Hank getting so excited about the topic that he has something to add off script is probably my favorite part.
@chursius91127 күн бұрын
Hank, I'm a researcher at Oregon State University developing a diagnostic assay for Agrobactetium tumefaciens (bacteria causing crown gall disease) using a CRISPR-based technique that acts almost exactly how you described in your "off script" bit. It was very cool to hear you talk about that!
@barrydysert29747 күн бұрын
About 15 years ago i was involved with a raspberry planting operation. We were pretreating our rootstock with Agrobacterium, the non-crown gaul inducing kind, with the goal of out competing Your bad boys. It was reasonably effective. It's a marvel to me to have randomly found Your post about having a career studying this disease !:-)
@TheKrispyfort6 күн бұрын
Um, mate, I am assuming you meant to say you're working on an "assay" and not an "essay" to detect the agro-whatever my area was endocrinology and TBI means I've already forgotten the rest of your targeted lifeform - soz. Unless, you have designs to develop a detection essay, in which case how is the subject supposed to read the essay, and are you going to be using laughter or snoring as a positive result? Detection essays 😂 (sorry, it's been stressful, I'm tired and so I think I'm a comedian. I'll go to sleep now. Good luck with your research 🎉)
@TheKrispyfort6 күн бұрын
Question: how does the level and intensity of direct and indirect sunshine affect the capacity of the agrobacterium (I remembered! yay)? I ask because the sunshine that raspberries are exposed to here in Australia is a very much different beastie to the northern hemisphere sunshine. A lot of northern hemisphere full sun plants have to have partial shade here or they don't do so well
@TheKrispyfort6 күн бұрын
@@barrydysert2974 there's possibly some microbiome action going on for the roots of the plants
@chursius91126 күн бұрын
@@barrydysert2974 What a coincidence! Thank you for sharing! Another one of my research endeavors was testing a naturally-derived product that prohibited crown gall formation at sites of infection with Agrobacterium, and as part of my background research, I read about exactly what you described above. A fascinating little bug, for sure!
@renocence4 күн бұрын
Hank looking like he's about to go super Saiyan during that off script moment. You see the energy of knowledge building inside of him, hearken all who enter here.
@OMGitshimitis7 күн бұрын
For those who are interested the reason Phosphorescent chemicals release light over a longer time is that the different energy levels the electron sits at in a Phosphorescent chemicals also have different angular momentums so to transition between the states requires more random luck.
@TheKrispyfort6 күн бұрын
5 points each. For sheer dumb luck
@AroundTheBlockAgain16 сағат бұрын
I will ponder this on the sleepless nights when I stare at my nightlight (a glow-in-the-dark frog that seems to glow aLL NIGHT)
@annekeener41198 күн бұрын
Fluorescence is also used for multiple microscopy techniques and molecule labeling tricks. GFP is green fluorescent protein and it is commonly used to label molecules. Fluorescence resonance energy transfer or FRET literally uses the fact that fluorescent molecules release lower wavelengths of light to test if two molecules are interacting by having one molecule with a label that excites a a specific wavelength of light and emits light at a wavelength that will excite a molecule with a second label, creating 2 different colors that can be detected if the molecules are in close proximity or directly interacting.
@AroundTheBlockAgain16 сағат бұрын
Oh sweet, they can bounce this energy around TWICE?
@cassandrakarpinski94167 күн бұрын
Fluorescence is also useful for analytical chemistry. A fluorospectrophotometer can be used to determine the quantity of a fluorescent molecule within a sample (sometimes with a standard curve for calibration). It differs from standard spectrophotometers by having the detector and source set to different wavelengths (in spectrophotometers, these are set to the same wavelength and the change in intensity gives the absorption, and thus we can calculate the concentration). The sample absorbs the source wavelength and then the detector measures the intensity of the fluorescent wavelength to determine the concentration (which is where the standard curve comes in. By measuring known concentrations of the molecule in question we can plot a graph, then utilise the line and/or formula of the line to convert the fluorescence of the sample into a concentration)
@BanjoGate8 күн бұрын
More 'not in the script' stuff! I like the way you present when not reading off the teleprompter!
