Invisible light will make 'Gold of the North' visible?

[@Muonium1]

Some recommendations: Many kinds of amber are not merely fluorescent but also phosphorescent. You can check by closing your eyes while the light is on and opening as soon as you turn it off. Putting the sample in the freezer, or better yet cooling it with liquid nitrogen will dramatically extend the phosphorescent glow lifetime by leaving the unpaired electrons in the excited triplet state stuck there without the availability to absorb thermal kinetic energy to flip the spin and allow the electron to relax back to the ground state. Also, if you are really into this stuff I HIGHLY recommend getting a quality 365nm true UV LED with a proper zwb2 filter to look for fluorescence. The 400nm LEDs here just totally wash everything out in purple, but the filtered 365 light is DRAMATICALLY better at viewing everything. A good pair of UVEX clear UV blocking goggles would also let you see the true colors of fluorescent things unlike the yellow goggles.

[@spikester]

Oh yeah I have a convoy nichia NCSU276A 365nm flashlight with zwb2 filter and its absolutely the real deal. That emitter already has some of the least unwanted byproduct, but with the zwb2 there is basically none.

[@LordGryllwotth]

Yes! My regular prescription glasses blocks out the UV so I only see what is fluorescent. Example when I was shining my 365nm flashlight in the snow, I could see cloth fibers, and had no reflection of UV.

[@kaspervendler1726]

Any 365 or below UV emitter you can reccomend?

[@Muonium1]

@@kaspervendler1726 they're extremely rare and very expensive but Raymond Wu on here has shown off some ~260nm flashlights that he makes. Everything is still highly custom and small individual operations selling them.

[@MAGA_Extremist]

I have and recommend the Weltool M2-BF very powerful single LED with a woods glass filter

[@OfficiallySnek]

I guess I should check all of my rocks that I thought could be amber

[@SpydersByte]

lmao

[@shannonkohl68]

Ignorance is bliss

[@MAGGOT_VOMIT]

I've purchased many UV lights for rock hounding. You will notice them even more and from farther away with the "Convoy C8" 365nm UV. It's a lil pricey ($100) but it is the best 365nm UV out there. It will fluoresce objects 70-90ft away with only a single LED. My much larger 3-LED "uvBeast V3" 365nm with it's 3 LED's, only fluoresces objects 50-60ft away. The uvBeast V3 is still is an awesome light and beats 99% of the UV lights out there.

[@OfficiallySnek]

@@MAGGOT_VOMIT Haha, I actually own a Convoy C8. And I totally agree with the fact that it's amazing.

[@MAGGOT_VOMIT]

@@OfficiallySnek Last year My C8 was lost in transit and Amazon had a "uvBeast V3" available for me to receive next-day before my trip up north to hunt some sodalite. I did receive my lost C8 the same day though. The C8 was definitely brighter than the UvBeast V3. For their over hype of the V3 on their Amazon page and the fact that the V3 is still a great light, I decided to keep it as a back-up. 🤣

[@cyrex686]

The word for electron and electricity comes from the latan word for amber, electrum. People in ancient times used it as a bearing material with wooden looms and got shocked by the static electricity produced. Got that gem from Tim Hunken's great series - The Secret Life of Machines.

[@dimitar4y]

wow didn't know that. thanks!

[@AndroidFerret]

Awesome

[@gmo5011]

Please allow me a correction/addition here. The word electrum comes from the greek word ἤλεκτρον. While latin has been the bridge transferring the word to the western languages, the origin of the word is clearly ancient Greek. The word electricity comes from this word, with an latin ending of course, as the Greeks would name it ηλεκτρισμός.

