I love how Hank answers these sort of questions. No condescending tone. No snide or smarmy comments. Just enthusiastic sharing of knowledge. This man is a hero of mine and I love him.
@Rocker4JCforever
Ай бұрын
In an interview he had with Brennan Lee Mulligan recently, a powerful metaphor was shared. If you have a lit candle, and use it to light a second, the light from the second candle does not diminish that of the first. In the same manner, sharing knowledge is an infinite resource. You don't take the knowledge from one person and give it to another, you just simply spread the knowledge around.
@gentronicus
Ай бұрын
He's like an evil Neil DeGrasse Tyson
@popdogfool
Ай бұрын
"It BURNS Britney, IT BURNS"
@TheJpiscool
Ай бұрын
Perhaps this is just my autism making it difficult for me to read tone, but I clocked his "I'm not sure what you mean" remark as being condescending. Did I maybe misinterpet?
@noelle2654
Ай бұрын
You must not have seen "You-....YA BURNED IT BRITNEY!!" Yet 😂
@thetherrannative
Жыл бұрын
I love it when Hank starts off slow and then that one question just SETS him off. It is utterly delightful.
@Killbayne
Жыл бұрын
his brain is just booting up
@backonyeon
Жыл бұрын
I love when bugs puts his finger in Elmer's gun barrel.
@backonyeon
Жыл бұрын
You are a child
@awkwardukulele6077
Жыл бұрын
@@backonyeon I love when Wile E. Coyote puts up a fake tunnel sign, but then Roadrunner runs through it, and then Wile E. Coyote tries to follow him, but just hits the wall and turns into a Coyote pancake. Then Roadrunner yells *”MEEP MEEP!”* from the other side of the tunnel. Delightful.
@ZeranZeran
Жыл бұрын
I love people who are passionate about what they know. Almost any subject. Always so nice to see.
@Kipicus
Жыл бұрын
I love how this is formatted like a conversation. And done so well! Flawless editing, and educational.
@yourmum69_420
11 ай бұрын
except hank sounds so mad at the other guy and kinda patronising and antagonistic
@johnlennon2333
11 ай бұрын
@@yourmum69_420lmao how? 💀
@Doomfoolable
11 ай бұрын
@@yourmum69_420 maybe if you're an idiot lmao. He literally answered his question and had a little fun with it.
@TylerF14
10 ай бұрын
Tiktok stiches and in app editing make this sort of thing pretty easy
@diatribeeverything
9 ай бұрын
Get over it people. He uses Google you bumpkins 🤦🏻. He's Alex trebec 2.0
@blueeyedbatman
11 ай бұрын
Hank is 100% that teacher that makes kids keep wanting to learn and strive for more. ❤
@luichibug
9 ай бұрын
My teachers would just put hank green on
@phatyoshi9867
8 ай бұрын
@@luichibugsame
@Dh-hg5ym
6 ай бұрын
Hes the genz and gena bill-nye the science guy And im here for it
@ilTHfeaa
2 ай бұрын
i am still confused about this tho lol
@lilpetz500
2 ай бұрын
Can confirm, I've been watching his content since middle school and am a grown adult who still loves learning about science
@DontMockMySmock
Жыл бұрын
from a physics-y perspective, rather than a chemistry-y one: glass is clear because it has flat, uniform surfaces. complex, many-faceted surfaces scatter light all which ways.
@xthomprya
Жыл бұрын
From a slightly deeper physics-y perspective, glass is clear because none of the atoms in it have an energy transition that corresponds to the energy of visible light, thus photons of those wavelengths cannot be absorbed
@ritwikbasak4960
Жыл бұрын
@@xthomprya so a glass absorbs no light? Like white colour ?
@xthomprya
Жыл бұрын
@@ritwikbasak4960 It depends on the material and the wavelength of light. Check out this Sixty Symbols video on the topic: kzitem.info/news/bejne/sKOoln6EsnZzfGU
@cleetose
Жыл бұрын
@@ritwikbasak4960 Clear glass does absorb light, just not the wavelengths of light we can see with our eyes.