@gabbysmith75797 күн бұрын
That’s what hanks channel is for
@christophergilgour7145 күн бұрын
Have there been studies on the long term exposure to blacklight & phosphorescent light? I work in a specific industry where i have been working exculsively in black environments, lit only by phosphorescent light. This was months of exposure, day after day, for upto 15 hours per day. Personally, i specifically noted very intense colorful dreams of varied content over that time. I cant speak to other psychological changes, but specifically dreams were extreme.
@CrossStCroix7 күн бұрын
This episode _rocked_ . A _shining_ example of SciShow content
@Mikearice18 күн бұрын
It doesn't have to be ultraviolet light to cause emission. It just has to be a higher frequency. Violet and blue light will make green and red fluorescence work. You can test this with a violet 405nm or a blue 455 or 445 nm laser. (none of those emit UV light) but they all work. Just point them at different colors of fluorescent paper and see if you see a different color than the laser. A red laser won't make anything fluoresce, however. A green laser will work on orange or red fluorescent paper.
@MrNicoJac8 күн бұрын
Do you know what happens to the additional energy? :) Like, a photon of XYZ wavelength hits a surface/molecule, all of its energy is absorbed to make the electron jump up a (few?) tier(s), and then a tiny moment later the electron emits a photon of XYZ-ABC energy (meaning a longer wavelength), which we perceive as fluorescence because it's got a different color. Where does the ABC part of the initial energy go? 🤔
@alexbrewer99308 күн бұрын
Well, a red laser can probably make things fluoresce, it just won’t be in a wavelength we can see 😢
@Samu2010lolcats8 күн бұрын
@@MrNicoJac IIRC when a fluorescent material absorbs a photon, the electron jumps up two (or more) energy levels at once. Then the electron jumps down each level individually emitting a lower energy level photon each time. So for every high energy photon you get two or more lower energy photons.
@PJ-oe6eu8 күн бұрын
@@Samu2010lolcatswill the energy gained of the electron that shot up a few levels always be divisible by what it losses going down levels? If not then what happens to the leftover energy?
@franck32797 күн бұрын
In non-visible range, X-ray video machines use UV CCD coated with Xray-absorbing material.
@grumblefkitty6 күн бұрын
fluorite was already my fav mineral. i knew some of this, but not the medical applications. this is awesome!
@cachecow8 күн бұрын
I prefer the soft glow of radium in my watches and dyes
@gabbysmith75797 күн бұрын
My jaw fell off reading this 😢
@Boolarramob367 күн бұрын
That goes on my cereal. I look directly at the sun to tell the time!
@MaximumBan7 күн бұрын
@@gabbysmith7579 I hope 99% of Hank's viewers will get this "joke". [hint: Playing golf was never so decaying]
@gabbysmith75796 күн бұрын
@@Boolarramob36 wait a minute 🤔u might be onto somethin
@SmilesBot6 күн бұрын
After having an artificial lens put in my eye to address a juvenile cataract (T1 Diabetic), that eye now sees slightly past the normal visible color spectrum. I see more purples and blues in that eye and more than other people, but here’s the really weird part: a black light looks light a normal fluorescent light to me, just with a hint of lavender color. Most things don’t glow the same way either unless I close that eye and look at it with only my natural lensed eye. Makes cosmic bowling really trippy.
@MorganBondelid2 күн бұрын
This is fascinating! If you are an artist or photographer, it would be cool to see what your world looks like. Especially having both kinds of vision.
