One thing that's really cool about phosphorescence is that because the triplet to singlet decay is spin forbidden and the excited electroncs get stuck, in some cases the main way they flip back is by energy exchanges like collisions and interactions between molecules. These collisions happen faster at higher temperatures, which means the decay rate of the phosphorescence can be mapped to temperature and phosphorescent compounds can be used to measure the temperature of surfaces they are applied to, or gases if using small particles. This is a method called thermographic phosphor thermometry.
@DesertSessions93
Жыл бұрын
What applications would this be used in?
@BingusDingusLingus
Жыл бұрын
@@DesertSessions93seeing how how a rocket is as it flies?
@needmoreboost6369
Жыл бұрын
That’s interesting! at colder temperatures does it prolong the output time? and freezing temperatures?
@caffeinato
11 ай бұрын
@@needmoreboost6369 Correct that lower temperatures cause slower decay. There's a video from The Action Lab you'd probably enjoy where he demonstrates being able to induce phosphorescence in pretty much any material by cooling it with liquid nitrogen. Called "Making Cold Light"
@aSpyIntheHaus
25 күн бұрын
When I learnt that toilet paper was mildly phosphorescent it was a good day. What you have just described has answered something I have wondered about for a long time. Today is another good day!
@Tser
Жыл бұрын
At the Rice Rock and Mineral Museum near me they have a UV room and it's amazing. It is an enclosed room with an array of minerals on the wall. There's a lighting program that it cycles through -- full, UV, and dark. It's awesome as you see how they look in each and how the glow fades differently from each mineral!
@benbot5173
Жыл бұрын
I love that place! Have been going since I was a kid, drove by the other day and noticed it quite busy! Glad people are still enjoying it like I did!
@KnightsWithoutATable
11 ай бұрын
That sounds like a really cool display.
@ThatOpalGuy
Жыл бұрын
Thank you for "enlightening" all of us.
@RyanDCH
Жыл бұрын
Wow, that chemistry flex at the end. You lost me but it impressed the hell out of me. I'll take your word for it. I'm glad you're compelled to share your knowledge. I learn a lot from your videos. Thank you very much for the effort you put in. It really shows.
@genuinetuffguy1854
Жыл бұрын
Thanks for including the visuals of atoms to show the change in electron orbits and how that relates to energy emitted in the form of photons. Good stuff! 👍🏼
@vidibites
Жыл бұрын
This is so cool. Has anyone made a necklace out of any of these rocks. or used them for natural night time lighting in a garden?
@CricketsBay
Жыл бұрын
Strontium Aluminate is a common ingredient in glow-in-the-dark paint.
@petevenuti7355
11 ай бұрын
I made a few shirts, It would be x10 more expensive to remake nowadays. Anyways, I was a walking nightlight during blackouts and a Halloween ghost for many years... One shirt had 9 octopi, 3 fluorescent 3 phosphorescent and 3 regular, so it looked like an animation of a hopping octopus as you cycled the light from light-uv-dark... Some minerals are only active in longwave uv and some only in shortwave uv. I wanted to use 3 or four reds and oranges to make a 3d animated flame effect for my car , but the shortwave red would have cost hundreds of dollars per square foot so I couldn't do it. Now just the strontium aluminate could cost that much if you want a deep solid long lasting glow. God only knows what the shortwave only red costs now!!!
@Tattlebot
7 ай бұрын
You can buy pebbles from suppliers as either glass or polymer. You could also paint your walls with it as it creates a sort of "light battery". Even though it becomes dim after 6h, the sheer amount of area in a painted room produces a surprising amount of light.
@ladyofthemasque
Жыл бұрын
You are amazing. You explained chemistry just as easily and accessibly as you have explained geology. Thank You!
@Jefuslives
Жыл бұрын
You want to see something really cool? After charging that with UV light, hit it with an IR LED and be amazed by what appears to be a "dark emitting diode"
@votpavel
Жыл бұрын
will do thanks
@fredfred2363
Жыл бұрын
Also known as watchmakers Lume. Super Luminova, C3 or Lumibrite are the commercial names of the powdered minerals, that you mix with a glue or resin before painting into a watch dial 👍🏻
@DanielBerke
Жыл бұрын
The color looks exactly like the powdered pigment called "Blue Lit" from the artist supply company Culture Hustle; I've used it in a few paintings, and it charges best with UV light and glows for hours, even in merely "dim" conditions.
