Extra bits of Gold - Periodic Table of Videos

[BennyNgYK]

Your Hair Defies Gravity

[CommanderdMtllca]

Those oscillations are called what??

[docatomics]

...how well does dead sea water or red sea water fair at the same process.

~we shall certainly need a lot of such montomic particles of Au above the thermalsphere if we are to survive the near future in better form than the last time the previous arm of the local interstellar gas cloud "fell to earth" in a fashion befiting a archangel, 13,000 years ago !

[hanzithaking]

so if you would have 1 ton of gold it wouldnt be gold color anymore ???

[Nadritch]

@hanzithaking Sorry to reply to such an old comment, but no, a ton of gold would still be gold.

It's red in water because of the charge that was introduced changing the size of the individual atoms, not because of the amount of gold atoms that were in contact with each other.

[hanzithaking]

@Nadritch ok thanks for the reply :)

[2degucitas]

A mad scientist and an Irish hunk teaching science. Interesting combo.

[pyrioni]

Then we can change size of charges to make GOLD colour from ordinary cheap atoms, wow, with nano tech we don't need gold anymore, awesome.

[helliop]

So you know how science teachers would always give the example of a physical change by ripping a piece of paper into smaller and smaller bits and say its still a piece of paper, does that mean if you did the same thing to a piece of gold it would eventually become a chemical change, or is it still physical change?

[rockerlkj]

OOHH!! LOOK AT ME! I'M PROFESSOR MORIARTY! I'M MARRIED AND I'M GOING TO RUB IT IN THE FACES OF ALL YOU SINGLE, UNAPPRECIATED YOUNG PHYSISTS/CHEMISTS BE CAUSE I CAN!!!

Way to make me feel good about myself... :(

[3eneboy]

wouldn't mind having the second dude as an instructor, he's awesome.

[RSxxx1300]

so you could make them blue? or could you??

[Envergure]

What do you mean by "the particles are given a charge"? Does that bottle have a net charge? Does the water also have a charge? Why doesn't the gold discharge?

[big1buddy]

@Envergure If each nanoparticle in that sample has a +1 charge with no counterbalancing, the particles in the sample would repel each other to a degree on the scale of nuclear bombs, I'm guessing. I guess each nanoparticle has a +5 to + 20 charge and the solution itself is quite basic (with a lot of OH-)

[roidroid]

woaaaaaaaa

[imaqtlolz]

wasnt michael farady michael j fox's character from spin city?

[jessecax]

so if you went into space the ring wont be gold

[ytmoog]

@jessecax

No, it is the properties of the material not whether there is air about which makes the difference.

[PrivateSlacker]

harvesting gold from the sea would backfire economically.

No matter how secret you try to keep it, the news that gold is pouring out of somewhere would set off an espionage war to dwarf that over the atomic bomb.

Eventually everyone would know how to do it. Then the supply of gold will explode and cheapen it. Then all these currencies based on gold during the early 1900s would crash. Causing a worse depression than what happened.

[captwasabi]

I love the 2nd guy talking. You can tell that his brain wants to tell us so much but his mouth just isn't moving quite fast enough. I've been there soooooo many times. Great vids! Thanks for them all.

[glenwoofit]

A nice simple explanation by someone who looks to get really excited by the science! lol.... I think he needs to take some Valium before the next video as it might keep him from dancing infront of camera, Ants in pants or what! Only joking, Great Video....

[zeeneo]

Video production / editing and presenters are getting better.

Loving the videos. Keep it up.

[periodicvideos]

@zeeneo we try our best! :)

[thadude1337]

question why didnt they just try to make gold out of the salt??? that has got to be cheaper then failing in the sea

[ShadowsHeat]

I love this guy, he has the stereotypical mad scientist look.

[xxxvsxxx]

Professor Moriarty reminds me of Sherlock Holmes rival...

[pwn0grapher]

Moriarty. Professor Moriarty.

[zbret]

can you make a gold nanoparticle solution that is blue or violet, or for that matter reflecting UV? Or, does its color stop in the orange-yellow range and is limited to red (perhaps IR?) up to the normal gold-yellow-orange color?

