What Makes Something See-Through? | Neil deGrasse Tyson Explains...

Why are some things see-through and others are not? Neil deGrasse Tyson and comedian Chuck Nice explain the physics behind transparency and the electromagnetic spectrum.
How does transparency work? Learn about different wavelengths and what objects are transparent to them and what objects are not. Can a microwave get through your microwave oven’s door? Why do you lose an FM radio signal in a tunnel? How do sunglasses block UV light but still let you see? How would an invisibility cloaking device work? Can you make something look transparent?
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#StarTalk #neildegrassetyson
00:00 - Transparency Around Us
04:10 - See-Through for Microwaves & Radio Waves
08:57 - Infrared & Ultraviolet
14:25 - Invisibility Cloak & Becoming Transparent

[@sorintata8444]

As a blind person, I truly appreciate when they explain what they are doing in the video, whether it's through the use of their hands or by describing how they are blowing air over a piece of paper. Unfortunately, very few people are aware that blind individuals listen to KZbin videos, and they often fail to provide sufficient explanations, which can result in me missing out on valuable information. So, thank you again for taking the time to describe your actions and being inclusive.

[@brianhuffman2070]

I hope your reading this....are daredevil powers real?

[@damianmlamb]

If you have something or someone to read back to you have you tried to look into elon musk and neura link? Supposed to fix issues I'm not sure about blind but possible actually

[@jackisback8446]

Can you please explain as a blind person how you perceive sight and stuff like that? Id find that very interesting, thanks

[@WtfYouMeanDude]

Hello blind person. 👋✌🍭

[@WtfYouMeanDude]

Ps: you mis-spelled "either"

[@blacksonne19]

I can't get enough of this show. Not only is Neil brilliant but his passion an ability to reach people and explain such complicated topics. Professors need to learn from him.

[@IIISentorIII]

In Switzerland, you learn all this stuff at the age of five to six in kindergarten. I'm 42 now and clearly remember this. My niece is 9 and my nephew is 7 years old and both know this for years. It is unbelievable to me that a full grown men could not know this basic stuff. All you need to know is the full spectrum of light and what part you can see of it. I was so blessed to grow up in this Country.

[@AceSpadeThePikachu]

I'd love to see a part 2 of this that goes into the molecular physics of why some materials (like glass, water, diamonds and some plastics) are transparent to visible light, but almost nothing else.

[@markthomas6045]

Right?? Why can we manufacture transparent plastic bottles etc but not transparent metal?

[@laxnkid22]

​@@markthomas6045 transparent aluminum exists

[@visteobman4085]

That's why I watched the video... disappointed again. Gotta stop watching these vids!

[@dougpetersen7285]

Please do this!

[@daylesuess552]

​@@laxnkid22on star trek

[@ModestNeophyte]

I wanna thank my high school Physical Science teacher, Mr. Hiott, for this memory: We were learning about basic optics, and he covered reflection and absorption, but I was feeling snarky and said "well what about clear stuff then, huh" He got quiet, looked right at me and said "It *transmits* it" and my jaw dropped lol

[@sureshkrjsl]

Physical teacher?

[@ModestNeophyte]

@@sureshkrjsl ?

[@nyc220guy]

@@sureshkrjsl "Physical Sciences" are the studies of inorganic matter. Anything that is not alive.

[@sureshkrjsl]

@@ModestNeophyte I am sure it said "Physical teacher" and you corrected it. Haha But I don't see the "(edited)" thing your post so may be my late night brain didn't read it correctly. Lol

[@darcassan]

I loved the talk, but honestly, I was hoping for more insight into the property of transparency itself in terms of the mechanism on a more fundamental level.

[@McPilch]

Didn't get a chance with Chuck's jokes and tangents taking up 80% of the video! 😅

[@whiskeytango9769]

I believe that it has to do with the energy of the photons [wavelength] and the energy level of the electrons around the atoms of the material in question. If the photon does not have the right energy level to match the energy needed to bump an electron into a higher energy state, it cannot be absorbed, and it passes through...transparent. If the photon does match an energy level and gets absorbed, not transparent. That electron will then quickly drop back to its previous energy level, emitting a photon at the same energy level, but in a random direction...hence...the colours of objects. Cheers

[@Raz.C]

Well, visual properties of things are based on their surface chemistry. For something to NOT be transparent, means that it absorbs incoming photons, which excite the surface atoms, which then re-emit that light. Based on the amount of energy that photon has when it is re-emitted, that determines what 'colour' we see that object as being. For something to be transparent, it would have to fail to absorb photons. Or at least, it would have to fail to absorb a majority of photons. That's as far as my certainty goes. Beyond that, if you would want to know why 'x' doesn't absorb photons, while 'y' does, it would just be conjecture on my part. My guess would be that the electron structure of the atoms/ molecules/ compounds would have a lot to do with it, with complete orbitals (s/ p/ d/ etc) trending towards transparency, while incomplete orbitals tend to opacity. For example, water has 2 hydrogen atoms with complete (covalent) "S" orbitals and oxygen with a complete "P" orbital. But again, that's just a supposition.