@Tattlebot
7 ай бұрын
You don't mix it with colored resin.SrAlx comes in different ratios and crystal structures, producing different colors.
@lairdcummings9092
Жыл бұрын
One of the most clear explanations I've seen, in many years of dealing with the subject of Fluorescence and Phosphorescence.
@allthingsdestructive
Жыл бұрын
PhD chemist here. I liked the description of the mechanism of phosphorescence but would include that the rate or quantum efficiency of intersystem crossing between singlet and triplet spin states AND the quantum efficiency of the triplet state decay determines how long it will glow for. Fluorescence is fast compared to phosphoresence due to the excited electrons not needing to change spin (singlet to singlet) states, as you mentioned.
@therealmatthewsmith
Жыл бұрын
The forbidden transition from singlet to triplet violates hunds rule of maximum multiplicity. Being forbidden by quantum mechanics does not mean that it does not happen, just that it takes a long time when it does.
@5610winston
Жыл бұрын
How does _phosphorescence_ differ from _tenebrescence_ ?
@TheTibetyak
Жыл бұрын
Non PhD person here. Oooooooooo - pretty rocks!!!!! Is this how we got the term "rock show"?
@raikuthedragon3907
Жыл бұрын
Yeah I’m over here just wondering where do I get one
@suprememasteroftheuniverse
Жыл бұрын
PhD chemist? But you can't even tell if you're a boy or a girl 😂🤣🤦🏻♂️👏🏻 c'mon
@huntermossakajunkerman9646
Жыл бұрын
Now I know what to paint my semi trucks with!
@TheSpaceEnthusiast-vl6wx
Жыл бұрын
Thanks! Both Phosphorescence and Fluorecence are very beautiful!
@LadyAnuB
Жыл бұрын
Phosphorescence was explained while I was in college (or I missed its explanation). Now I know what explains the difference between fluorescence and phosphorescence. (Adding spin change to electron excitation.)
@pattiklaus9580
Жыл бұрын
Great research and presentation!
@Teehashee
Жыл бұрын
been watching since you started but this is a great video
@Veeger
Жыл бұрын
Very interesting! Thanks.
@aoilpe
Жыл бұрын
I like this content ! Thank you for the explanation…
@linkly9272
Жыл бұрын
Where did you get a chunk of it like that? I can only seem to find powder, and I would really like one haha
@fredfred2363
Жыл бұрын
He made it out of resin in a mold...
@GeologyHub
Жыл бұрын
I have a contact you grew this crystal and sent it to me. He will eventually be offering versions of these crystals on his online store, just not quite yet.
@miscellaneousanus2831
Жыл бұрын
Definitely let us know when that happens in a video. I would love owning something like that for so many applications.
@jcKobeh
Жыл бұрын
@@GeologyHubplease do a shout-out whenever that store opens, because I would love to have a piece like yours.
@regular-joe
Жыл бұрын
I enjoy your content and your presentation style, I'm always here for the volcano videos, I'm thoroughly enjoying these forays into related topics, too. Thanks😁👍.
@kirklaird8345
Жыл бұрын
Very nice explanation and graphics.
@ThomasWLalor
Жыл бұрын
I remember a college comedy skit about a carnival sideshow: "She walks, she talks, she glows in the dark, and crawls on her belly like a reptile!!!" A sorority performer in a costume with glow in the dark pigments painted on. Her helmet had horns the squirted water. Terrifying and mesmerizing simultaneously. And a real hit at the fundraiser.
@VE7QRZ
Жыл бұрын
Excellent!! Thank you.
@richardconway6425
Жыл бұрын
That was very interesting!! New facts absorbed ... I shall radiate them back at some stage.