@pg2826Күн бұрын
I am surprised to learn that the other components of the eye and the brain are capable of processing that extra wavelength
@AaronGeo8 күн бұрын
My body after licking some weirdly green clock hands:
@v.xien.8 күн бұрын
Or brushes with radium
@mattressbordi8 күн бұрын
@@v.xien.makes the brush sharper
@ArchFundy8 күн бұрын
Many of the gals who painted the radium dials on watches and clocks died of cancer in their mouth area. They used to lick the brush tips to keep them sharp.
@lashadi14458 күн бұрын
Lol shtaaahp... if you stop eating that radioactive paint, I'll stop eating all the old oil paint I found in a box. Mmm...Naples Yellow...
@victoriaeads61267 күн бұрын
Ohh, your bones are gonna glow even after you die if you've been licking radium 😬
@makego8 күн бұрын
It's also interesting to note why fluorescent materials "pop" more under sunlight. Other materials are reflecting a certain amount, but a fluorescent surface next to them is both reflecting visible spectrum and radiating _more_ visible light energy that it's grabbing from the UV domain.
@ellieshine5 күн бұрын
I use sodium fluorescein on people's eyes. When stored dry, it's orange. When hydrated, mixed with the tear layer on a person's eyeball, it looks yellow. When illuminated with blue light, it glows green. Very useful for assessing the fit of contact lenses, or for highlighting dry patches on the eye!
@MorganBondelid2 күн бұрын
This is fascinating! I always wondered how that stuff looks from the other side.
@jacobekker4 күн бұрын
I had a retinal detachment that ended up resulting in having my lens removed. Now I can see in the UV spectrum, which made the dark rides at Disneyland very interesting!
@Add_Infinitum7 күн бұрын
5:59 I thought he was about to say "and THAT'S pretty cool."
@JoeC926 күн бұрын
Love that guy's stuff haha
@zacharydefeciani78906 күн бұрын
This set is giving Technology Connections
@rainbowslinkies7 күн бұрын
"glow in the dark stars in your childhood bedroom" ...yes, my childhood bedroom wall only 🤣
@jjmetrejhon17437 күн бұрын
1:17 I have subtitles so I knew the punchline but Hank's delivery still made me laugh out loud
@ThomasForthewin7 күн бұрын
You gotta give some probs to the SciShow set designers. I love this set style with the table, it gives off a kind of D!NG/Hankschannel vibe which has this casual tone, that makes it feel so much more casual, personal and friendly, but it's still set up so professionally, with the props the lighting and the color palettes, which make it very pleasant to watch and give room for cool object demonstrations like with the fluorite crystal. (Although this is surely also to showcase the advertised product which doesn't lesser the demonstrative value though) From a teachers perspective this set design is such a didactic masterpiece!
@Splizacular8 күн бұрын
Videos about light brighten my day!!...my apologies, my dad joke funny bone had a spasm 😊
@existenceisillusion65287 күн бұрын
In 2014 Stefan Hell and others won the Nobel in chemistry for (IIRC) stimulated emission depletion stochastic reconstruction florescence microscopy. I remember because that same year, 2 researchers out of UC San Diego developed a silver based meta-material that directly overcame the diffraction limit.
@TheKrispyfort6 күн бұрын
I used to know what all those words mean I miss lab life 😢
@BuildinWings8 күн бұрын
People without a lens (aphakics) can actually see this kind of light directly, with no refraction. It's described as purple sunlight.
@MrNicoJac8 күн бұрын
Omg.... How bad would it be to lose a lens? I'd lowkey wanna test it out before I die, just to know :/
@TheMooseNextDoor8 күн бұрын
Neat
@evanburke4998 күн бұрын
I was born with a cataract in my left eye they removed the lens when I was only a few days old. I'm legally blind in it but have always liked the way black lights look through it.
@dandoriii28428 күн бұрын
This ability was used (allegedly) by the French underground to fight the German occupation. Young German soldiers patrolled the shore lines. When the resistance wanted to bring in materials and people from the sea, the boats at sea at night would signal with UV lights. Watchers on the coast included older people who had cataract removal surgery. Without the lenses, they could see UV light. People with lenses couldn’t. If no patrols were nearby, the “coast was clear” and the offshore boat was cleared to approach.