[@Quickened1]

The sales of uv flashlights just went up! Here in Texas, we use them to hunt scorpions... It's actually fascinating to see just what fluoresces around your house at night. Just be sure to wear eye protection, because it's a little addictive, and you might spend a couple hours staring at things that glow. It all started with blacklight posters from the 70's... 😵‍💫

[@MAGGOT_VOMIT]

Good advice!!👍 I've purchased many UV lights for rock hounding. You will notice them even more and from farther away with the "Convoy C8" 365nm UV. It's a lil pricey ($100) but it is the best 365nm UV out there. It will fluoresce objects 70-90ft away with only a single LED. My much larger 3-LED "uvBeast V3" 365nm with 3 LED's, only fluoresces objects 50-60ft away. The uvBeast V3 is still is an awesome light and beats 99% of the UV lights out there. Just don't shine them in your bathroom. 🤢🤮🤣

[@Quickened1]

@@MAGGOT_VOMIT haha, yeah, I'm sure! Sounds like you have some awesome flashlights...

[@dhawthorne1634]

That broad cast, lower power light is great for avoiding/catching scorpions. I'd also like to point out that that "tranparent rock" appears to be Citrine. It is a quartz crystal that has a metallic contaminate that turns it yellow to orange and is quite prized as an alternative to Topaz.

[@Randrew]

The sodalite sample at 7:36 is really beautiful when fluorescing under UV! Fascinating.

[@OleJanssen]

These lamps are also a good way to detect fraud. When I got one of these, I immediately went ahead and tested them on a few amber souvenirs that I had laying around. As it turns out, only about half of them actually were fluorescent. The worst one was an amber necklace which my great-grandmother once bought for over a thousand Deutsche Mark. As it turns out, that was some expensive plastic.

[@ratulxy]

That sucks.

[@kevin42]

Fyi: UV glasses dont need to be orange. A lot of clear plastics block UV (both 395 & 365) just fine. In fact you dont even need to get spesific UV rated clear glasses as the majority of generic safety ones do the trick.

[@mbessey]

Even most standard eyeglasses block a lot of UV, especially polycarbonate lenses. My prescription glasses block just about as well as my UV protective goggles.

[@kevin42]

@@mbessey perks of living in the US. Wish i could get poly glasses

[@jimurrata6785]

Came looking to say this. The amber color may help, but Polycarbonate thicker than .75mm should block almost all UV.

[@filonin2]

@@kevin42 They don't have plastic where you live???

[@kevin42]

@@filonin2 nope. And afaik its mostly just a US thing. All our glasses are well... as Apollo would put it, g l a s s.

[@benmcreynolds8581]

I played with my rock collection and I was blown away to find that I had a good amount of florescent rocks and then had fun photographing them as a group on my table. It's so facinating to me. Nature is awesome

[@lukasvondaheim]

And once again a masterpiece of science video! I just want to thank you for your efforts put into those videos. Those videos are the reasons why my interest in science sparked again. I love it and your content! Please stay safe and healthy in those uncertain times

[@davidcovington901]

Unusual. The UV lights and the anti-UV safety glasses were as represented. Would an IR detector also notice the output from amber being irradiated with UV? You mentioned the translational vibrations between outer orbitals. Tx for the northern gold lesson!

[@PanquequeDeChele]

Actually any CR-39 or polycarbonate prescription lens has 99% protection against UVA and UVB wavelengths, making uv protection lenses not as necessary if you wear glasses. I would love to see a video of Brainiac comparing safety lenses to prescription lenses of different materials and coatings.

[@aleksandersuur9475]

Not unusual, UV filtering is kind of a freebie with polycarbonate plastic. en.wikipedia.org/wiki/Polycarbonate#/media/File:VisibleLightSpectrum2.svg

[@StormBurnX]

I need to get a spectrum analysis tool, I have a UV laser and a UV LED flashlight. They both make ravewear and neon things fluoresce, but the laser diode does not cause scorpions to light up, while the flashlight does Sorry for my spelling :)

[@brainiac75]

I envy your UV laser... While the 405 nm violet 'blu-ray' lasers are very good at making things fluoresce, they are also visible. I would like to have a UV laser in the future to make things fluoresce using truly invisible light in an even more impressive way. Though a single wavelength laser may not be as good as a wider spectrum UV LED. The wider the spectrum, the more likely it is, that some of the photons have exactly the right wavelength/energy to cause fluorescence. Thanks for the early watch!

[@SpaghettiEnterprises]

@@brainiac75 Collab. with styropyro?

