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@laurenouellette6592

3 жыл бұрын

It seems like technetium isn't available as a sponsorship level on Patreon. Is that intentional?

I like how the professor never gets any older, his hair just gets bigger and whiter

@Ihatenewname

3 жыл бұрын

🤣🤣👍

@SomeGuy-vo7we

3 жыл бұрын

We can estimate the professor's age by counting the growth rings in his hair 😆

@XB10001

2 жыл бұрын

He is getting older ... you can tell if you watch older videos. It was most noticeable in the past couple of years.

Nice to see our professor doing well. What legend he is, he had a huge impact on many generations. Long life prof. Martin

@matthewhambone3577

3 жыл бұрын

Well said 👏

@usamabinmurad8338

3 жыл бұрын

You said it. Legend....!

@iamaverygoodboi

3 жыл бұрын

he deserves a Nobel prize

@Joe_Bidens_hair_fetish

3 жыл бұрын

@@iamaverygoodboi The Nobel Prize doesn't mean anything anymore unfortunately

@iamaverygoodboi

3 жыл бұрын

@@Joe_Bidens_hair_fetish i hope it does

The greek word for pencil is ΜΟΛΥΒΙ too. Greetings from a greek chemist!

@sohenwei6937

3 жыл бұрын

μολύβι!

@JamilKhan-hk1wl

3 жыл бұрын

Mo aye bee?

@marksusskind1260

3 жыл бұрын

maw-loo-bee ?

@georgiost6189

3 жыл бұрын

@@marksusskind1260 maw-lee-vee

@UnderscoreZeroLP

3 жыл бұрын

@@JamilKhan-hk1wl that "A" is a capital lambda (L sound)

"I'm at home so I don't have samples of elements." "So here's some molybdenite..."

@zapfanzapfan

3 жыл бұрын

Still has the mineral collection though...

@divypatel1002

2 жыл бұрын

Molybdenite is not an element though... But I got what you're trying to say.

@sauercrowder

2 жыл бұрын

@@divypatel1002 Thank you for your understanding, I'm barely able to form complete sentences

I’ve been following this channel for a decade and more and just now I’m noticing that the Professor is left-handed.

@AlbrechtAaron

3 жыл бұрын

Just like me

"Neil's favorite..." Things like that are why I come here. Neil has a favorite element and The Professor both knows it and is HAPPY about it. That's cool.

"I'm at home, so I don't have samples of elements." I'm not sure that I believe you.

@invisibledave

3 жыл бұрын

I don't have samples of elements so I went in the house and found some spare lead.

@OrangeC7

3 жыл бұрын

@@invisibledave "I don't have samples of elements, so I made some myself"

@millomweb

3 жыл бұрын

So lt's start listing elements he has at home... Clearly, lead, carbon copper (wiring) Iron probably aluminium - although he'll have more ally alloys than elemental ally Tin - steel coating) Zinc - plated something

The story of molybdenum and its etymology was a treat to watch! Thank you, Professor!

1:20 I thought he was writing something in Greek at first and spent a few seconds pondering what "RTON" meant.

@pierreabbat6157

3 жыл бұрын

Καγω!

@mushyomens6885

3 жыл бұрын

Haha overanalyzing

@nagarajanvaidya9266

3 жыл бұрын

Haha same

@keyboard_toucher

3 жыл бұрын

what is the meaning of what he wrote?

@MrAwawe

3 жыл бұрын

@@keyboard_toucher He wrote "PTOV", short for "Periodic Table of Videos"

I like how graphite basically means “writing stuff”.

@hipparchos

3 жыл бұрын

and the verb γραφω= to write is probably echomimetic. So graphite would mean stuff that makes the grch, grch sound (or whatever you wanna spell it) when you scratch it on the writing surface

@peetjason6671

3 жыл бұрын

Graffiti = graphite

There is a pencil museum in the Lake District, I'm told it's quite graphic.

@_Wombat

3 жыл бұрын

Been there. Much more interesting than you'd expect! They have the world largest pencil :)

@jamesdriscoll_tmp1515

3 жыл бұрын

Write on!

@AsbestosMuffins

2 жыл бұрын

off with you, go on!