@gabbysmith75797 күн бұрын
@@MrNicoJaclet me know also can I have the lense when you’re done I’ve always wanted to try one before I die, I feel like it would be like a umami gummy candy 😂
@troydorr48672 күн бұрын
Hank is by far my favorite host of SciShow! You rock Hank!
@Adventurealliancekerala7 күн бұрын
Fluorite was just minding its business as a crystal, and now it’s a blacklight celebrity. What a flex!
@Autistic_Artist8 күн бұрын
As a fluorescent artist, there is a lot of science behind the art. First in responce to glowing white t-shirts its not the material that glows its actually a fluorescent dye in detergents that "make your whites whiter". One of the fascinating things about fluorescence is the glow is coming directly from the atoms instead of reflecting off an object. So you are painting with light. I have a video where i mixed red, green and blue black light paint to make white! Well almost.
@Paarthk7 күн бұрын
How long did it take you to become fluorescent?
@Autistic_Artist7 күн бұрын
@Paarthk depends on how many body painters I'm working with, 😆
@TheKrispyfort6 күн бұрын
Detergent explanation. YES!!
@ScaerieTale8 күн бұрын
"I never thought I would relate so much to an electron." Big. Monday. Mood.
@elleb7512 күн бұрын
This is amazing. Truly the problems we want to solve, a problem that has and will continue to exist for a long time. A product to last a lifetime. You said you might not sell the actual chair as a product, but if you had plans for the chair, I would buy those plans. Cost of plans + materials purchased myself still more worth it than going to any bog box furniture store.
@victoriaeads61267 күн бұрын
PBS SpaceTime made a glow in the dark shirt for the April 2024 Solar Eclipse. It is printed with the phases of the eclipse. I wore it on Eclipse Day, and it was glowing during totality!!!!!!
@feeberizer7 күн бұрын
I had blacklights back in the 60s when they were all the rage. We turned off all the lights one evening and my mom and dad and I wandered around the house seeing this new view of our world. Then we got to the kitchen. Mom was furious seeing stains all over her "spotlessly" clean stove. And, when I looked at her teeth... Well, you could see all the dental work she had which made her even more furious. Oops! Blacklights were relegated to the attic after that. 😂
@Daniel271827 күн бұрын
the part where he laughs about his son
@MichaelWalker-hh2xp8 күн бұрын
🎸 relation: playing rhythm, and wanting to bust out that solo!
@TheKrispyfort6 күн бұрын
And, thank you SciShow Team for sharing this with us ❤
@jasonseymour42356 күн бұрын
Figured it was worth pointing out, fluorescent bulbs glow due to both fluorescence and phosphorescence. This is why they actually continue to glow for a moment after being turned off. Fluorescent tubes have mercury vapor, which glows due to fluorescence. They also have phosphors. Excited by the orange glow of mercury fluorescence, they begin to glow due to phosphorescence. This phosphorescence is what gives fluorescent tubes their color, rather than the harsh orange mercury provides. The phosphors used typically only continue to glow for mere milliseconds to seconds by design. You don't want them to keep glowing long after you turn them off, of course, but the fact they do continue without additional energy makes them phosphorescent as well. To clarify, this phosphorescence is not the occasional flickering you might see after turning a bulb off. That's just the ballast discharging stored energy, although these flickers can extend the glow from the phosphors.
@sydhenderson67537 күн бұрын
Blacklights are useful for finding scorpions since their exoskeletons are fluorescent. Phosphorescence is partly responsible for the discovery of radioactivity. Henri Becquerel was investigating whether phosphorescent materials emitted X-rays. (It made sense at the time since people were trying to figure out how x-rays work.) The material he chose happened to be a uranium-containing metal. (Several uranium salts are phosphorescent.) After several cloudy days, he decided to develop a photographic plate the sample had been sitting on, presumably as a control. He discovered that the sample emitted radiation even when not exposed to light, The rest is history.