[jeebersjumpincryst]

Prof. Moriarty!!!! Please hold the gold solution still long enough to let us get a peek at it! You are oscillating at the speed and frequency of a highly excited and energetic particle!!! Thanks all for the vid though, and keep it up. They are also my favorite ones on all of youtube. :-)

[tenisplayer]

what happens when you drink it, its like silver coloidal that kills bacteria??

[paulwheat]

I always enjoy Prof P's stories!!!!

[ch4p2]

michael faraday - one of my favorite chemists/physicists

[coffeebuzzz]

If only all teachers were able to communicate so clearly and concisely. Unfortunately, only about 10% of my teachers at school and Uni were anywhere close.

[taofledermaus]

@coffeebuzzz I can look back at all the teachers I've had and can only think of one or two that really showed the passion of teaching that motivated me to really want to learn.

[mcjhn]

@periodicvideos

what was the name of the electron oscillation? plasu or something?

thanks, great videos

[Moriarty2112]

@mcjhn Apologies for my impenetrable accent! The (collective) electron oscillation is called a plasmon.

Philip (speaking in video from ~ 1:35 onwards)

[Dante396]

@Moriarty2112 thanks for clearing up that word, i didnt catch it quite well :P

[theep16]

this guys is so energetic it was nice hearing him talk with all that enthusiasm.

[Easwarvasi6]

Since making the gold particles smaller made it red, will clumping huge amounts of gold particles make it a different colour?

[Grandpas51]

@ guy with the black sweater: please stand still!

[Reqrezentin]

This guy is awesome.

[brainstorm90]

is prof. moriarty german??? he really doesn't sound british!

[periodicvideos]

@brainstorm90 ha ha... he's Irish!

[HerrCameron]

@periodicvideos oh, i thought he was russian?

[pafnoocy]

@periodicvideos and that's why I absolutely love his stories! :)

[patrickwellerwrites]

@periodicvideos i'm some what irish

[Direkin]

@brainstorm90 He doesn't sound remotely German either...

[brainstorm90]

@Direkin neither british

[SchumiUCD]

@brainstorm90 He's from Northern Ireland. If you go to the right place, you could have a fascinating discussion over whether he's British or not. I wouldn't recommend it though!

[Moriarty2112]

@SchumiUCD Great comment - you made me laugh! I was brought up close to Castleblaney, Monaghan - not quite Northern Ireland but damn close. I only became conscious of the distinction between the pronunciation of "tree" and "three" when I started lecturing here in Nottingham...

All the best,

Philip (speaking in video from ~ 1:35 onwards)

[HerrCameron]

@brainstorm90 nope, he's russian

[Marrilandxtra]

@brainstorm90 fail lol

[poofnsauce]

@brainstorm90 c'mon really? moriarty? that's like the most common irish name that doesn't start with an O'

[culwin]

Faraday was a time traveller

[ShortyOwned]

Does Prof. Moriarty have a coffein problem?

[Blinkwing]

how is the cameraman drunk, eh i mean, why is the cameraman drunk?

[g1gster]

1:47 F.U haha!

[LolxDBart]

lol sugar high :p

[flanfan1212]

what an accent

[norxcontacts]

Cameraman, keep your hands off the zoom button.

[periodicvideos]

@norxcontacts oops, thanks. It is only with advice from people like you that I will ever improve... I wondered why the person suddenly seemed closer to me! Now I know. :)

[hpearson902]

@periodicvideos its cool man its a learning process, i love the videos..... keep pumping them out :)

[Infloresence]

@norxcontacts I think also if he centred on the Prof. and slightly lower angle you would see both of his hands suddenly appearing in view much more dramatically...

[DG121480]

@norxcontacts I think in a round about way, this guy just told you to piss off...

[geyser]

Moriarty's enthusiasm is contagious...

[bbsonjohn]

What is the order of the number of gold atoms in a nano gold particle?

[powerlink485]

Great video and enjoyed Moriaty he obviously takes a great interest in what he speaks about. it was interesting to think about how perhaps elsewhere in the universe perhaps there is a world where gold is in fact red, or blue just due to a difference in how its composed. Its just a shame that a great video about the properties of gold has to have some comments left by people who obviously lack proper socialization (WW2's victor or whatever is not the topic take your nonsense elsewhere).