@ooooneeee

2 жыл бұрын

😂🤣

Over 40 years ago I went to visit the Climax molybdenum mine in Colorado. Basically they’ve crushed most of a mountain to a powder and mixed that with oil and soap (molybdenum and its ores have an affinity for oil) to separate out the molybdenum. Quite messy, although I think they’ve tidied up the tailings quite a lot. The mine was shut for a few years but is operating again.

@willj1598

3 жыл бұрын

And we're still at it. I'm at the Henderson Mine, which is also owned by Climax Molybdenum. It's a few mountains over. We're one of just a few mines specifically mining Molybdenum. More commonly it is recovered as a byproduct of copper mining. It's one of my favorite elements.

@AverageAlien

3 жыл бұрын

Straight to the blog

That's the first time I've seen lead sheathed cable like that.

@louistournas120

3 жыл бұрын

Yes, that is insane. My house has the wires covered in a cotton cloth I think that has a black paint on it. The wires for the bell also had cotton on it and it disintegrated and caused a short circuit and one day, I came home the the bell was ringing none stop.

@jonathanrichards593

3 жыл бұрын

It was very common in England, at least, when electricity was retrofitted in homes built before electric supply was a thing, and before there was anything resembling plastic insulation. The copper conductors were covered in a cotton and rubber compound for insulation, and then placed in the lead sheathing which could be unrolled and moulded around the existing house structure, such as joists in a roof space. I remember helping my father to remove and replace such wiring in my childhood home - although it still functioned while in place, if you moved it, the insulation had rotted inside, and just crumbled to dust!

@mernok2001

3 жыл бұрын

In Hungary cloth and rubber insulated wires were used until the 1960sbut those were durable.I have seen some of them in perfect condition.The cloth was impregnated with tar and has a nice smell.

@MyKharli

3 жыл бұрын

It can go live , i was feeding copper pipe into an attic full of lead sheathed wire , 10 shocks later i found myself unable to touch copper pipe even if i knew it was ok

@millomweb

3 жыл бұрын

Of course, they use copper nowadays - in 'pyro'. The modern stuff comes with an outer coating of bright orange plastic !

Outstanding hairstyle, Professor. Quite literally.

I've only now realised that in Polish the word "ołówek" for pencil comes from lead, which is "ołów". Really cool!

@Matticitt

3 жыл бұрын

Same.

@01DOGG01

3 жыл бұрын

And in Croatian, olov

@Yora21

3 жыл бұрын

In German, we literally call them "lead rods".

@mernok2001

3 жыл бұрын

Lead is Ólom in Hungarian and tin is olowa in Russian I think.Strange huh?

@ooooneeee

2 жыл бұрын

@@Yora21 I'd rather translate "Bleistift" as "led pen".

It‘s also one of my favourite elements: In my research, I do optical spectroscopy of heterostructures including MoS2 and MoSe2, which are 2D semiconductors.

@kyleboschen6220

3 жыл бұрын

A fellow TMD physicist! Where do you work? I'm currently doing my undergrad final year project on Exfoliating WS2 for CMDS experiments at my uni in Melbourne!

@fritzheini9867

3 жыл бұрын

@@kyleboschen6220 I work at ETH in Zürich, Switzerland. We are interested in optical signatures of correlated electronic states in TMD heterostructures.

@charlesdickens6706

3 жыл бұрын

....are MoSe and WSe also lubricants ?

i have a tube of moly-graph which is a grease that uses both graphite and molybdenum. its an excellent lubricant

Martyn's hair is looking especially floofy and majestic in this video!

@panykfelidae9018

3 жыл бұрын

thank you, I was afraid I was the only one whose initial thoughts were 'WOW, HE GOT FLUFFIER'

@jpdemer5

3 жыл бұрын

You can tell what the weather in England is like by checking Prof. Polikaoff's hair.

At this time of year I expected the Prof's hair to blow away, like a dandelion.

I used to live in Keswick and knew of the pencil museum. In fact I even used to live/work in what was a converted graphite mill in Newlands valley which is the next valley over from Borrowdale. It took me this long to realise the mining around that area wasn't just slate, but also graphite. The more you know.

I'm going to be so sad if the professor ever passes...He had such a huge impact on my love of science and chemistry.

@danielduncan6806

3 жыл бұрын

It is not a matter of 'if', but of 'when'. Fortunately for him, and more so for us, these videos will be forever.

