыл бұрын

What major?

The fact that it absorbs so many neutrons so well is actually what makes Hf the best material for nuclear control rods! It may be the worst thing for the cladding, but even just putting Hf tips on control rods can extend the life of the rods drastically!

@sixft7in

11 ай бұрын

Depending on the starting isotope, a single hafnium atom can absorb seven (7!) neutrons before being reduced to 0 neutron absorption cross section.

@fensoxx

10 ай бұрын

@@sixft7inyou two can’t be just civilian fans of nuclear power to break out these facts

@sixft7in

10 ай бұрын

@@fensoxx I'm a former US Navy nuclear reactor operator. 🤣

I love how each successive version of the elemental videos become more detailed

A documentary about the hunt for predicted elements would be cool. Going over the notes of the people talking about the elements before they were discovered and what the discoverer thought on the way to the discovery.

I love that my Australian high school chemistry class photo is still in the background of your videos!

I find it fascinating that weve had knowledge about elements like this for more than a hundred years.

@georgesheffield1580

Жыл бұрын

???

@ingihrannar8781

Жыл бұрын

Me too. Likewise i find it absurd that we have had jet power for 70 years, and steam power for over 200

Hafnium is used in plasma torch tips as they make starting the electric arc much easier. I was told long ago that Hafnium was also used in plasma screens as the electron gun for each pixel.

@christopherleubner6633

2 ай бұрын

Yup it is used in those. The thin oxide coating is an excellent thermo ionic electron emitter. The old HP single frequency helium neon lasers used a halfmium or zirconium cathode which made these lasers have a service life of over 100,000 hours. The reason is the metal emits electrons easier than the aluminum used in regular laser tubes and its active enough to combine with nitrogen hydrogen and oxygen but it will not sputter coat the inside of the tube ❤

It's also currently used in the tip of the electrode for most(all) plasma cutting torches. Something to do with it's emission of electrons helps to get the pilot arc started when you pull the torch trigger.

I knew of Hf from its use in plasma cutter electrodes, but this is a lovely way to expand on that on a Friday afternoon 🙂

Man, I was actually watching your videos from 10+ years ago and I just finished my IB chem exam today - didn't think I'd see this video pop up on this day haha Absolutely love your videos, they're so informative as well as entertaining

Omg I'm early. I've been watching you guys for over a decade.

"What they thought Copenhagen was called in Latin" I like how they didn't even bother to look it up. 😃

Yes! One of my favorite series.

Lots of thermal spray applications with hafnium oxide, carbide, nitride, diboride, etc.. Loved the Nature article noted Moseley's great importance.

Waited for a revised video for Hafnium, because of the missing mention of the origin of the metal's name. Glad we finally got it, i love you guys 🇩🇰

Amazing, I love watching these videos before bed and I find them both educational and super relaxing.

Thank you so much! Your videos are so entertaining and informative! I turned my first and second year Chem students on to your periodic table with rave reviews!

I used to teach chemistry in high school years ago in Costa Rica and I used to show this channel to my students. My students were from all around the world and I'm glad to have introduced them to this grand show of humor, lab and chemistry - Cheers!

Hope you’re keeping well Professor and the rest of the Periodic videos team. Sending all my love and thanks for the fabulous videos 💜

A new Legend of Zelda game and a new Periodic Videos video, what a day!

Tony Lippman is a great friend. Those are some beautiful samples. The crystialite one is lovely

You guys forgot titanium burns too! I love hearing the back stories.

@webchimp

Жыл бұрын

That was a plot point in an old Iron Man comic. The Soviets had created a suit out of it and called their guy Titanium Man. During a fight one of Iron Man's boot jets ignited Titanium Man's suit, incinerating him

I am working right now with HfCl4 as a precursor, actually. I use it for creation of high entropy perovskite oxides. Very interesting compound!

@ksilebo

Жыл бұрын

What do you do with these compounds?

@dfh1299

Жыл бұрын

@@ksilebo You mean the perovskites? Potential materials for semiconductor industry. They have a large variety of properties like ferroelectrics, magnetism, optics etc. They are deposited onto different substrates like MgO or Si.

@ksilebo

Жыл бұрын

@@dfh1299 Isnt it CaTiO3? Where is the Hf in there?

@dfh1299

Жыл бұрын

@@ksilebo This is the crystal Perovskite but I am talking about the crystal structure perovskites with the general formula ABX3. And high entropy oxide means that there are at least five metals involved (and Hf can be one of them)

Man I love this guy. Wonder how he gets the time make videos and also play guitar in Queen.

Such a brilliant series! And such a great professor to host it. Thank you!

A lovely way to end my day. A new periodic video always makes me smile.

Fascinating Video!! Thank you for your continuing updating of Elements.

Really enjoy these videos has been many years since my university days but still enjoy learning.

I love The Professor recounting what happened in the experiments, with his funny remarks. Thanks for the videos guys!