@SummerAlleriaWindrunner
Жыл бұрын
He said Hank Green only, c'mon man 😆
@hoohaajazzbananas
Жыл бұрын
The "I'm not sure what you mean" fucking floored me. 😂😂😂
@xxportalxx.
Жыл бұрын
Deleting my post bc I'm fed up with all the notifications parroting the same arguments who clearly didn't bother to read my previous replies. Go read the whole thread if you must know. Oh and don't bother replying to any of it, I'm not even gonna read anything else from this thread.
@arleyantes9321
Жыл бұрын
@@xxportalxx. sometimes we get so used to proper vocabulary, it gets confusing when someone doesn't use that vocabulary. It's a complicated issue. I personally try very hard to understand all questions from any student, but sometimes I have to say, I don't understand your question for xyz reason.
@didybopintitys
Жыл бұрын
@@xxportalxx. I don’t think it should be taken as such or at least so seriously, I’m sure in some part he said it for comedic effect but also because “how is it that sand is glass” is quite the broad question in that sand isn’t glass lol it can be made into glass which If that’s all he wanted to know I’m sure he wouldn’t have asked, so saying “I’m not sure what you mean” isn’t to be dick ish but to elaborate on what you want answered, at least that’s how I see it
@xxportalxx.
Жыл бұрын
@arleyantes9321 I have absolutely no issue with someone truly not understanding a question for whatever reason, however it's fairly common for educators in stem to play coy about not understanding a question they in fact fully understand. Green was almost certainly doing it as a joke here, however in my experience it's often not a joke and instead pure condescension.
@xxportalxx.
Жыл бұрын
@didybopintitys well tbf depending on which you pick sand and glass can be chemically identical, silica sand and silica glass for instance are both silicon dioxide with few impurities. As for regular glass and sand the impurities are changed for largely industrial purposes that have little impact on the core question, which is why they are made of primarily the same material yet appear strikingly visually distinct. He obviously understood the question as he answered it succinctly thereafter. I agree with you that Hank was likely joking in this case, however in my personal experience educators often do this in a condescending manor that is not even remotely funny and only discourages ppl from asking questions.
@youdontknowwho505
8 ай бұрын
“Oh this actually the best part!” Genuinely loving his energy. Never change, Hank.
@LadyVineXIII
11 ай бұрын
This actually explained many things including the fact that it is a specific, if common, type of sand used.
“We will pay you back, by turning into a sand mine” is said in such a genuine yet bitter tone that is indescribable and only able to by done by someone like Hank Green
@stanleybochenek1862
Жыл бұрын
Store the delorean in the mines
@JmKrokY
Жыл бұрын
Yeah
@rachaeltumer1498
Жыл бұрын
I love these conversation style videos they're so fun
@billyalarie929
Жыл бұрын
They’re my favorite. Also, I don’t know if these people are established in the youtokosphere community, but I hope not. Bc it means that hank green is still interested in discourse with “the little guy”. Which is fucking dope.
@thebonniewong
Жыл бұрын
@@billyalarie929 I do know that this guy Johnny Harris started in Vox but now has his own bad ass channel about topics surrounding history, geography, science. His content is great and well researched. So he's not a little guy but definitely an important voice. I am very supportive of this collab.
@karenphang3207
Жыл бұрын
Same
@pedroaugusto656
Жыл бұрын
@@billyalarie929 Lol if anything this is Johnny Harris throwing a bone to this chemistry guy. Johnny is like a giant
@goestdummy
Жыл бұрын
@@thebonniewong he frequently oversimplifies, exagerates or blatantly disregards a lot of facts but yes he's great at bringing attention to a lot of important matters and starts conversations that are usually overlooked, he's a good starting point, but you shouldn't take his videos as gospel, and should definitely do your own research, there's some videos fact checking him and some even analysing his biases and arguing if what he does is propaganda or not. It's the internet tho, everyone is biased and you should take it all with a pinch of salt.
