Praseodymium - A Metal that SLOWS The SPEED OF LIGHT!
Ғылым және технология
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Thanks for the channel support:
Gabor Buza, Yash Pande, Vadim Polyash, larry Han, Applied science.
ATTENTION! This video shows dangerous experiments! Do not repeatthe experiments shown in this VIDEO!
So, today I will continue to talk to you about the rare earth metals - lanthanides, and this time we will focus on the metal called praseodymium.
It is a metal that has electrons in f orbitals, and is located in the period of lanthanides.
Because of its chemical activity, praseodymium is stored in ampoules in order to prevent oxidation in air, after removing it from the ampoule praseodymium looks like a shiny metal with a yellow-green tint due to a layer of oxide covering the metal.
Praseodymium can be found in nature in the monazite and bastnasite minerals which are used for producing almost all of the rare earth metals.
Price-wise praseodymium is almost the same as neodymium, I paid $15 for 10 grams in a vial.
From the chemical point of view, praseodymium can resemble neodymium as it is also readily soluble in hydrochloric acid, forming praseodymium chloride - a green substance, like many of its compounds.
Even the name praseodymium derived from the Greek prasinos, which means green. If we add sodium hydroxide to the praseodymium chloride, it will form a greenish precipitate of praseodymium hydroxide.
This hydroxide, like many compounds of lanthanides, forms a soluble complex with Trilon b - a compound that is used to remove scale from kettles.
Praseodymium dissolves in acetic acid, and like other lanthanides forms a suspension of the hydroxides due to the hydrolysis with water.
When heating with a burner, pieces of praseodymium are oxidized in air and being covered with an oxide layer, but they will not light up.
Though the powder of praseodymium lits quite well, forming fumes from its oxides.
The oxide of praseodymium is used in the production of a very unusual glass which is able to slow down the speed of a light pulse by changing its group velocity due to the high refractive index of the glass.
Also, the glass made with the addition of praseodymium has a greenish yellow color, it is used as a light filter in the glasses for glassblowers.
Praseodymium, like neodymium, is weakly attracted to magnets and is paramagnetic. However, as with neodymium the composition of praseodymium-iron-boron can be used for the production of powerful praseodymium magnets.
However these magnets have a big drawback - a low operating temperature, meaning that such magnets may lose their magnetic properties already at a temperature of 30 degrees Celsius, for example in the hands of a person.
Neodymium magnets unlike praseodymium are demagnetized at 55 degrees Celsius, this effect is called the Curie point.
Also the alloy of praseodymium and Nickel is used for creating ultra-low temperatures utilizing the cooling effect of the paramagnetic field.
music by TOBU: / tobuofficial
Пікірлер: 233
Thanks for the channel support: Gabor Buza, Yash Pande, Vadim Polyash, larry Han, Applied science.
@cyrilmatthew2995
7 жыл бұрын
Thoisoi2 - Chemical Experiments! u ll be breaking bad soon ...😸😹
@Mp57navy
7 жыл бұрын
Thoisoi... The title is a clickbait or flamebait. The speed of light is a constant. However, light travels at different speeds through transparent materials. And resumes at c upon exiting into a vacuum. So, no slowing down. You will have similar results with water or Diamonds.
@goodandplenty4u
7 жыл бұрын
Only in the crystal form or when they used that element to make a crystal then light can be slowed down. here's a link, blogs.scientificamerican.com/observations/crystal-memory-allows-efficient-storage-of-quantum-information-in-light/ So soon we are going to have crystal memory cards for phones and etc
@kuskus_th13
7 жыл бұрын
Mp57navy I think he just didn't have anything special to say there
@XXX-qx7xp
7 жыл бұрын
Лол, не знал, что у тебя есть и англоязычный канал) Молодец.
to clarify for anyone watching, trilon B is EDTA(Ethylenediaminetetraacetic acid)
@dorito_mauller
Жыл бұрын
Bruuuuhhhh.
@michaelmyrick6973
4 ай бұрын
😂 thanks I was wondering
That feeling when Thoisoi releases a new video here
@sugisdoomguy54
2 жыл бұрын
Yea even now
0:18 "leather coat crazy demon" lol
Just want to say , I've watched all your videos and really enjoy them. Chemistry is my favorite subject and your videos really do a great job of breaking down an element and it's basic operational properties. I subscribed a few years ago- Thanks.
Great information provided. Excellent work uploaded.