[rekinu5]

its so gr8 that i see professor and that dude from 60 symbols, in the same video, <3

[pililibach]

Great video, just great...

[bemanos12345]

@pililibach agree

[PianoKwanMan]

@TomMarAlem1987

And that people in ghana were draped in gold as clothing!

[TomMarAlem1987]

@PianoKwanMan And what was the end of the Ghanains?

[PianoKwanMan]

@TomMarAlem1987

They got invaded. And their mines exploited by The spanish or portuguese (i forget), then britain.

[mistermoo564]

Why couldn't this have come out half a year ago? I wrote a research report on how changing the radii of gold nanoparticles changed the colour of the solution. Nothing would've made me happier than referencing the periodic table of videos!

[P00P0STER0US]

Fascinating stuff. Those wacky electrons are at it again!

[Willoq01]

thumbs up if you think Moriarty should be autotuned XD that would make it so much more interesting

[TheManRaptor]

Professor Moriarty was really entertaining. He should do the show more often.

[mcmurder3]

@TheManRaptor Thats true... He explains well and Talks clearly ... He should really be a teacher.. wait a minute.... ;;)

[periodicvideos]

@TheManRaptor you can see plenty of Prof Moriarty in action on our sixtysymbols channel, usually talking quantum physics and rock music.

[oisiaa]

@periodicvideos Sixtysymbols and Periodicvideos are my favorite 2 channels on all of Youtube!

[GLeNss]

@periodicvideos Does he know he shares his name with a Sherlock Holmes supervillain :P

[EddyScbr]

@periodicvideos Rock music? Well, that explains why I find him so amusing. Great minds think alike, right? =X

[3doog]

then can we change the oscillation of other elements so that it look like gold?

[ThrowingItAway]

@3doog so it acts like and looks like gold yess

[narutostarfire]

i want the professor to be my teacher. thumps up if you think he ll be a awesome teacher

[MadMacheart]

it's so easy to understand these videos and so much more fun than just to read the textbook :D

[KhmerD0g]

gold.

[reinux]

sorry, the oscillations are called what?

[williamkendrick]

faraday was such a great scientist in general. he did much more than just chemistry. wish i could find some good literature on him.

[ALAPINO]

I've said it before and I'll say it again, Brady-- these are great.

Thanks for putting these up in addition to the main videos.

Cheers!

[teemuruskeepaa]

You heard it here. The holy grail of nanotechnology is that just by changing the size of molecules, you can change their properties.

[maatu1]

cool

[ThatGuyFromAustria]

Fritz Haber is a very interesting historical figure. He was a brilliant scientist and a nationalist, who'd do anything to server Germany, be it fertiziler or poisonous gas. And he was of the Jewish faith. It is a good thing he died in 1934, knowledge of what came later would have ripped his hearth in two.

[ItsRainingDonkeys]

i dont get it.. so he failed. and thats it?

[uexp4]

@ItsRainingDonkeys that's not the point, the point is he tried and then failed.

[fugehdehyou]

@ItsRainingDonkeys he succeeded but its not worth the effort. Just like if you have bars of gold stacked on the moon it costs more to go there and get it than the price of gold.

I hope you understand :)

[ItsRainingDonkeys]

@fugehdehyou ah ok

[CommunityCommentary]

woooooo moriarty

[happychau456]

nice~

[Intervene]

Interesting. So shouldn't melted gold be red if your changing the size?

[TeoTheAwesome]

@Intervene I don't think so because the gold in video was dissolved in a liquid

[hagarr82]

@Intervene Actually no. That's because by melting gold, you are simply changing the physical status of the metal. When melted, gold molecules are still bound together, so they react with light in the same way than solid gold do. In a nano-colloid you have a suspension of groups of gold molecules so small you can't see them to the naked eye. But each of these groups is separeted from the others, so can react with light in a different way.

[Lessien881]

Keep up the great work guys! I always get so excited to see a new video in my box about these

[engelteir]

i love how excited this guy gets about science!

[dermo92]

Great as always guys, keep it up!