[@StormBurnX]

@@SpaghettiEnterprises I feel like that would be a HUGE step down in terms of safety and send a very poor message to his viewer

[@Randrew]

"but the laser diode does not cause scorpions to light up" The best scorpion lasers are the ones that make them burst into flame ;)

[@WestOfEarth]

@@brainiac75 I've also been searching for a spectrum analysis setup and the setup you used here looks like it would work for my purposes. Could you tell us what software and hardware you used? Thanks.

[@sulfie46]

A Geological video? Your depths of science never cease to amaze! Practical and Enjoyable!

[@brainiac75]

I am born curious so I don't limit myself to a few sciences. Anything interesting to me is worth exploring :D Thanks for the early watch!

[@TheExplosiveGuy]

Have you used one of the filtered UV flashlights? They emit 365nm UV and have black lens filters that block all visible light generated. The UVBeast is an excellent choice, it's about $40 and puts out 20 watts of 365nm UV, it heats up anything it's pointed at it is so bright.

[@marcfruchtman9473]

Very Cool. Thank you for the great explanation on how Amber Fluoresces. Also, enjoyed how you tested the glasses.

[@dinohunter7176]

I still love your unique way of explaining after years of following you. Thanks!

[@techsbyglebbagrov7470]

Time to put on sunglasses and watch the video!

[@brainiac75]

I do generally recommend sunglasses with UV protection - though not for watching this video and amber hunting at night with UV light ;) Thanks for the early watch!

[@LordGryllwotth]

I have a 365nm flashlight and my regular prescription glasses (with extra blue filter (purple tint)) blocks it out completely. So when I example shine the light on snow I can only see what is fluorescent in the snow, so there is no UV reflection. Do not get the yellow protection glasses if you plan to see what is emitting blue fluorescent light, since it blocks it out. I also ordered cheap blue light blocking glasses (has the purple tint) for kids on aliexpress so they can join the fun.

[@slonkazoid]

Been a long time viewer, love your videos.

[@brainiac75]

Glad you are still here and watching this early. Thank you very much, Marcus :)

[@ProtoMan137]

Wow, you have such a calm voice and explain really well! Your videos are super interesting! Thank you :)

[@timb7085]

Interesting - I never new that amber Fluoressed - I'm used to other minerals such as zinc ores and others that are quite impressive under certain UV lights. (There's actually a mine in Franklin NJ that offered tours - and to see the walls of the mine light up with low level UV light is fantastic!)

[@fangthewarrior]

I love florence! With UV light it brings out the hidden beauty otherwise unseen

[@becarus3616]

This is similar to how quantum-dot TVs work. And I find it fascinating.

[@Mikkel028]

Det er nogle rigtig gode og lærerige infomation du kommer med. Mange tak og god aften til dig :)

[@brainiac75]

Selv tak , Basse :) 'Undervisning' kan godt være spændende - flere videoer på vej!

[@Mikkel028]

@@brainiac75 Det lyder godt :) eller jeg kan komme hjem til dig og se det :P jeg bor tæt på ^^

[@JohnnieHougaardNielsen]

Yeah, I've used my UV flashlight to find a bit of amber on a local beach. However, I noticed that some types of seaweed also react strongly to UV with a similar color. And of course some plastics too.

[@n-steam]

(quietly begins counterfeiting 'gold of the north' with turmeric powder)

[@ronsku57]

Your videos are the best!

[@brainiac75]

Quality over quantity ;) I am not here to make half-hearted videos. Thanks for the early watch, Ronsku!

[@Youtuber-ku4nk]

@@brainiac75 Agree. I'd just wish that your accent would improve. Haha, no, just kidding :)

[@Quickened1]

@@KZbinr-ku4nk his accent is half the reason I watch his videos! 🤣

[@Youtuber-ku4nk]

@@Quickened1 😂

[@106640guy]

Protective glasses that actually work!?

[@brainiac75]

For being inexpensive and unmarked on the glasses, I was a little surprised by how well they work for 395 nm LEDs. And not only do they actually protect, they also make it easier to spot the amber. Protect and improve performance in the process - really no reason to not wear these for amber search :) Thanks for the early watch!