@EmilyJelassi8 күн бұрын
Such an interesting video.. thank you!!😊❤
@MikkellTheImmortal7 күн бұрын
A mineral that can emit phosphorescent light that most people are unaware of is diamond. They're classed as iib diamonds and can glow in a variety of colours including blue, yellow, red or green. They are naturally white and indistinguishable from other diamonds unless you use a uv light. The glow can last up to 2 seconds, depending on the structure of the crystal and it's inclusions. Other gems that glow brightly but are instead fluorescent are corundum (Ruby's and Sapphire). Lapis lazuli has inclusions that will glow a brilliant orange. And I'll finish off with calcite, which glows green.
@earlaker8 күн бұрын
I can hardly wait for my next Rockbox and light it up with my uvBeast V3 365nm! I've been waiting for this one! Some of my other Rockbox minerals or their matrix have also fluoresced. (Particularily the white matrix (I believe it's calcite) on the pyrite crystals from Ojuela, Mexico [May 2024], which fluoresced a bright pink/red!)
@overtoke8 күн бұрын
i have a real flouro tube blacklight. when i was much younger i could not help notice, as i held the bulb a quarter of an inch away from my eyeballs, i could see things "swimming" i had no explanation at the time, but it occurred to me years later, that they must have been bits of cells within my eye fluid.
@franck32797 күн бұрын
There’re usually called floaters. But by doing that, you damaged your vision by giving your retina sunburns.
@overtoke7 күн бұрын
@@franck3279 yes, i have a persistent daytime "floater" it does not "swim" it's in a fixed position. it's a bit irregular shape, not a dot, and out of focus. the "swimmers" in the black light appeared to be inside the light itself. i.e. not out of focus, hundreds of individual points darting about. they did not seem to react to eye movements (sloshing?). i also don't think a black light is harmful. UVA
@NeonPreservation5 күн бұрын
sounds like you're describing the blue field entopic phenomenon, aka "blue sky sprites": en.wikipedia.org/wiki/Blue_field_entoptic_phenomenon
@overtoke5 күн бұрын
@@NeonPreservation omg - thank you! this makes sense. "The dots are white blood cells moving in the capillaries in front of the retina of the eye."
@NeonPreservation4 күн бұрын
@@overtoke youre welcome! it kinda blew my mind when i first found out what they were, i figured someone else might like to know too! :)
@PLuMUK548 күн бұрын
I could do with a black light shining on me - it's been ages since I've been excited 🤭
@Rubrickety7 күн бұрын
3:27 I like to imagine George Gabriel Stokes had a high squeaky voice to go with that visual.
@Trag-zj2yo7 күн бұрын
I used for years as a quality control inspector looking for surface flaws on metal components.
@3800S15 күн бұрын
I used not just fluorescence but also phosphorescence to identify a mystery mineral crystal in my collection I was given some 15-20 years ago as variety of calcite, the unique colour a crimson/salmon red glow and bright after glow that lasts a few to several sec after being hit with a 405nm laser allowed me to pinpoint it to a type of calcite, where all other forms I have look nothing like it, nor fluoresce for the most part (some slightly purple/white), and none phosphoresce. I also found that only the local Australian opals do both, where the same looking opals from other counties don't do either. Also a tidbit of info. Hit most calcium or phosphorus containing minerals with a xenon flash like that of an old camera, they phosphoresce for a sec or two in the classic glow in the dark green, including your TEETH! But I have not been able to replicate this with UV, even with an intense source like a UV laser, so the xenon lamp seems to have that same pump effect used in old ruby lasers etc...
@justayoutuber19068 күн бұрын
This video fluored me.
@crimsonraen7 күн бұрын
Soooo heckin' cool!