The German word for pencil is actually “Bleistift” which translates to “lead pen"

For a split second I thought Brian May was going to enlighten me. Hadn't seen this in my recommendations in a while and nearly forgotten about this channel. Great content.

So interesting! The way language plays into science here is awesome

The word “plumber” also comes from the Latin word for lead “plumbum”.

@vinh7251

3 жыл бұрын

Plumbing and plumbers are so called because the pipework that used to carry water in buildings were manufactured from lead as it was cheaper and easier to work than copper. A couple of my friends lived in an old cottage where the incoming water main was still run in a lead pipe and I believe plumbers are still required to train in how to connect copper pipework to lead because there is still so much lead pipework around in the UK. Large underground pipes were often ceramic that was internally glazed to reduce water loss as these had to survive being buried without deforming and so needed to be stiffer than lead.

@FutureChaosTV

3 жыл бұрын

@@vinh7251 The UK still poisons the population with lead?

@tookitogo

3 жыл бұрын

@@FutureChaosTV It’s common in old installations around the world, and is normally more-or-less safe, because the pipes get “lined” with a layer of mineral deposits within a short period of time, preventing the water from being in contact with the lead itself. (In Flint, what went wrong is a sudden, substantial change in the water chemistry (rendering it more acidic), which dissolved away the mineral layer, and then allowed the more acidic water to contact the lead.)

I always love Professor Martyn's videos.

I find "molybdenum" easy enough to say on its own, but I do struggle a bit to recite the "manganese and mercury, molybdenum, magnesium" line from The Elements.

Your hair is outstanding, Professor.

@inesis

3 жыл бұрын

and upstanding too...

@theFLCLguy

3 жыл бұрын

It hides his big brain.

@dasbroisku

3 жыл бұрын

It is wonderful!

@philipemmons3580

3 жыл бұрын

You stole the words out of my mouth you thief

@evilsharkey8954

3 жыл бұрын

He’s had that puffy hair since he was a young man.

When I lived in southern China for three and a half years I somehow ended up with molybdenum poisoning, presumably from polluted water. I never drank tap water but I rarely cooked at home so who knows how the cooking was done… but there’s also the possibility that it was due to severe repeated skin exposure (perhaps all the showering because of the tropical conditions?) Anyway, very unpleasant.

@evilsharkey8954

3 жыл бұрын

Maybe someone was trying to off you.

Thanks to Professor P., Neil, and the rest of the Periodic Table of Videos team. Been watching for a number of years and always love to see what interesting things the team is up to. Glad to see that the team is all healthy and able to do some new videos. Cheers!

I first learnt of molybdenum from the film based on the play, Paint Your Wagon. The town, named after the metal, was called Molly Be Damned.

My periodic table from school years! Most probably the professor came to Cyprus at some point. KEO is a spirit manufacturing company in Cyprus, mostly known for its beer and St. John's Comandaria. The company supported the effort of ΠΕΕΧ (Pancyprian Union of Chemists) in developing the specific table and it was given to us in 2002 when I was a senior at high school, having chemisty as an elective. Nice video and very accurate pronouciation of the words!

What a brilliant guy. In case my kid struggles with chemistry a couple of years from now, I'll make him watch this channel.

@charlesdickens6706

3 жыл бұрын

.....also try to get hold of stuff like some of those time/life educational books from 1960s ,, there was one titled Matter covering chemistry then one titled Physics then Energy then Mathematics..Electricity n Magnetism...... The range of books is extensive and was part of a government push to compete with the Soviets . Generally all textbooks and educational books before the 1970s are the best but simply get thrown out from deceased estates . Actually some examples of Soviet books are Experiments without Explosions and Tales About Metals by Venetsky if I recall . A British book from early 1900s titled The Young Chemist has been reprinted often .

You made my day professor!

PTOV - Periodic Table Of Videos.

@beeble2003

3 жыл бұрын

Ohhhhh. I was thinking it was some kind of Greek or Russian word! :facepalm:

Excellent video. Very interesting, informative and worthwhile video.

How after all these years have I not realized the Professor is left handed! XD

@OnTheShouldersofScience

3 жыл бұрын

Haha, I never noticed either!

Prof., can you do a video explaining why metals like Mo have a high melting point, whereas others like Pb have it lower? Are there any interesting trends or outliers to the general reasoning?