[@theduder2617]

That is why centers of education exist. No need to wait for anyone to explain it. And you'll get much more inclusive information to boot. By its design and function, youtube is unable to provide the entire picture. Get a rough, working idea here, then hit the university for the complete knowledge.

[@MusicByNumbersUK]

Ta da! :) kzbin.info/www/bejne/hZ7VYX2Erql1f5I and there's a few other ones in the suggested links and I think veritasium did one too. There's a few bad explanations that are even taught in school but that video sets it straight :)

[@Sawyer_Kush]

The mixture of Chucks comedy and Neils explaing is always so delightful 🖤🙏

[@sergiomoura5371]

I couldn't agree more. Chuck's hilarious!

[@chrisleggatt3240]

Ah, but " that same guy" was gold! 🤣🤣🤣🤣🤣

[@stevenswapp4768]

I'll say it before and I've said it again: Neil to reason, but do so with a Chuckle 👍

[@amarte5996]

Chuck is the GOAT

[@jimmyzhao2673]

I love Chuck's tangents which turn a 5 minute video into 20 minutes.

[@XisMe]

You rock Chuck and Neil !! I haven't missed a show in over a year now. Thanks Guys

[@michaelccopelandsr7120]

As it should be. ;-P

[@pushinkeys]

😂😂😂 I could watch Neil and Chuck all day!!

[@Life_42]

I will never miss an episode of StarTalk!

[@michaelccopelandsr7120]

As it should be. ;-P

[@jasminyala3231]

Expecially with chuck to know how to carefully lie through your teeth

[@nerd9347.]

PREACH! (Nice username, B.T.W).

[@Life_42]

@@nerd9347. Thanks!

[@nerd9347.]

@@Life_42 No prob! We’re you referring to the book, or the movie adaptation?

[@KaleOrton]

Neil 'Smoke deGrasse' Tyson is an absolute legend! Wish I had him teaching me at school.

[@georgedailey5596]

Love the show and the topic! 2 basic types of safety glass in the automotive world. Tempered safety glass which breaks into tiny cubes vs sharp shrouds. Typically side and back glasses. Laminated safety glass has a plastic film between 2 sheets of glass. The glass sheets can be tempered or traditional types of glass. Traditional glass + a plastic film is used for windshields. Windshields need to be as clear as possible after a fracture.

[@michaelallen2358]

You guys are great, love listening to you and Chuck.Thank you.

[@bhanusM99]

It's our favorite personal astrophysicist ❤

[@davidmudry5622]

TRANSPARENCY LOL 7. Why did NIST withhold from public release limited and specific input and results files for certain collapse models used in the WTC 7 study? (added 11/20/19) This information was exempt from public disclosure under Section 7d of the National Construction Safety Team Act because it was determined by the Director of NIST that release of the files might jeopardize public safety.

[@robthecryptosnob8548]

Love your work. Tiny mistake though. The windshield in a car is laminated with plastic so that it doesn't break at all. It's the side windows and back windows in cars that are the safety glass that shatters into tiny pieces. 😅

[@AntonioCorneal]

I love explaining transparency to people, because they don't realize that the windows in our houses are only transparent to visible light, but then your walls are totally transparent to infrared😂 imagine if we saw the world like that instead, our infrastructure would be very different

[@bloodgulchpatrick]

They are not

[@a.j.infowars7582]

🤯

[@jewulo]

@@bloodgulchpatrick Could you please explain for us non-technically and non-scientifically gifted.

[@bloodgulchpatrick]

@@jewulo Well, as Mr. Tyson has said, a thin glass pane in not transparent to infrared, effectively blocking it... but why would the walls be? Here's a little "scientific" test: try setting one of those heat lamps with hot wires in one room, and get in the adjacent room behind the wall. Do infrared rays still hit and warm you up? Probably not. Or look up, say, pictures of thermal imaging of buildings, used to evaluate thermal insulation efficiency and locate leaks. Doesn't look like "your walls are totally transparent to infrared". No big brain science, really.