@TroyRubert
Жыл бұрын
I have this stuff as top dressing for plants in my house by the windows. Love it
@LBCB94025
Жыл бұрын
I definitely want to go on a Yupperlite hunt!! 😁👍🏻🖤👏🏻🤙🏻
@OnTheRiver66
Жыл бұрын
Thank you for this video. Very informative.
@dizfoster
11 ай бұрын
I love the exploration of the ion responsible
@Creeper_123
Жыл бұрын
I actually saw a Twitter post about a ring that was made out of Strontium Aluminate, but it glowed a yellow instead of a cyan.
@brettmoore3194
Жыл бұрын
Light accumalators could be used in photonic circuits
@CYI3ERPUNK
11 ай бұрын
great video and quick chemistry lesson =]
@riverAmazonNZ
Жыл бұрын
Aluminate? More like illuminate amiright
@bag2963
Жыл бұрын
Loll you are xdddd
@GamingCeo420
Жыл бұрын
Arg arg arg arg 🦀
@raideurng2508
Жыл бұрын
Boooo
@reizinhodojogo3956
11 ай бұрын
melt it and its illuminati💀
@PieterPatrick
Жыл бұрын
I want to thank all the supporters of this channel.
@fen740
Жыл бұрын
Cant wait for the Geology Hub x Tyler Thrasher crossover!!
@lvlndco
Жыл бұрын
How's that made! It could make for interesting path markers. Maybe a small solar powered UV emitting light could be set up with a battery and some logic to keep the process going at a brighter level for longer.
@Tattlebot
7 ай бұрын
Chinese factories mix strontium nitrate and other precursors in industrial tumbling mixers, transfer it to 10l ceramic kiln vessels, top it off with a layer of charcoal, and put it in an oxygen controlled furnace.
@jasondavis1440
3 ай бұрын
Excellent.
@jjukijjuki
Жыл бұрын
Is this type of crystal naturally occurring or was this created in a lab? I'm having a hard time understanding if this is a man-made compound or if there are naturally occurring strontium aluminate crystals as seen in video games or Avatar. Do you know where the crystal in this video was sourced?
@TieDyeVikki
Жыл бұрын
Here's the answer he gave someone else: "I have a contact you grew this crystal and sent it to me. He will eventually be offering versions of these crystals on his online store, just not quite yet."
@aadarshv7422
Жыл бұрын
I was in search of content like this 🖤 thank you 🤝
@DrakoCrowley
11 ай бұрын
Are there any minerals that phosphoresce outside of the visible spectrum?
@justinpatterson5291
Жыл бұрын
Now I want a big chunk of super glowy blue rock.
@gardenfreshhome
Жыл бұрын
Theres others but I found this info The mineral scheelite, an ore of tungsten, typically has a bright blue fluorescence.
@maryfreeman3341
Жыл бұрын
I loved this video, thank you. Can any one suggest a good chemistry primer on you tube?
@tevrenendrigan1838
Жыл бұрын
CrashCourse Chemistry with Hank Green has you covered
@maryfreeman3341
Жыл бұрын
Thank you
@jesipohl6717
Жыл бұрын
it'd be real cool to do some taphonomy stuff about mineralisation .... keep up the alt content please!
@mr_lastname05
Жыл бұрын
Where can i get a hexagon of that strontium aluminate?
@lucasbauser
Жыл бұрын
I want this crystel now
@willlinke2849
Жыл бұрын
I want a very large piece!…how much?
@caerdwyn7467
Жыл бұрын
I heard "Strontium Illuminate"... and yep, I thought "appropriate".
@theComputerVoice
Жыл бұрын
hmm. I have some glow in the dark nail polish you could analyze too 😁 lol! I didn't realize before geology had so much chemistry in it, but it makes sense.
@10lauset
Жыл бұрын
Cheers to you.
@RoseNZieg
Жыл бұрын
that would be awesome to have when camping.
@staudtj1
Жыл бұрын
This would make a way cool automotive paint!
@frinoffrobis
Жыл бұрын
where can i buy some?