[@mohalothman99]

it is impressive the way how to make the boring things so amusing. thank you for this amazing video

[@Warhawk76]

Cool video, I never knew amber was fluorescent.

[@peterjf7723]

Scorpions are also fluorescent under UV light.

[@nakfan]

Thanks for making these video. They are a joy to watch 👍

[@TaagR]

So inspiring. This really makes me want to get a cheap light bar and replace the white LEDs with UV, and put it on an atv. I wonder what the forest would look like flood-lit in UV? Maybe I'd collect all the glowing rocks to put in a garden with a UV solar lamp to make it glow at night.

[@stephen1r2]

You can just buy a big "Sanitizing" scam wand. I've seen them manufactured from shoplight housings. They should make things fluoresce but won't actually kill anything since nearly all uv leds are uv-A like the big flood flashlight. The real uv-C leds can't have plastic housings or lenses

[@icherishcrochetandknit309]

@@stephen1r2 what about the headlights on the newer cars...those lights make you go blind, can they also killl like the lights you mentioned?

[@austinjk24]

I do biology field work , and we use these flash lights to search for scorpions at night. They glow very bright. Makes finding them easier. Great video!

[@matthewellisor5835]

Such glorious beauty in this place we find ourselves existing. Setting aside any beliefs or opinion as to it's origin, how could anyone not be in awe at this and countless other beauties? Lovely video and thank you!

[@Pure_Science_and_Technology]

Hello. Great video. I just wanted to say, here in Michigan we have rocks ( sodalite-rich syenite rocks in Michigan ) that contain florescence. (AKA Yooperlite) Yooper is a native word, meaning upper peninsula of the state. These rocks are sodalite-rich syenite rocks that also glow under UV light. It’s nice to now know, the glowing is due to the excited state of the electron and losing energy in the form of light. Oddly, it’s the same color as the amber in most cases, but some do vary in color. So, I’ll assume the energy released is different in some, for reasons I’m sure you know.

[@atomdyno6128]

I am on my way back home from vakation at Fjellerup strand and i found a five gram peice of amber while snorkeling

[@brainiac75]

Congrats - that's a nice, decent piece. The biggest amber pieces in this video are around 3-4 g. Thanks for the early watch!

[@WilburJaywright]

I’m glad the products all held up under test with flying fluorescent colors. :-)

[@anthonyvolkman2338]

Wow! Your videos are amazing and beautiful! Very well done!

[@vojtem5]

you sound super nice and your fun to watch keep up these videos!

[@theawecat27]

so interesting! very good explanation of fluorescence

[@bearox8302]

7:48 This is why I study science and why I love understanding everything from the world around me, I got goosebumps just by watching this nature´s gift

[@miskee11]

But the question is: how much amber do I need to find to cover the cost of this equipment?

[@Quickened1]

You could do it with one piece if you find some with an insect in it! Ants and flies are somewhat common, (yet still valuable), but find a piece with a bee, spider, or other larger insect or lizard, and that amber can be worth it's weight in gold!

[@AndersKvistDK]

Brian, don't you have samples of Uranium? It also emits visible light under UV light...

[@milespeterson5049]

Maybe the marble looks like lava because it was made in lava. just a guess 7:57

[@hishaammuhammad6667]

Hello bro,your videos are soo good,i like that accent.

[@brainiac75]

Hi Hishaam. Thanks for the early watch! Glad you like my videos - more coming with my Jutish accent :D

[@AlienLivesMatter]

beautiful, thanks for exploring the natural beauty of amber and other naturally fluorescent rock.

[@michaelbjerg-nielsen6814]

At 2 min 10 sec to 2,13 the beams from the two sources seem to "stick together". Like they won't let go of each other. I have seen that in a sunrise too, where it did not want to let go of the ocean. Is this our mind playing tricks on us? Big fan by the way. Ser alle dine videoer :)

[@korpen2858]

I've seen that too. This was during sunset over the ocean. I have pictures of it. Maybe it's some funky quantum interaction...