[@DANGJOS]

Walls are transparent to radio waves, not infrared. In fact, they are completely opaque to infrared.

[@Wh0isTh3D0ct0r]

15:19 The James Bond movie in question was Pierce Brosnan's fourth and final 007 movie, Die Another Day (2002). However, the car technically did not "bend" the light around itself. It was a system which had the *effect* of bending the light around the vehicle. As Q (John Cleese) explained it: "Aston Martin call it 'the Vanquish'; we call it 'the Vanish'....Adaptive camouflage. Tiny cameras on all sides project the image *they* see onto a light-emitting polymer skin on the *opposite* side. You see? To the casual eye, it's as good as invisible."

[@angelasager6735]

I love you two! So funny, entertaining and informative. This channel has it all ❤

[@cedtheog5579]

I love these... It's educational, funny, and built on straight facts. Thanks for being authentic

[@Andy-nn4ji]

Chuck you are 'OUR' personal comedian. And between both Mr Degrass Tyson and yourself , you are educating us.

[@ubserrano8180]

I had a Photography class in Universality. We had a practice where we got to take a series of photos outdoors twice, once with the UV filter and the second without (on analogue reflex camera). After developing the pictures we could compare the 2 shots, the ones without the filter frequently had streaks of light. That was how I learned first hand about UV rays.

[@wild_lee_coyote]

If you take what Neil says about glass you can understand how greenhouses work. The glass in a greenhouse is opaque to IR and UV lights, they act like an insulator. But they let visible light in. This visible light has has a lot of energy and can heat up what it hits. This is why cats love lying in sunlight, it’s nice and warm. Well whe something heats up is emits IR light. That reflects off of the glass and back to any surface inside the green house. That is how a greenhouse traps heat in the winter without the need of a heater. Greenhouses let light in but trap the IR from getting back out.

[@wizlinkx]

This is one of the best of the best ones ever. Keep it up, guys.

[@Sacrengard]

Thank you Neil! I really appreciate these videos, and I love seeing how you enjoy making them! thank you!

[@kelsorice6028]

Thank you so much

[@davidvanwell2071]

I am glad this video has made things perfectly clear on transparency

[@clarkgrayhame1250]

I love watching these videos. Funny and informative.

[@liveonce2102]

Ive tried to find comedy that makes me laugh but cant much that makes me laugh. I need a good laugh with the stress around atm. I decided to click your video as im interested in science. I did not expect to laugh so much and learn at the same time. Loved it.

[@NobleSainted]

Listening to Neil explain physics is like eating a chocolate covered ice cream cone --- There's always this top layer of knowledge that I can ingest that always delivers yet another layer of enrichment of wisdom. Thank you Neil!!!

[@BennytheJohnson1]

I'm a glassblower. It's always fascinating hearing more science about this amazing material. Thanks for the prez!

[@silvershadow013]

Wow, just wow...this was really interesting!

[@pball1224]

Such a great episode! Had a great laugh at the preditor tangent.

[@facespaz]

I love Explainers, wasn't expecting to hear about the Predator, that was hilarious! Mr Nice and Dr Tyson are a wonderful team

[@Not_Vladimir_Putin]

came for the science, but left with sage marital advice. Thank you Chuck!

[@andypeiffer5]

Great edits!

[@thoso1973]

Some of the most enjoyable bits of Startalk since the beginning of the series, is when Chuck and Neil go off on a tangent inspired by popular films. 😆 Question: in Predator 2 we actually see the predator switching vision modes in his visor and I assume he is actually switching between different wavelengths of light/electromagnetic radiation, until he can detect the humans?

[@VoltisArt]

That's exactly what the visor is doing. It was uncommon tech at the time, but now people can buy cameras (including some smart phones) that can switch into other wavelengths for things like night vision. Normal digital cameras can see some infrared, and you can test this by "shooting" a TV remote control at a smartphone's camera. (Press any button, it lights up on screen.) One interesting thing I've seen online (edit: Searched and thought at first glance that it was Reddit, but the site in my search turned out to be flagged as malicious.) is a rainbow shown in three photos, from the same vantage point, in IR, visible light and UV. The surroundings shift a little in highlights but otherwise stay the same. Meanwhile, the band shown is a different size in each photo because rainbows - being made from complete light from the sun - contain the full spectrum including all the light we can't see. Larger wavelengths including infrared, microwave, and radio refract more and make the outside portion of the rainbow. Smaller wavelengths including ultraviolet, x-rays, and gamma refract less and make the inside of the rainbow.