Thank You Professor Sir Martyn Poliakoff .

Dont stop doing what you all are doing, from Canada i say thanks for over a decade of knowledge

Hi professor, thank you for making these vedios. I use your vedio to teach my 12 old child and we both learn a lot. Thank you so much from Taiwan.

Moly Dee, THE FINEST MACHINING ASSISTANT YET DEVISED BY NATURE AND THE SKILL OF MAN

@ObsoleteVodka

3 жыл бұрын

L U B R I C I T Y

Really superbly well-made! Excellent video!

Now that’s my kind of convoluted, Professor, and fascinating, to boot🖖🏼

I wish chemistry was taught as a mystery or puzzle in schools. I think that's the key aspect why these videos are so interesting and enjoyable. Instead of the audience being uninformed and merely informed by an authority who already is informed, we see experiments, tests, or recalling of previous research. It doesn't matter if the subject is history or chemistry, professor never relies on his authority. He uses phrasing like "we were taught in university that...", "I searched up papers about this and they demonstrated..." or "as I was working on this research, I learned...". And often enough the videos make sure to demonstrate the theory anyhow. Ironically it takes immense experience and knowledge to avoid relying on ones own authority to this extent. Most information one knows is just not valid for this kind of teaching, as the basic idea is to share not only that but also why one knows and and where one learned it.

@karhukivi

3 жыл бұрын

That is the way science is supposed to work! Beliefs, religions, art and politics do not work that way....

If they decided to go with the Latin name "plumbum" something similar would happen with Mo-Pb names, but in Spanish instead of Greek. (Pb is "plomo" in Spanish).

It's always such a pleasure seeing the professor :)

These videos are a treasure. Thank you, professor!

not sure why but this is the first periodic videos new video i've gotten in my sub feed for like over a year. I thought you guys stopped uploading

@matthewhambone3577

3 жыл бұрын

Never ending😜 keep up the great work thank you

MOH-lee-vthos (th as in "the") Moh-lee-VTHE-nee-o (The capitalized "e" as in echo) I'm Greek. Hope this helps. Glad to see the professor doing well!

Wonderful video. I will always love these :)

So glad to see this video pop up!

The professor's fro is looking on point today!

Another fascinating video thank you

It's also called "Molly-be-damned". Well, at least in The Brothers O'Toole historical documentary it was.

That periodic table of patrons is a really nice idea!!!

Love the videos, especially when the Prof. makes an appearance. Cheers

Love the garden Professor! ✌🏾

I love you professor, hope you can provide us with these awesome videos for a long time. S2

Always awesome to see the Professor

I was expecting the chat to go down a graphene bunny hole but the professor wisely avoided it

Watching these videos makes me want to study chemistry again, it was something that I really liked doing.

Prof Polikaoff, you certainly have the appearance of the archetypal professor though much better groomed, but there is nothing whatsoever of 'madness' in your erudite yet gentle mini-lectures.

Graphite is also used as a lubricant for steel/brass stringed instruments. For example in the string grooves of a guitar's nut.

@someone2506

3 жыл бұрын

Yup, used as a "dry" lubricant on rarely moving surfaces, more like an anti-seize and a "soft" filler (reduces vibrations in tensioners). Dry means that it won't collect dust and turn into an ugly and abrasive goo.

@Yora21

3 жыл бұрын

I believe it's because graphite consist of carbon sheets that are one atom thick and very strong, but individual sheets separate very easily. So you have them basically delaminate very easily and then the sheets moving across each other very smoothly.

This is very interesting

I’ve always wondered where that name came from. Never worked with it before, so I didn’t dig into the etymology. Now we know! Thank you, Professor!!!

The periodic table section of the volume Matter, from the Time-Life Science Library, explained the etymology of Molybdenum! I knew that as a kid in the early 70s!

@charlesdickens6706

3 жыл бұрын

......that range of time/life books is some of the best educational literature ever compiled in the English world . It rivals the Russian stuff . In the sixties it was evident that American youth were scientifically illiterate and the Russians might get ahead in the space race . Those books were part of a strategy to advance science literacy .They never foresaw the hippy revolution though . Schools went crazy with new teaching ideas which didn't work. Sesame Street saved the day though .