Gotta love Neil - nice to see him smiling. Thank you for another video, new ones always welcome !

Some other interesting facts about hafnium: Hafnium carbo-nitride is thought to be the material with the highest melting point in the universe, around 4200°C. We can't be sure because of the difficulty involved. Any container will melt before HfCN! Another interesting fact is hafnium's reactivity with oxygen, one of the greatest of all the elements. People might be familiar with the thermite reaction where aluminium "steals" the oxygen from iron oxide to form alumina and molten iron. Well, it should be possible to make hafnium+alumina thermite! That is, the hafnium can steal oxygen atoms from alumina to form hafnia and aluminium!

Very neat stuff, glad you were able to get some samples to experiment with. Those sparkles from the burner were really pretty.

Hafnium is also used in control rods in some pressurized water reactors. It has many stable isotopes, and a propensity to absorb neutrons.

If you fuse two atoms of hafnium, do you get an atom of holnium?

Great video.❤I finally have time to watch it carefully.Cheers❤

Can someone please tell the professor that we love him so much ♥

Halfnium is used in plasma cutter tips. It sits the in center of the copper center electrode and the tiny chunk of hafnium melts and forms a pool where the main plasma arc originates from. It makes for much longer lasting electrodes than the old tungsten electrodes.

It also forms one of the highest temperature ceramic. HfC

It's truly exciting! When a new video is posted

We're Living In The Future But The Past Rewinds Bless Up Team

I wish you the best my man. You are a wonderful scientist

Considering the properties of Titanium, the chemical resistance to acid and the bright oxidation in flame make sense.

Every time I watch one of your videos, I miss being in a chemistry lab!

This is my first experience with this channel. I'll be immersed in its contents for the next few hours, days, and months. My biggest takeaway from this video, unfortunately, is that everyone knows this, and subsequent generations would struggle to differentiate between two elements because they begin with the letter "C".

Hafnium is one of my favourite elements solely because "haf" means "woof" in my native language (Czech)

@pacificcoastpiper3949

Жыл бұрын

And isn’t your language the one that gave us sailors the ahoy greeting??

@MNbenMN

Жыл бұрын

​@@pacificcoastpiper3949 It might be the other way around. "Hoy" in middle english revived as "ahoy" in english used in sailing, then later popularized in Czech and Slovak as "ahoj" in the 1930s.... but I'm not a linguist. Just a guy with google at his fingertips :)

@pacificcoastpiper3949

Жыл бұрын

@@MNbenMN interesting 🤔

@beeble2003

Жыл бұрын

@@pacificcoastpiper3949 Any story about a landlocked country's language being the source of a nautical term is _very_ suspect.

Wow, so great to see another video from you guys, totally made my day, hope to see another soon, thanks for the brain fuel.

Another fantastic video! Thanks for sharing!

What a fascinating discussion 😊 I love the Titanium/ Zirconium group

Love this professor

Very interesting video about Hafnium. I happen to live in Denmark, and as a patent attorney, I get to read a lot of patents in my work. As an electronics engineer, I am not that familiar with the sub-branch of patents directed towards chemistry. However, I always find your videos and thorough explanations worth watching.

@ferretyluv

Жыл бұрын

How are you both an engineer and an attorney?

@davidrenton

11 ай бұрын

@@ferretyluv i would imagine as patents for certain areas, such as Electronics Engineering need a specialised knowledge that would not be common for a Lawyer. So effectively you would need an Engineer who is also a qualified Lawyer. I would imagine it's quite common esp in areas such as Medicine, Chemistry

Hafnium is used as a control rod material in some types of nuclear reactors. It has a unique property in that it has several stable isotopes and the nucleus can absorb a lot of neutrons without becoming unstable or transmutating.

11:25 - Hf neutron absorption cross-section and its corrosion resistance, hardness, and chemical compatibility with Zr fuel cladding make it superb for reactor control rods, but it's too expensive (outside of special reactors) so most are made of cheaper neutron absorbers like silver or boron.

@grantbitman1448

Жыл бұрын

The subs I served on used hafnium control rods.

Aww, great vid. Interesting if it could replace indium. A lot of people don't realize the Earth as far as we know has a very finite amount of it left and currently, we don't recycle it. The arc would be that Phones would increase in price and that eventually- only the Very wealthy would own a touch screen phone, which would make most common people have to revert back to flip phones, which would negate the desire to be on one 24/7, which would arrest our desocialization from each other. Can you imagine, it's the 80's all over again and people are talking to other people, and we are connected to one another again. The Sim puts interesting paradox's out there but not without correcting them when they become too one sided. Us running out of Indium in the not-so-distant future is a way for the sim to balance itself again. With that in mind, I'm hoping Hafnium is only theoretically able to replace it. Anywho, I think I've seen this vid though can't remember- but I watched all of the ones you made a few years back, enthralling.