[@truesimplicity]

Super interesting content today... 👍🏼

[@Corvaire]

You should have mentioned the transition from sand to glass and how that process transforms the opacity. ..and other chemical propogations that make other transparent materials. That could be an episode all it's own with a special guest.

[@VoltisArt]

Silica is transparent, to begin with. It's impurities, small particle scale, and refraction that make a handful of it seem opaque, along with other materials mixed in the sand, most of which would be filtered (sifted, burned, slagged) out in quality glass making. If you look at silica sand under a microscope, its transparency becomes...clear. Yes, that pun was unavoidable. I would definitely welcome a Star Talk expanding on this and getting into the molecular qualities that make particular materials transparent to particular wavelengths.

[@Corvaire]

@@VoltisArt yeah, maybe recent discoveries (concerning frequency and wavelength in regards to transparencies) will propagate a more informative episode.

[@CaptanCupcake]

I love you guys!! The banter is the best….. laughing every time !! AAAAAND of course the information is fantastic and I alway learn sooo much !! ❤😂

[@Kenadams240]

Very interesting

[@josephdonais4778]

good subject, thx guys

[@RK-tf8pq]

Based on the optical gap of glass, it is supposed to be transparent to IR, but OH radical present in glass network blocks IR. Since visible light can pass through the glass’s optical gap, lower energy IR should be able to pass through it. There are glasses which transmit IR (which are used a windows for IR sensor), but care is taken to remove OH radicals from those glass compositions or we can use quartz windows instead for that purpose. Quartz is pure SiO2, while glass contain network modifiers of SiO2 (such as sodium and calcium compounds), which reduce melting point of SiO2 (which makes glass making process cheaper).

[@williamm8069]

Neil & chuck follow up with polarization please!

[@jeffnaslund]

Pretty sure AM goes out in tunnels, whereas FM stays

[@homepup72]

Yep, he got that backwards.

[@jsturm41808]

Can’t believe how many “Wow, really?!” moments are packed in this episode. Thanks guys!

[@michaelmcchesney6645]

This was a really good explanation of transparency. I would appreciate a video along similar lines that explains reflection. Specifically, we know that certain substances reflect portions of the EM spectrum, but as I understand it, we know no substance that can reflect gamma radiation. What is different about gamma radiation? Other than the fact it gives comic book characters superpowers of course.

[@hedonepicurea4327]

Hilarious. Learned a lot. It was a fun way to refresh my knowledge. I typically focus on neuroscience, photons and atral these days but, was fun to watch and refresh.

[@thomasleach9417]

Entertainment and knowledge, this is a win win.

[@muthukumaranl]

Thank u guys!

[@edicuko9679]

Thenx mr DNT for shering the way you thinging.

[@rakib17874]

Brilliant insight ! Also in Ghost protocol Tom cruise and Simon Pegg made a setup of transparent scene kind of like Tyson explained! Just thought I put it here

[@freshiie22]

love chuck.... you cool too Neil. Great Episode! I learned a few things.

[@SpiritofLove2242]

Yup!😂. You guys are so AWESOME!!!

[@johnk8255]

Loving your podcast. Could you do a segment on quantum foam?

[@stringedaz]

These guys are both really funny and smart. Bravo.

[@stephanienirenberg7426]

Ohhhh exciting. A new one

[@TreysBlindSpot]

I wish my teachers had been as good as you. Excellent, always.

[@stuartseidel4908]

I'm glad you introduced yourself as," my personal Astrophysicist"😊 You have no idea how long I've been looking. 🤔👍

[@woodylinder338]

Wonderful explanation. Now. any idea as to the "why" certain materials are "transparent".... such as glass is to visible light?

[@Jossco1371]

These guys are so precious ❤️

[@stephenbenner4353]

When you get to gels used in stage production and theater lighting, the are opaque to all wavelengths of light except a specific small range, such as a green gel will only permit green light while it is opaque to red and blue.