[@michaelbjerg-nielsen6814]

@@korpen2858 that would be pretty cool ;)

[@chri-k]

i believe that this in particular is in part a camera artifact, and in part just the darker parts of the spots overlapping to create a much brighter part than their sum ( perceived brightness is not linear ). I would think the sunrise one is a mirage, but i am not sure.

[@michaelbjerg-nielsen6814]

@@chri-k I like your answer, but the visible experience is exactly the same, so there must be more to it, I gather :)

[@chri-k]

@@michaelbjerg-nielsen6814 the particular camera artifact is that the change in exposure in response to change in brightness is not instant ( so the camera overexposes for a few frames, making the overlap even brighter ) - and it is not instant for your eyes either.

[@sebbes333]

6:15 Think of that mechanic like a gearbox in a car, it turn high speed rotation (high energy UV photons) into a low speed rotation (visible photon).

[@sphygo]

That shot at 8:00 is just _gorgeous_

[@secretagent5658]

Can you do a video on many different kinds of florescent rocks that can be found in your backyard? We have a patio deck and we put rocks below them. And I took my blue laser outside one night to do some wood burning in the nice cool summer weather. And I noticed that the rocks, pretty much all of them had this orange glow on the edges. But when you turn the light off they don't glow and you can't see any paint or anything of any sort on them under normal light from a flashlight or anything. These rocks were bought from a mass rock company where they take rocks from a copper mine or canyon and grind them up and sell them as rocks or gravel. I would love to know what was on these rocks and why they glow an extremely bright orange color. I noticed it wasn't just on the rocks as I shined the diverged beam on the concrete and leaves on the ground. This orange was in streaks on the concrete and also on leaves on the ground. Not all of the leaves had the color but a lot did. I also went inside and saw the same color but in very tiny pieces of fabric on the carpet. I could only see this color with my blue laser safety glasses on. Without them on I couldn't see any of this orange color. Could you do a video on this particular phenomenon or subject to help answer this very strange question and phenomenon? I've tried searching the web for this info, but it appears it doesn't exist because nobody has covered it. Or maybe I'm looking in the wrong places. Great video by the way, keep it up!

[@rrrimve]

This is masterpiece. Thank you for your efforts. I did enjoyed it and got some inspiration to do my own research about Amber. Best wishes.

[@sanYtheFox]

You should probably mention to be careful on the German side of things, there is a lot of phosphor on our beaches that can be mistaken for ember.

[@shadowknight7584]

7:45 my god why didn’t I know what this looked like this is beautiful

[@salec7592]

Anyone tried building an UV-pumped amber core laser yet?

[@Tibor716]

Those are impressive glasses.

[@tranceemerson8325]

this is a very different kind of video, way cool! thanks!

[@iamdarkyoshi]

I want a countertop made of that last sample. It looks gorgeous!

[@Nobe_Oddy]

could you show us other natural things that fluoresce under UV light? maybe just going for a walk in the wilderness and shining it on everything we might get some real surprises! And you could go into the forest, to lakes and rivers, maybe some meadows.... And OF COURSE go to some places with different types of rocks... (I KNOW you have more than clay and mud lol.. right???) I think it would be SUPER MIND BLOWING!!! And now that it is Summer time you will get some real results compared to the rest of the year! What do the rest of you guys think? Sound like a cool video?? :)

[@adam_mada]

Another amazing video mate. Can you tell me why your UV light shows the spot's on the Banana but my same Nm LED torch doesn't? A mystery for me it is.

[@moesby80]

Now we just need to know where to by those safety glasses that work, and the small flashlight

[@Quickened1]

Ebay!

[@SpydersByte]

7:53 damn, yea, that definitely is beautiful!

[@MAGGOT_VOMIT]

I've purchased many UV lights for rock hounding. You will notice them even more and from farther away with the "Convoy C8" 365nm UV. It's a lil pricey ($100) but it is the best 365nm UV out there. It will fluoresce objects 70-90ft away with only a single LED. My much larger 3-LED "uvBeast V3" 365nm with 3 LED's, only fluoresces objects 50-60ft away. The uvBeast V3 is still is an awesome light and beats 99% of the UV lights out there.

[@nnhk0056]

We use the same LED flashlights here in Nevada USA to spot scorpions. They fluoresce under black light.