Hafnium seems like a fantastic element for alloys, especially with titanium! That toughness, high melting point, and general unreactivity seems quite nice. Shame its so expensive. Its kind of amazing how many elements are downright ignored, especially considering that there's a limited number of stable ones.

@beeble2003

Жыл бұрын

It's expensive and "ignored" because there's not much of it around.

@janewray-mccann2133

Жыл бұрын

I would alloy it with berylium.

This is a blast from the past. If I had known how expensive this was, I would have reclaimed the swarf out of my center-less grinder I was using to grind it

Thanks! I did not notice that it was a new video! Thanks!

It’s like an extremely expensive sparkler when burning…I can hear professor being like “now this sparkla is quite fantastic.”

ahh i love seeing new periodic videos!!

Your videos are really inspiring and new video always makes my day and it was so full of knowledge which I love ❤thank you from Pakistan

I heard of that story about the Nobel medals and aqua regia! I thought of it when you talked about Neil recovering the gold from the aqua regia.

The first time I came across Hafnium was about thirty years ago. I'd just bought a plasma cutter and the consumable electrode tip had a tiny Hafnium pellet in the end. They were stupidly expensive consumables.

Great video as always

💯 for having twisty puzzles on your desk!

@ferretyluv

Жыл бұрын

You mean Rubik’s cubes?

@autismparent

Жыл бұрын

@@ferretyluv Rubik's cubes are a subtype of twisty puzzles. He has at least a megaminx, pyraminx, and what I think is a Fisher cube on his desk.

This channel video is very important 😢 It deserve more subscribers 👏

Love the fact that the impurity that was thought to be a nuisance in nuclear energy production is now considered for use in everyday devices replacing other material that is more scarce. Store. Recycle. Profit.

Hafnium is more dense and perhaps fall into the flame better than Zirconium. I love how often I hear new explanations for simple observations.

3:08 never have I laughed so hard - "much to Neil's pleasure" simply melts the moment.......

Wonderful fireworks for his majesty's coronation.

Fascinating. I always liked halfnium--I figured it was half as good as Titanium but sounds twice as cool

Fascinating presentation thanks xxx.

Hafnium is used in welding rods and plasma cutting electrodes because it emits electrons easily, in addition to its high melting point.

Quite ironic that elements apart of the same group have such vastly different cross sectional absorptions of neutrons. Either way Halfnium is super important for reactors since they are used in control rods as well as the fact they have many stable isotopes. Unlike boron which turns to gas after absorbing neutrons.

Great video love watching thanks for sharing

Great video! I can't afford to be a patron, but someday if I'm able, I'd love to take the Tungsten spot :) Tungsten is my favorite element!

9:12 Reminds me of a sparkler we all used on July 4th as kids

Wow! I bought 50g of Hafnium a couple of years ago for $71. Looks like this was a lucky investment for me.

You left out titanium when comparing flammability. It's notorious for causing fires when machining.

Did Neil recover the gold disolved in aqua regia? Would be interesting to see the process or in general how Neil disposes of liquids after the videos are shot

@beeble2003

Жыл бұрын

The video says he recovered it, yes. (Can't remember if it was a caption or mentioned in the voiceover.)

@zawbones5198

10 ай бұрын

3:54

Hearing "This made Neil very happy" means this video is about to get fun.

The corners of Neil's mouth turn up slightly. Martin: "A big smile spread across Neil's face!"

I love the scientific examinations occuring at 2:01

ooh noice... i love the smell of hafnium in the morning ( o.o)

"Nitric acid has met its match"

Every salute (a firework that makes a very loud boom), in every fireworks show you have seen, where the salute makes a large splash of bright sparks, those sparks are burning Titanium. I have seen salutes made with Zirconium, and it burns brighter still. I have heard of an amature pyrotechnics maker that made a salute with Hafnium, and it supposedly burned brighter than both.

Hafnium's anti-corrosive properties would make it an excellent liner for piping in molten salt nuclear reactors. It's strong capture of neutrons, however may pose an issue.

Love listening to the professor

@yaad2226

Жыл бұрын

YO MAMA LIKE HIM??

Happy birthday hafnium 🎉

On the burning filings of hafnium and zirconium. I've been told that a titanium fire is a very bright fire so it fits with the other elements in the column too.

This one of the most interesting videos he's produced

You should have tried concentrated sulfuric acid!!! Hafnium and zirconium both dissolve in concentrated sulfuric acid.

It was predicted to exist by Dmitri Mendeleev, inventor of the Periodic table, in 1869 and proved to exist in 1923. It's used to make Control Rods in Nuclear Reactors.

Excellent video

That is very interesting video.I will see it tomorrow.❤

Dear professor, I have always wanted to know what you do with the used / spent chemicals in the lab. It would be interesting if you could explain how this is done. Greetings from Denmark