[@plebcrabslayer]

3:36 As someone who made a stink about Cameron's night sky, you'd think NDT would make sure his editor knows to have Earth flipped the correct way. 😅💛

[@annecarter5181]

I just LOVE science!!!!! And Neil~

[@ParaglidingScotland]

Great talk (as always) : side note 😃 typically windscreen is laminated glass (two layers of glass with a plastic layer in the middle) designed to stay together when broken unlike modern car side windows 'safety glass' which is designed to fragment into thousands of tiny blocks as opposed to jagged shards 😎

[@thoughtfulskeptic7529]

Thank you! That matches my understanding and recollection. Now I don’t have to spend another 1/2 hour or 5 re-researching that!

[@fredrubin9778]

Windshield glass will not shatter. The side windows, as well shower glass and sliding glass doors, is tempered and does break into pea size pieces that are generally not sharp enough to cut the skin.

[@diegofernandez4789]

11:40 yes, that's why cars are damn hot inside when left in the sun, visible light gets into, warm the interior, the interior radiates infrared but can't escape the same way and get trapped.

[@lon3don]

Neil, Chuck and Gerald (Chuck's personal timekeeper).

[@asan1050]

Thanks Much !

[@MarioDallaRiva]

Another great ‘splainer 👍🏼

[@thiagoviniciusaires7622]

😂 I love Chuck’s impression of Arnold Schwarzenegger 😂😂 and I love that Dr Tyson cracks up every time it happens 🤣🤣🤣

[@gpowder911]

I've witnessed a green rim on Barbados sunsets viewed from the sea. Stunning.

[@Kikimercadotv]

This is awesome !

[@evilpandakillabzonattkoccu4879]

5:19 That's a great point! The way light changes through a medium effects its transparency. FLIR (forward looking infrared) cameras detect changes in temperature compared to the ambient temperature and use a gray scale to show that information (when it's high contrast, it can be set to be white hot or white cold. That means anything that is warmer than the ambient temperature, while in white hot mode, will look white compared to the background and things colder will appear black. So, with FLIR, you body heat will be whitish grey and any metal touching your body, will take your body heat and will appear whiter. So, a police helicopter with FLIR can see if you have a gun tucked under your shirt. Your clothing isn't as warm as the mental or your body, so it's transparent to the camera). When FLIR is aimed at a house, however.... next time you see police helicopter footage, look at the homes. you can't see through the glass. You can see the heat (if someone is home or not) but the glass (im presuming here) seems to change the direction of the IR beam and doesn't appear to let it return to the source. The reason your car gets so hot in the sun....the light gets through the glass but it can't easily escape and sort of bounces around...this appears to be similar with IR, making some materials that are transparent to our eyes, opaque to IR. 🤔

[@evilpandakillabzonattkoccu4879]

11:05 Hey! ....I actually *knew* something! Wow....this is a first for me!

[@Paha1725]

1:54. Chuck's face when listening about transparency of air. Fml, I was crying laughing.

[@nabihashahab8209]

Thanks for explaining transparency... I would like to be able to explain things this clear (pun intended)

[@MrGriff305]

This is interesting, but I hoped to hear the mechanisms behind it. Maybe next time!

[@sj0387]

Just freaking brilliant

[@XanTheDragon]

I love these two

[@KaleOrton]

Awesome explanation. How about electron energy gaps? 😵

[@antonimo.anonimo]

What an interesting subject. Talking about transparency. How can people see ghosts if they're ghost ?

[@jamesgreenler8225]

Excellent discussion 👏 🤣

[@evilpandakillabzonattkoccu4879]

1:33 I saw an amazing Imax movie about the oceans as a kid. They showed huge kelp forests swaying in the ocean current.....and from that moment on, that's the only way I can see trees: Swaying in a sea of air. I admit, it makes me claustrophobic at times, especially when it's fire season (this year, the air in my city was the worst on the planet for a few days due to the smoke...and I have asthma, so it was like being in a unclean fishbowl).

[@grapako]

I laughed a lot. Gracias!

[@OriginalNuckChorris]

Chuck advice is on point.

[@gemgreg]

you guys are hilariously funny. I love it :D

[@michaelccopelandsr7120]

Bringing smiles to people is truly noble work. These guys are masters of the trade.

[@wraith1977]

I was hoping he’d explain what makes compounds transparent from a chemical standpoint. WHY is molten sand transparent to light, but a rock isn’t? I assume it has to do with the molecular structure and how the wavelength of the EMR makes it through the structure.

[@jamiboothe]

I responded with something that might help you a few minutes ago. It all has to do with the purity of the molten sand used for the glass, and how fast it cools. If it cools quickly it is more transparent, and less dense. It allows the wavelength of visible light to pass through, while denser molecular structures do not allow it to pass through. it is a simple concept, but a vast subject. SIO2 is a tetrahedral molecule and allows more gaps in its structure when solid. I will elaborate, if you ask.