[@nashsok]

Have you tried taking a spectrum of the florescence?

[@Geniusinventor]

In this video nature is Showing off 😎

[@Quickened1]

You really wanna see nature showing off? I fairly recently watched a video where divers took uv lights under the ocean for the first time, and it has opened a whole new door for scientific research. They've had to reevaluate how fish actually see and interact. It is one of the most fascinating discoveries in the last 100 years!

[@the_ALchannel]

Great video! Do you think you could measure the luminescence spectrum of amber with your spectrometer?

[@gratshor]

I guessed right. Left sample is amber. And i know name of right side sample - it is yellow or "honey" agate. In childhood, playing in sandbox we named such agates "sun stones" and hight valuing it as child treasures. I'm still keep one with milky yellows and light oranges growth layers.

[@IsAmericaforSaletoChina]

phosphorus, (is your answer) I learned about this in the 8th grade, there is an explanation, sometimes we don't make it known worldwide for free. Your welcome Brainiac75

[@Ab-qv8zc]

Very interesting, great job! Subscribed

[@JustPyroYT]

Great Video as Always! 👍

[@coolcoolercoolest212]

Your voice is very soothing 😪

[@riverasod8524]

Awesome I love watching the stuff

[@melodoubt]

Great presentation. Thanks for the insight.

[@zerofire9479]

The last bit, the lava one, would look cool as a table with lights like that in it that can be turned on or off

[@misterwhyte]

Just imagine how incredibly different the world would like like if our eyes were allowing us to see a wider spectrum of colors. It would be mind blowing and disturbing all at the same time.

[@bobwatkins1271]

Could you post a link for the spectrometer you are using.

[@alaric_]

Would have been nice to see how much regular Danish seashore has amber bits mixed with the regular rocks. Would guess not much but still...

[@ephjaymusic]

I would want to know why the seashore in particular would have deposits of amber - it is fossilised pine sap so I'd expect it to be found underneath forest floors or in caves...

[@Quickened1]

@@ephjaymusic many bodies of water in the world were once dry land. Trees may have grown there for millions of years before they were submerged...

[@ephjaymusic]

@@Quickened1 makes sense. I'd love to go on a beach hunt with a UV flashlight...

[@Quickened1]

@@ephjaymusic this video has reinvigorated my desire to go on UV hunts everywhere, including the beach! You never know what will show up at night. You'll see things you've never seen before...

[@ephjaymusic]

@@Quickened1 you know what, I'd love to go to some of those abandoned uranium mining sites where you can find various fluorescent minerals of the uranium variety shining bright green/yellow... That's a super cool hunt imo.

[@leopiemonte3399]

My normal eyesight glasses (transparent)block almost all uv light. I tried both with 395 and 365nm, when I shine the lights on fluorescent material with my glasses in front, the fluorescent material doesn’t react at all.

[@MrSmriley]

I've been up in Fano in Denmark using these at night, but the problem is that certain shells and seaweeds also flouresce, so it's still very tricky to find any amber.

[@Meiestrix]

Would be interesting to see if normal glasses would also block the UV light from the flashlights.

[@sarowie]

and then go into the reasons. If I recall correctly, some glass and plastics just happen to absorb UV light. On the other hand, some "sun glasses" from "shady companies" do not absorb UV, which is a problem as the iris opens to compensate for the dark, but the eye is hit with much more UV. Yet "name brand glasses" block most UV, despite being clear to visible light.

[@SoulDelSol]

Normal glasses for poor vision? I don't think so. Normal sunglasses? Perhaps if they are high quality and made to spec

[@sarowie]

@@SoulDelSol take a look at en.wikipedia.org/wiki/Corrective_lens#Lens_materials - most materials seam to block UV. But offcourse: "Most" is why a video would be interesting. Now offcourse: normal corrective glasses do not cover the whole eye, so do not use normal glasses as dedicated eye protection, when handling UV sources. But in normal (sun-) light, the UV protection is useful, without drawbacks.