This could be a critical metal for use in optical computers... Or a good aid to use in holographic memory modules.
Love the channel, even though is been 50 years since my last chemistry Class!
I love this channel it's legit informative
Hey I watch all your vids..they are extremly interesting....Thanks...keep them coming
love your videos, very interesting!!!
Love your experiments
My new favorite channel for sure
Thoisoi, it would be really cool for you to add a metallurgy alloys section to your video compilation!
Great channel .. Thank You.
Awesome, thankyou
Great, Informative Video
This metal has properties which, when combined with nitinol and some ingenuity, could produce very powerful engines which are motivated by temperature and magnetism.
Very nice video!
While playing Star Control 2, i needed to know what this metal is because it gives lots of credits :D
Hah I was just listening to the same song through spotify :D Great video though! :D
Can you please share from where you get these samples?
best as usual
Your channel is fantastic!
I love the Thoisoi series, a fascinating insight each time but, this was the first I've watched with background music which spoilt it a bit. Julian
Nice videos keep going
bro u make my day
"Light cannot be anything else but a longitudinal disturbance in the ether, involving alternate compressions and rarefactions. In other words, light can be nothing else than a sound wave in the ether." - Nikola Tesla. Inside the glass, the ether atmosphere is rarefied to an extent so the speed of light slows down. Once outside the glass, light speeds back up again because the ether atmosphere is denser outside the glass.
please do a video about ytrium
@electroflame6188
7 жыл бұрын
+Skoby192 is Boss Yttrium is element 39 on the periodic table and as such, is not a radioactive element.
@diaztriwardhana3077
7 жыл бұрын
Skoby192 is Boss you're mistaking it for ytterbium
@disquedurdupoker9465
7 жыл бұрын
Neither ytterbium is radioactive...
@johnmichael1594
6 жыл бұрын
please read a book. all you tube-tard fuckwads, you don't get a basic science education from youtube videos! bunch of lazy IDIOTS with the attention span of a ferret on meth. PLEASE, READ A FUCKING BOOK! try this, if you DARE... www.amazon.com/Natures-Building-Blocks-Z-Elements/dp/0199605637/ref=sr_1_1?s=books&ie=UTF8&qid=1504311640&sr=1-1
@ourewallerbub2323
5 жыл бұрын
@@diaztriwardhana3077 yttrium is also an element
please do a video about nitroglyceryn
i love the way you say "rare earth metal".
I enjoy your shows. Could you please do a show on Radon gas. Thanks
Great video, please cut the backing track.
@user-rg7ru3lo9w
6 жыл бұрын
Intrinsic Body y
Thank you for your Videos, i love your channel
Do Gundanium next.
superb
Periodic table is interesting to me fo r observed you're channel.Rajib India.
Thank you for sharing this information on a easy understanding way PS, I bought Gallium.
I hope this channel becomes active again
3:39 Ah yes, Catium
can you do a video on francium
I like the voiceover. Sounds just like Borat! And don't get me wrong - I really like it!
Wait, you said 50 dollars for a 10 gr ampoule? Sounds a bit expensive cause I bought for about 17 euros! Great video and channel, time to subscribe!
Like the accent 👍 Are you Australian ? 😎🇬🇧Oi
I wonder what would go faster, the solarsail or a sail made from this.
I love you channel
Seems like you could make an effective low temperature thermal switch with it.
Title could have been better, but otherwise a pretty good video.
Very nice kitty!
Do video about Plutonium
why you always change the name of the channal? by the way, really like this series and your accsent!
lol the cat at the end
what avout a video on HHO gas
i kinda want a chunk of that for reasons lol
1:40 Are there acids that arent acidic?
I forgive you though, so I'll still subscribe. Good vid
what is the use of slowing down light?
#schönen#episode episode Full#vielen dank
what is magnetocaloric principle
Nothing in the universe can change the speed of light, it is truly constant
water slows the speed of photons Water- A Liquid that SLOWS The SPEED OF LIGHT!
@lor8olo
7 жыл бұрын
DJ Nubley actually... like, it does not slow down, just takes a longer path. Light allways travels at c. I am fun at parties
@supertubemind
6 жыл бұрын
Takes a longer path! LOL! Like it travels from A to B via NewYork instead of Washington or or a wormhole or something? If the decrease was due to collisions with particles, then the speed would be random as some photons would bounce around for ever and ever and some lucky photons would pass straight through.