@astralb.26477 күн бұрын
Fluorite is my favourite crystal, especially the green/purple banded variant
@MaximumBan7 күн бұрын
Is meth fluorescent?
@victoriaeads61267 күн бұрын
Opossums glow magenta under blacklight. You're welcome 😂
@monzpush93547 күн бұрын
0:16 Fluorite is CaF2 .aka. Calcium Fluoride
@monzpush93547 күн бұрын
Bone is 20% Calcium...
@monzpush93547 күн бұрын
4:33 1:50
@vanessaryan31037 күн бұрын
Don't forget lichens! Some species glow under UV light. They glow lots of different colours - I've seen blue, yellow, orange, pink and red. It's actually one of the features lichenologists used to identify them.
@robertfindley9217 күн бұрын
People use UV light to look for yooperlites, fluorescent rocks, at night along the coast of Lake Superior. They were formed around a billion years ago when volcanic activity created pockets of fluorescent minerals within cooling lava.
@SB-qm5wg6 күн бұрын
flying squirrels under a black light are wild
@leviholt45577 күн бұрын
Oh hell yeah my favorite stone!
@bettyswallocks64113 сағат бұрын
3:28 How long after 1852 did portrait photographers start telling their subjects to smile for the camera?
@romulusnr7 күн бұрын
I bought a Techmoan T-shirt and I had no idea it was glow in the dark until I wore it to bed and I could see under the covers.
@rodrigorocha55867 күн бұрын
Is it the same principle used in crime scenes ? Because if it’s the case we can thank that crystal for a lot more
@skybluskyblueify7 күн бұрын
Stokes's ideas as to what would cause this glow would be interesting to hear, but I am a science-history fan, so I understand things need top be cut or not even mentioned. Boy did early-modern scientists and modern scientists early in the modern era have wild ideas. Yikes.
@gmsherry19537 күн бұрын
I am unexpectedly confused. I'd never heard that an excited electron emits a lower-energy photon when it returns to its original orbital (which means, obviously, I had no idea how fluorescence works). But ... doesn't a reflection in a mirror also entail atoms absorbing and emitting electrons? I just got through trying to research this, and for mirrors, sources talk about light as a wave instead of a particle, but of course it's always both, so how do photons bounce off a mirror? Aren't they absorbed and emitted by the silver (or whatever)? If so, why don't mirrors change everything's color? If absorption and emission makes ultraviolet into purple, why isn't the reflection of a blue object green and why don't red objects disappear entirely?
@lunkel81087 күн бұрын
Refraction and reflection of light do not involve absorption. Absorption and re-emmission would result in light going off in random directions and in both refraction and reflection the angles are clearly not random. We can understand them pretty well using just the classical classical wave theory of light. Light consist of wiggling electric and magnetic fields, which wiggle the charges present in materials, which in turn cause the electric and magnetic fields to wiggle in different ways, causing refraction and reflection. The channel 3Blue1Brown recently made a series where they try to explain the process visually.
@gmsherry19536 күн бұрын
@@lunkel8108 Thanks. I'm still not sure I understand, but you did a good job. I agree about the "random directions" thing--I guess I thought there must be something special about silver and other materials used to make mirrors, that they don't emit in a random direction? It's amusing to me as a layman that, in effect, we can pick and choose whether light is a particle or a wave, depending on which makes for a better explanation of a particular phenomenon. Thanks for the referral to 3Blue1Brown.
@macaylacayton29157 күн бұрын
A common form of fluorescence used for medical imaging and cellular imaging is indeed Indocyanine green, but also GFP or green fluorescent protein which is found in jellyfish. Sorry the biotechnology part me had to bring it up
@ernmalleyscrub6 күн бұрын
Fluorite is not just a pretty facet, but a hard working medical and industrial ingredient….