[@shabananaeem1917]

Nice 👍👍

[@dreamer8973]

What a Transparent topic :)

[@michaelallen2501]

Here to fix some automotive glass mistakes made in this episode. Cars use laminated glass on windshields to prevent breaking at all. And they use tempered (safety glass) for side windows and rear windows. You might find laminated on the sides and back too, because it's a better sound insulator than tempered. But by law they only have to put laminated on the windshield.

[@gnarthdarkanen7464]

Actually, since the 90's (at least in the U.S.) the windshields are BOTH... They use the laminate plastic "sandwiched" between two layers of tempered glass... Tempered glass explodes into little shards (see "Prince Rupert's Drop") BUT also resists breaking... SO it is stronger than "ordinary" glass allowed to cool over time and "relax". It's just that once you DO breach the structural boundary, it shatters... The laminate layer keeps those tiny shards from becoming shrapnel, so it limits the amount of glass thrown directly into your face, and more importantly, your eyes. Glass is a fascinating medium to work, and it's an equal part frustratingly complicated AND nearly ludicrously simple. The most recent "SmarterEveryDay" (channel on YT) video is about Destin revisiting the guy who gave him his first Prince Rupert's Drop for experimenting, and he went back to try and catch a drop "mid-shatter" in glass. He'd already tried to catch one in Epoxy, and it worked but the Epoxy darkened over time, and that sort of frustrated him... It was (and still is) good, but not quite what Destin wanted. Anyways... He ends up back at the Glassmaker's Place, and does a whole video about the basic overview of working with glass, while trying to film the shop making Prince Rupert's Drops and then breaking them into molten glass for a good "exemplar"... You might find it fascinating. ;o)

[@jamiboothe]

@@gnarthdarkanen7464 Yes, the front shield has coatings to keep it together, though it is still tempered. "Tempered", simply is a word that describes glass that has it outer and inner layers annealed at a different temperature, than the inner layer. This creates tensile stress that causes all layers to fracture together once the inner or outer layer is penetrated. I am sure you are aware of this, so i won`t go into further detail.

[@N1gel]

Obviously your not old enough to have driven or owned a car with a safety glass windscreen as was CORRECTLY talked about in this video.

[@gnarthdarkanen7464]

@@jamiboothe Yeah, the Prince Rupert's Drop reference is just about the "How" of getting tempered glass... I'm well aware. Thanks... ;o)

[@pop5678eye]

Fun fact: the makers of Predator actually had a hard time creating the infrared footage because the very jungles of Mexico (where the filming was done) were so hot that all they got from it was a confusing image of everything glowing. This is closer to the vision revealed the Predator had without his mask on. The jungle had to be artificially cooled around the actors to get the 'thermal image' movie goers became more familiar with.

[@sanatonhijam5137]

Save Dr. Neil at all cost. He is the only one we all need❤.

[@jmanj3917]

16:05 Right on, Lord Nice. Right on.

[@onemanonmars6478]

Thanks for another very entertaining episode of StartTalk! I kinda missed the explanation of why glass is transparent. I have tried a few times to understand it, and what I have gathered is that the energy of the light is not strong enough to bring electrons in the atoms of the glass to the next level. Therefore, the particles just pass through the glass without the glass absorbing it, at least most of the visible light. Is that correct?

[@onemanonmars6478]

So I guess a good question is: Do both wavelengths at each end of the visible spectrum has enough energy to bring electrons to the next level but not the one we can see. At one end the wavelength is short and at one end it is longer. When I am not wrong then the shorter the more energy light has so why do both ends of the visual light get blocked?

[@shanelstevens]

Chuck’s on-point pop culture references are BOSS! 👏🤣

[@Djmarleytron]

0:03 When Neil said - "Chuck I got another one for you okay, okay it's transparency." Best answer could've been. 'I didn't see that coming'

[@coleo5428]

Chuck had some great points

[@morbek1]

I'm a glass artist... it's almost as sketchy as water. I love the stuff!

[@mickeybrumfield764]

I'm glad others take notice of the funny Geico insurance commercials.

[@tealleaves]

I love you guys....( I'm still trying to forget about the Pluto thing, Neil.)...🙂🙂

[@yolomolo2736]

Fun trick with this video: try moving the thumbnail back and forth up and down, this plays with our perception of motion and technology

[@jasminyala3231]

It's compressed learning,