@lor8olo
6 жыл бұрын
Thats just what i said, yeah, it collides with particles, but it does not slow down, it deviates, and as you said, it bounces around, but no, photons don't just pass straight through, if they did so, there wouldn't be refraction, the light would dim after passing through. So between bounces, light goes at c. This is a pretty well-known thing, just google it (and yeah just like the example you said, via NY instead of DC)
@justanotheruser6468
6 жыл бұрын
Loreight Olo it does slow down. Look it up the speed of light is given in x meters per second. Bouncing around will not change the speed but just make it a longer distance
You have great and very informative videos. Your English accent however is not very good and I don't understand everything. I may be the only one who have problem with your accent. If I am not please create English subtitles. It will help a lot all of us. Keep the excellent work.
"no u no a lyttle bit aboot other metal" That's the only thing I understood from this whole video...
pls make Yttrium
@kaustubhkishore497
7 жыл бұрын
Electroimpex by any chance you got to know that name from a video with lots of experiments where the dude tells about yttrium erbium terbium
@johnmichael1594
6 жыл бұрын
get a book! what kind of lazy illiterate clown goes to youtube to get an education?
@supertubemind
6 жыл бұрын
There are plenty of useful educational videos on youtube, many put up by teachers and university professors. You need to chill out. Not everything comes in a paperback copy.
Technically anything that refracts light also slows it down. Glass, diamonds, air... Basically anything but a vacuum that is transparent.
0 disslikes, good job, and hey thosoi, where did you study was it in tartu, estonia?
colored liquid also slow the speed of light(galium liquid,mercury)some are block
make video on Mn.
... music at the end of video is creepy loud!
OK so you can make a kind of glass with a very high refractive index. Cool. But slowing the speed of light by passing it through a material of high refractive index is not ALL CAPS-worthy exciting really.
Green - my favorite color
1:14 What's the misty stuff spraying out the top of the liquid? It's fun to watch
@jonasstrzyz2469
7 жыл бұрын
I reacts with HCl to form Hydrogen gass, the gass, then bubles out and "brings" water with it.
@voopu
7 жыл бұрын
According to the chemical formula shown at 1:05 it is pure Hydrogen.
@jonasstrzyz2469
7 жыл бұрын
Pure Hydrogen is a coulorless gas, so it must be cariyng water with it, otherwise it would not be visible.
@coryman125
7 жыл бұрын
That makes sense, considering also that hydrogen gas wouldn't fall back down like that. I just found it weird, as I've seen lots of metal react with HCl and I've never noticed that happen before
the stuff u get when u turn on subtitles
воу , я даже и не знал что к него есть 2 канал
@wobeck
7 жыл бұрын
Плохая грамматика. Как правильно писать: Я даже и не знал, что у него 2 канала.
do gallium
10g Pr in ampoule only costs CNY35 on Taobao.
H2O - a liquid that SLOWS THE SPEED OF LIGHT!
@sthamansinha977
6 жыл бұрын
Dibbi Barua yes really
@alexander1989x
2 жыл бұрын
Literally every non-vacuum: Slows speed of light.
dad is here
@supertubemind
6 жыл бұрын
Dad is a square?
The speed of light doesn't change
Have you done thorium ? If not ,you should.
i like ur accent
Sodium slows down light a lot too
I had the same looking cat like the one at the end... :(
All matter slows the speed of light!
It doesn't slow light it just makes light travel longer it's a hard concept same with water
i love to watch ur videos while smoking weed
@kuskus_th13
7 жыл бұрын
why are you smoking weed
@philthy122
7 жыл бұрын
The more important question is why aren't you!?
patreon is all over the place How many pple are u?
All materials that light can pass through will slow the speed of light.
the cat is cute
о боже этот акцент... это произношение...
I wish you didn't have such a heavy accent. It makes it very difficult to understand what you are saying. Other than that, I do enjoy your videos.
the cat is beautiful
WATER - THE AMAZING SUBSTANCE THAT SLOWS THE SPEED OF LIGHT!
But Pr is Promethium. as i know
You know, magnets aren't the only thing that are ruined when you heat them up.. you also ruined the end of that knife.
Unocotiom
hey guys guess what else slows the speed of light a glass prism...and water... not to exciting is it . . . poop . . . m y - d i c k - f e l l off lol did u manage to scroll down this far?
lol, anything outside of a vacuum slows the speed of light.
Do Gadolinium or Rhenium. They both have very peculiar properties.
i guess 114 people hate Praseodymium