@CrunchRosey
11 ай бұрын
what happens if you microwave em
@petevenuti7355
11 ай бұрын
How do you reactivate the strontium Aluminate when in looses it's glow when it gets wet? (Normal Commercial glow products use an encapsulated powder pigment to make it water proof)
@NexVoidGaming
Жыл бұрын
We have a sphere of this, but didn't know what it was, we labeled it as random manmade.
@______IV
Жыл бұрын
Does shaping europium doped resin into a crystal shape make it a crystal?
@paulholleger8538
Жыл бұрын
I have a ring that glows with Strontium Aluminate!
@yoboi691
11 ай бұрын
Could this be possibly chemistry of light?
@GearGuardianGaming
Жыл бұрын
Makes me want to go out in the woods and catch a bunch of glow worms
@volcanoimage
Жыл бұрын
Really cool!
@RonSparks2112
Жыл бұрын
Is there a characteristic "half life" of phosphorescence specific to each compound. I understand that unlike nuclear half life, environmental conditions can change the rate of decay, but is there a general pattern analogous to nuclear half life.
@Is_This_Really_Necessary
11 ай бұрын
How can one acquire these light crystals?
@supertornadogun1690
Жыл бұрын
I used to have a pillow that did this, was pretty cool.
@jakeryker546
Жыл бұрын
Laputa! Castle in the Sky!
@Chop23
Жыл бұрын
You can also acquire one of these by successfully fending off a Luminous Stone Talus
@Lezzyboy87
Жыл бұрын
Stormlight for sure.
@reizinhodojogo3956
11 ай бұрын
what if u connect a small uv flashlight/laser to it and make it so when a switch is turned on it will send a pulse every some time, also a button to kickstart with some more time
@Tattlebot
7 ай бұрын
Good idea.
@rschiwal
Жыл бұрын
Pop quiz. Is there a substance that phosphoresces or fluoresces in infrared light? Would this be an effective cooling paint?
@terrylong8894
Жыл бұрын
Or could you use these in street lights instead of traditional bulbs or LED panels?
@__-lf4su
Жыл бұрын
IR does not have enough energy for electronic excitation as IR is effectively just heat. Fluorescence and phosphorescence require electronic excitations in order to occur.
@__-lf4su
Жыл бұрын
@@terrylong8894CFL bulbs actually use flourescent phosphors to generate visible light from UV light given off by Mercury Discharge Lamps.
@LadyAnuB
Жыл бұрын
@@__-lf4su IR is another wavelength of light but as you say it does not have enough energy to excite electrons in a atom
@raideurng2508
Жыл бұрын
@@terrylong8894 Strontium Aluminate is already used in low light path lighting and other uses where an electric light source is overkill or impractical.
@gideonevans9717
Жыл бұрын
Isn't Strontium radioactive?
@Tser
Жыл бұрын
Not this form of it. Strontium-88 is naturally occurring and stable, and not dangerous. Strontium aluminate such as this is considered inert and safe. It's used for all sorts of things. On the other hand strontium-90 is exceptionally radioactive and pretty much one of the most dangerous parts of nuclear fallout.
@b.a.erlebacher1139
Жыл бұрын
Strontium-90, an isotope produced by nuclear explosions, is radioactive, and particularly dangerous because strontium can replace calcium in bones. Naturally occurring strontium isotopes are stable.
@Dragrath1
Жыл бұрын
Not in general Strontium has 4 stable isotopes Sr84, Sr86, Sr87, and Sr88. However Strontium 90 is a particularly dangerous radioisotope produced as a byproduct of fission as it has a half life of 28.8 years meaning its long enough to persist for some time after contamination but small enough that it produces potentially deadly doses of radiation if in significant quantities. Small amounts of another radioisotope Sr89 have some use in medical imaging with their half life of 50.52 days or so
@ejonesss
Жыл бұрын
could this go on to make solar cells work even when it is cloudy and dark? adding the elements of the crystal to the solar cell material?
@brianhowe201
Жыл бұрын
Interesting idea. I wonder how much light it would absorb. If one layer was clear in front of the other.
@Tattlebot
7 ай бұрын
Unfortunately not.
@randydewees7338
Жыл бұрын
No mineral name for Strontium Aluminate? Has never been found in the wild????