Thank you Sir Martin!!!

Great video Sir.. Have watched the other molybdenum wire video & wondering if you ever persuaded Neil to try altering the frequency of the current , turn the wire vertically, as well as try DC ? If not perhaps you folks could add such a video to your to-do list please ?

I thought they were called lead pencil because of the similar colour! Never would have guessed that you could write with lead. Great vid.

My dad told me when molykote (or molybdenum oil additive) came out in Argentina they did a demonstration where they ran an old jeep without oil, it failed immediately, and then they only added the additive (no oil) and it ran! What a great element molybdenum

I've used Molybdenum quite often in the grease used for CV axels (MoS2) really cool to see what it looks like in raw form :)

I wish I'd have kept studying chemistry and physics. It's so fascinating. Internet web marketing is not nearly as fulfilling, but pays the bills. Keep 'em coming, professor! Love this channel!

I studied ancient Greek, too. And the professor told us modern Greek speakers would understand it. And the few times I tried this, it worked. Try Chaucerian English in NYC. You will not be understood. Great video as always.

You might not believe this but this is a true story: There was this quiz website called QuizUp (now gone) which allowed users to make quizzes. Once i made a quiz about element symbols and their names. For Lead (Pb), i put in some options like Potassium, Lead, Sodium. I couldn't think of what to put in the fourth option so i made up a name "Plumbum" to confuse the people taking the quiz because it was close to the letters Pb. I thought was quite silly. But nevertheless i searched it to make sure it wasn't any official name of something but to my surprise, it turned out to be the Latin name of the element itself! So in a way, i "invented" the name Plumbum! But of course it doesn't matter, because it was done before.

Molybdenum disulphide is specifically an excellent high pressure, high temperature lubricant. You’ll find it in constant velocity driveshaft joints. It’s the black grease that never washes out of anything.

I'd like to see a video on Molybdenum (ii) acetate! The Mo-Mo quadruple bond feels like magic.

Professor WE LOVE YOU!!

Professor is such a smart person

Interestingly, in the mountains of Colorado, the Climax mine was once the largest producer of molybdenite in the world and is located just outside the town of Leadville, CO (which got it's name from lead deposits in the area).

i love this channel

Slovenian word for pencil is "svincnik" and lead is svinec. Nice to see you, Prof!

There needs to be a huge playlist of fun but informational youtube videos and I would just become so much smarter binge watching it

Happy to see ya professor!!!! Hairs looking like a real scientist!!!!!

nice video!

Molybdenum is by far the most exotic element that professional gardeners have to learn about in their education. The main elements plants are made of are Hydrogen, Carbon, and Oxygen (air and water) and the primary fertilizers Nitrogen, Phosphorous, Potassium, and Magnesium are all stuff you encounter all the time if you have just a passing interest in chemistry. Zink, Copper, and Chlorine are also familiar element, and I think most people might at least have heard of Manganese. But Boron and Molybdenum really stand out as stuff I've never encountered in any other context before.

Thank you professor martin

What just blew my mind is that, in my language, the word for pencil is also derived from the word for lead, and it's quite obvious, but I never made a connection untill now.

@yyunko7764

3 жыл бұрын

polish?

@Matticitt

3 жыл бұрын

@@yyunko7764 yeah

A brand-new video? Woo!

I'm a firefighter and we use graphite to lubricate our cutters and spreaders. (Jaws of life.) It's strange to think that you can lubricate something with a dry film.

The professor's hair game is on point!

very interesting and something I might have never stumbled upon on my own

Awesome videos

you guys are the best

I bought "Dry Lube" for an application at work, an its main ingredient is Molybdenum.

MoS2 beyond used in greeses for lubrication, recently got a lot of attention as a potential semiconductor of the future, being better than Silicon or Graphene.

@charlesdickens6706

3 жыл бұрын

....all the metal sulphides have interesting properties . CdS makes light dependent resistors , ZnS makes glows in dark following light exposure , calcium sulphide removes hair ,CuS is photoelectric ....

Nice to know, thanks.

Ahh, the Professor. Still teaching me chemistry at random intervals ☺️

Molybdenum is a hugely important element in alloying steels and industrial development, it increases the metal's strength particularly under high temps, deeper hardening for austenite steels, assists in welding and confers quite a lot of corrosion resistance.