[@SoulDelSol]

@@sarowie interesting, I appreciate the info as it's not something I know a lot about. It says the UV cutoff for corrective glass lenses is 320nm. So therefore it wouldn't protect from the 390 nm of uv flashlights used in this video right? (Aside from not covering eye from other angles)

[@SoulDelSol]

Also my corrective lenses are "transition" lenses, meaning that they turn into shaded corrective "sunglasses" when you're outside and shading goes away when you return indoors. It would be interesting for him to test those

[@whitewolf6605]

You wont need that level of UV protection if you lived any further south. It's uncanny how easy Scandinavians can burn.

[@ryanatkinson2978]

Very interesting video. I was wondering during it how he found all these samples. Fake amber would be pretty rare (at least I hope), so how do you get it?

[@SpydersByte]

why would fake amber be expensive? those are just rocks that happen to look a lot like amber. If anything would be expensive, it would be the *actual* amber.

[@vanguard1427]

this is exactly how white led lights work you have a high powered UV light source when forced through a phosphorus crystal it excited the eletrons and the UV drops picks up to a higher state of visible light

[@reniexabbu7993]

I have done uv light tests also and it turns out quartz zircon and topaz will glow and sapphire will go jet black even if it is a clear or yellow sapphire, I take the light out at night too but please beware and be aware that looking at the rocks with a uv light on a glass table will also burn your eyes as it happened to me and I couldn’t open mine for 48 hours as it was equivalent to welding flash burn and I have had eye sight troubles ever since

[@davidwraight9940]

8 years back I made UV box (small to 3 MTR square the bigger bulb being 5kw). It turned my work shop purple on testing , I advise glass tinted spectacles and not plastic tinted spectacles plastics don't filter UV it's not something to to be taken lightly, it will blind you

[@carolcossa6244]

Wow, I wish I had equipment like that.

[@ChronoSquare]

I wonder how widespread that Greenland rock is. Can you imagine if there was enough of the rock to be cut into counter tops? By day, marble, by night, rave party!

[@1.4142]

That's why some types of amber look blue under sunlight

[@azaz700]

Hi, what equipment did you use to measure the wavelength?

[@victoryfirst2878]

I seen a special about amber on television. They stated that amber is getting harder and harder to find. Supposedly there is a limited amount of the element washing up and being found in eastern europe. Can you tell me if that is the same in Denmark ??? Nice video Sir.

[@medienmond]

where to get these uv glasses in germany? any link to ebay or aliexpress or amazon for me?

[@rabihalkaysi]

Fascinating. If you cool amber using liquid N2, will it become phosphorescent?

[@dexobj]

I've seen a video once of people bringing a uv flashlight to a rock beach at dusk and some of the rocks had that lava looking glow (7:56).

[@iamnotmydepression]

Super interesting, thank you 😊

[@oreubens]

the animation at @5:50 is "fake". Electrons can not be in intermediate locations they are always on one of the orbitals. this is why the energy levels are called quanta. This si also why light spectrum have verry narrow absorbtion lines, these lines match with the energy quanta of different atoms and it's why we can identify atoms present in stars. Electrons "immediately" switch from one orbital to another when they absorb or emit energy.

[@emmanuelstamatakis8218]

Thank you sir very helpful I like how you’re very thorough keep up the good work I enjoy your videos very much thank you

[@primeral]

311 was correct, amber is the color of your energy. Interesting fact: after my natural lens was replaced with an IOL for cataract surgery, I'm able to see ultraviolet as if it were a normal part of the visible spectrum.

[@caterscarrots3407]

Woah, really? Are you seeing like those pretty UV patterns on flowers and stuff?

[@primeral]

@@caterscarrots3407 if it's in the UV range, I see it vividly.

[@caterscarrots3407]

@@primeral Wow, that's very interesting.

[@somethingelse2740]

Thank you for reminding me to go walk the creek behind our house with a UV flashlight. I'll be heading out tonight with the wife. We live in a glacial till zone in NY. So many random minerals can be found in the creek bed. Can't want to see if any of them light up.

[@colfaxschuyler3675]

What sensor are you using to get the spectrum of the LEDs?

[@lama-chan]

yeah picking up the amber piece is the most telling :)