@labaccident2010
Жыл бұрын
He does state it’s manmade.
@randydewees7338
Жыл бұрын
Yes, I heard that. It's just seems unlikely to me that this particular aluminate does not exist somewhere on this giant chemical crucible we call Earth. @@labaccident2010
@misplaced7858
Жыл бұрын
Is it possible to crush it down and add mix it with glass for a glowing teacup? It works with uranium, but this so much cooler and probably safer.
@miscellaneousanus2831
Жыл бұрын
Look up europium phosphorescent powder. You can get it in a variety of colors and it resists big temps.
@Tattlebot
7 ай бұрын
Yes, there are special formulations for glass blowing. Look up minhui pl.
@Mar1241-b7t
Жыл бұрын
Peanut butter is also phosphorescent, under UV. A 1W 405nm laser will provide a recreation of my experiences. Don’t ask how Or why I figured that out
@labaccident2010
Жыл бұрын
Whaaaat, really?
@LadyAnuB
Жыл бұрын
Does this vary by brand?
@myysterio2
Жыл бұрын
Technically anything that gives off heat after you warm it is phosphorescent cause infrared is light. A baked potato glows in certain wavelengths
@karhukivi
Жыл бұрын
Nope, that's incandescence not phosphorescence.
@grassnothing1631
Жыл бұрын
Sunlight
@you2angel1
Жыл бұрын
So the luminous stones in the Ledgend of Zelda Series for the Nintendo switch do exist! °~•.☆.•~°
@melgillham462
Жыл бұрын
We have areas in SE Ok. Where what we called "foxfire". Bark on trees that is shed after sunset and when hit with light would be infused with phosphorescent minerals. 😂
@CricketsBay
Жыл бұрын
Isn't the Strontium Aluminate radioactive?
@scarpfish
Жыл бұрын
Nope. Naturally occurring strontium, most of which is strontium-88 is perfectly stable. The radioactive isotopes are a synthetic result of our nuclear power and weapons processes.
@markiangooley
Жыл бұрын
More like strontium illuminate!
@ThatOpalGuy
Жыл бұрын
Would microwaving it work as well?
@Veeger
Жыл бұрын
Or irradiating it with nuclear?
@Dragrath1
Жыл бұрын
No microwaves have a long wavelength and low frequency(associated with energy) because of the quantization of light photons which have less energy than the minimum energy threshold to trigger an excitation can not induce an electron to jump orbital states. Gamma rays from radioactive decays on the other hand could cause this effect as they have sufficient energy to trigger the ion to jump energy levels. Incidentally form a historical perspective the discovery of this quantum property is what Albert Einstein won his Noble prize for in part because the Nobel committee considered his theory of relativity to be too controversial at the time.
@stev838
11 ай бұрын
Hg wells was right
@TheJohtunnBandit
Жыл бұрын
Yo, I need this mixed into a car paint
@filonin2
Жыл бұрын
Peanut butter glows with uv too.
@ChurchSleazy
Жыл бұрын
Ok now my question is how safe would it be to make tattoo ink with?
@raideurng2508
Жыл бұрын
It's used in glow in the dark toys and it's considered biologically inert. I'd still be very wary of it though.
@GodSpeaksInMath
11 ай бұрын
You mean Strontium... like...ummm...Radioactive Strontium...ummm... Im cool.
@wayneeligur7586
Жыл бұрын
Galen Winsor - What stopped plutonium economy kzitem.info/news/bejne/mYysratnrZ2FZIY You did show plutonium as a phosphorescence emitter, my question - is this somehow related to the[ see vid.] plutonium's 'blue flash point' where if two parts come into contact, then a 'surface fission event' happens, making a blue flash, and in some seconds after, deadly radiation is also flashed outwards, within a few yards?
@SocialDownclimber
Жыл бұрын
Nah that is due to nuclei changing their composition due to the weak nuclear force. Phosphorescence does not involve the nucleus of the atom, just the electrons surrounding it.
@wayneeligur7586
Жыл бұрын
Do you know the video that i'm talking about? - can you elaborate on this?@@SocialDownclimber
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