@Vort_tm6 күн бұрын
Every time I see your Rocks Box episodes I so badly want to sign up. I need to organize my house so I can collect rocks without looking like a hoarder. UGHHH
@ZackRToler7 күн бұрын
I'm in my 30s and there are those green stars and planets above my bed. I didn't put them there. Someone's kid did from whoever was here before me. But I like them so I never bothered to take em off
@AroundTheBlockAgain16 сағат бұрын
Dance, electrons, dance!
@Moleculor7 күн бұрын
1:30 Wait, what are electrons using energy to drop energy states for? Where does the used energy go?
@PrefaceofDysphoria7 күн бұрын
Hoping i understand your question correctly, it has to do with the amount of energy to overcome the states, releasing the energy as light. this process is known as quantum leap.
@alacranberryy7 күн бұрын
Aaaa the glowing review lol
@fruit31937 күн бұрын
Hank’s poor son! Let him sleep, phosphorescence!
@NthMetalValorium7 күн бұрын
Hank: "Jesus christ marie they're minerals"
@tomhossain20995 күн бұрын
Ok how do fluorescent materials absorb and emit at different energies? It’s my understanding that absorption and emission spectra are complimentary because electron energy levels, like all quantised energy levels, are discrete.
@lunkel81085 күн бұрын
There are plenty of ways for an excited species to lose some of the energy to its environment in the time between absorption and re-emission. To give just one example, one of the most important processes is vibrational relaxation. When a molecule absorbs a photon, that energy can not just raise an electron to a new energy level but also cause the molecule to vibrate. This vibrational energy is however often very quickly lost to other particles around it as heat, which leaves the molecule with less energy to re-emit. An excited molecule can also only radiate away some of its energy, leaving a little bit of vibrational energy behind (which is then quickly lost).
@mindex_4 күн бұрын
We are blushing😉. With ❤, the Min*Dex team.
@ExburneLightDarkness7 күн бұрын
Guess I should drink a few gallons of radioactive paint… for science!!!
@pretzelbat.mКүн бұрын
How about biofluorescence? Such as in scorpions?
@TheKrispyfort6 күн бұрын
Fluorescent immunohistochemistry 🥳
@LordBrittish7 күн бұрын
Arnold: *It’s not a tumor!*
@rudolphrobbertze7927 күн бұрын
How do electrons use the energy? I was hnder the impression that it can jump up two e ergy levels then drop back one at a time releasing photos of longer wavelenght.
@lunkel81087 күн бұрын
No, that's generally not how that works as far as I'm aware. Light can't just excite electrons between energy states but also confer vibrational and rotational energy to the molecule that absorbs it. So a molecule can absorb light that has enough energy to excite an electron + enough energy to cause it to "wiggle" a little bit. Some or all of that vibrational energy is however often very quickly lost to other molecules around it as heat. Thus, when the molecule re-emits the light, it does so at a lower energy. These processes can also occur in the opposite order: The excited molecule re-emits light with the energy of the electronic transition but leaves some vibrational energy with the molecule, which is then dissipated as heat.
@rudolphrobbertze7927 күн бұрын
@ thanks. I learned something new
@lunkel81087 күн бұрын
@rudolphrobbertze792 There's also an additional effect that happens in polar solvents like water. If the excited state has a different dipole moment than the ground state, that can result in an electric force on the water molecules, causing them to rotate to align with the new dipole moment and again leading to the molecule losing energy to its environment. We can actually make use of this to for example tell whether a fluorophore on a protein is exposed to the water or hidding in the less polar inside of the protein, which can tell us something about the protein structure (though this is a pretty niche technique).
@rudolphrobbertze7927 күн бұрын
@ thanks. Definitely have to reopen a chemistry textbook or two. Really appreciate the answer
@grkuntzmd7 күн бұрын
Warning, kinda gross: George Carlin had a comedy routine in which he talked about boogers. He said that if they were fluorescent, you would have to walk down to your local head shop (where they sell paraphernalia for dr*g use) and wipe the boogers off on neon posters.
@mairoberts12477 күн бұрын
my room after lil bro has 3 seconds in it:
@jammbbs16885 күн бұрын
So in a round about way your saying someone with an astigmatism can visibly see more excited particles in light waves? Or is it just me thay the shorter the wave length of light the worse my eyes see it?
@LogicalThinking-p2s8 күн бұрын
Life itself seems a bit unnatural or example counter entropy. But gravity is counter entropy
@AdamShaiken7 күн бұрын
Pound rocks...
@janetf236 күн бұрын
I have an old but still really beautiful fluorite point pendant necklace that I call my dance necklace💃
@spilbee7 күн бұрын
I’m so blind.. I can actually see shadows of my eye cells. Not sure if it’s my eyes or my brain… but, I can see my cells.
@romulusnr7 күн бұрын
i know someone with an implant tooth and it *doesn't* glow in blacklight which is kind of a giveaway
@MrNicoJac8 күн бұрын
2:20 WOAH WHOA WOW Hank Not so fast....! You _just_ said a minute earlier that energy cannot be created or destroyed. So when the electrons use _some_ of the energy that they got, *_what happens to the rest of that energy???_* Like, it does not get converted to heat, right? Black lights don't make my clothes feel hotter, in my experience...
@mattduncil8 күн бұрын
Veritasium just did a video on rainbows. So if we placed a satellite with a really big black light aimed towards us and weather conditions were favorable could we make a black light rainbow?
@franck32797 күн бұрын
Fortunately (except for that particular purpose),our athmosphere is eather good at blocking UV light.
@mattduncil7 күн бұрын
@ ok so no black light rainbow then
@fungalcoffee7 күн бұрын
I have shirts that glow, very annoying to sleep in, its bright enought to be distracting but not bright enought to light the way when i need to pee at night.
@turquoisewitch.wild-owl8 күн бұрын
It's weird, but it looked like the "rock" you had on this show was amethyst. When I looked up "fluorite vs amethyst," this is what it said: "Amethyst is usually purple, but can range from lilac to lavender to dark purple. Fluorite can be colorless or transparent when pure, but can also be yellow, green, white, blue, gray, or black."
@woody40777 күн бұрын
"Glowing review" uuuuuggggghhhhhh
@BackYardScience20007 күн бұрын
The cool part about fluorescein is it can be easily found on eBay. That's actually what my profile pic is of.
@BracaPhoto8 күн бұрын
We all emit light apparently 🎉 PS - also the photon appears to be an EYE Go figure
@DanskerneFraDanmark6 күн бұрын
Wait you can’t see the light from an ultralight ????
@sooth152 күн бұрын
I can't believe you teased the entire video with that fluorite sample in front of you and then you did NOT SHOW US how it looks with a black light on it. Day ruined.
@cRazYhYPerPenGuin7 күн бұрын
when they treat mice for cancer, do they give the mice cancer first?? like are they just sticking rodents into a radioactive box and hoping for the best (worst)
@joepalmer15947 күн бұрын
It is not the T-shirt that is florescent. The detergent used to wash them with has "UV Brighteners" added. Hunters and military frequently wash clothing without the brightener added.
@Napoleonic_S7 күн бұрын
C'mon scishow, tell us an update on Hank's curvy hair situation!
@kellydalstok89007 күн бұрын
I remember girls’ white bras glowing under their tops in what was then called disco, but is now strangely called nightclub, even though a nightclub used to be the kind of place where scantily clad young women were paid to dance on a stage.
@Andre-qo5ek7 күн бұрын
is 365 or 395 better for finding scorpions? i saw somewhere that 365 might be better... but jsut wondering you knew.
@MariaMartinez-researcher7 күн бұрын
Time for a video about fluoride?
@vitgerivaz7 күн бұрын
Going by the thumbnail, I thought this video was about feds.
@MrOhitsujiza8 күн бұрын
I... I knew most if not all of this... Do i watch too many science videos?