@stephenbeckman208
11 ай бұрын
Love your stuff, Hank! Today learnt about your health, so relieved to hear the good news. You're a gem of a person, just want you to know that.
@ginnyjollykidd
2 ай бұрын
Hank, you explained it so well! I'm now realizing I could use a ton of coaching on how to explain things so people understand. Sometimes it's hard being away from the ivory tower.
@moleary42
Жыл бұрын
Also (glassblowing student here) the glass we use isn't just sand melted down, there are recipes for different types of glass that people have been developing and refining pretty much as long as glass has existed... If you get the chance to see the stuff in the library at the Corning museum of glass they have old recipes for making glass in booklets, some even have tiny samples of different coloured glass in them. (I'm sure there are other places you could find these, I've just physically been to CMoG)
@chaoswraith
Жыл бұрын
For sure. He probably didn't wanna go too deep cause the original asker was so basic, "how does sand = glass"
@eiPderF
Жыл бұрын
I went there as a preteen. It’s when I realized that the “crystal” dishes my extended family owned were pressed or maybe cut glass. I don’t know what I thought before. That they mined big chunks of crystal like they do marble or jade?
@MonkeyJedi99
Жыл бұрын
If I remember correctly, truly clear glass is a fairly modern version of the material. I have seen some very old glass that was all sorts of colors. Even the 70+ year old windows in the house I grew up in had a little bit of color to them. They had ripples too, being made before the assembly line method of floating molten glass on molten tin. (It's tin, yes?)
@cobalt1754
Жыл бұрын
Ayy, the Rakow Library is great! I've also been to CMoG. Took Bill Gudenrath's class.
@Just1Nora
Жыл бұрын
CMoG has a KZitem channel with guest artists live. Just in case anyone might be interested and not know.
@radRadiolarian
Жыл бұрын
also, river water dissolves away most of the other minerals, while quartz is the most resistant to weathering, which is why they're usually mostly what's left by the end of the river
@garetr
11 ай бұрын
Not every day in 2023 that I see a Davesprite profile pic. Nice!
@mrcriminalpants
10 ай бұрын
But if we didn’t turn them into sand mines, what would we have to pay them back for?
@eetoved1758
9 ай бұрын
Yes and as a former geology major, I'll add that it's not just the mechanical process of the water that the sorts out the silicon dioxide, it's actually some long-term chemical processes as well, that remove silicon dioxide from being parts of other molecules, other minerals. It just has the stronger chemical bond. It's all so beautiful to me. It's like it's all alive even though it's super slow.
@TinkerManMick
10 ай бұрын
Love how excited you got at "the best part" Hank 😂
@dopemil
2 ай бұрын
“I have a questions about rocks, specifically for the guy who wrote Paper Towns”
@danielbickford3458
Жыл бұрын
speaking of sand mines, aren't there places that because so much sand is taken out of beaches and River coasts have caused some ecological issues and now they set up guards to more or less keep an eye out for sand Pirates?
@GeorgeN-ATX
Жыл бұрын
I remember reading something about at-least one, maybe it was multiple small, coastal village community(s) that had basically overnight gone from extreme poverty to incredibly rich because they are now selling their sand which is needed in places like Dubai mostly for their concrete construction but also their artificial beaches. (I believe they've used up all their own natural/local sand for concrete construction.)
@SirMrTreflip
Жыл бұрын
If I remember correctly this was in India. There's a sand shortage there, so people need to watch out for sand pirates
@AndreaCrisp
Жыл бұрын
Maybe the citizens of Florida are stealing it? They've needed to truck in sand for years to keep the beaches... Well, beaches. Denying the global climate crisis is not in their best interest, but... 🤷🏼♀️
@Ginger_Sweet
Жыл бұрын
Our technology is using a fair amount of it
@dragonxlove
Жыл бұрын
….not just for glass….concrete, damn it do humans love their concrete.
@Random3716
Жыл бұрын
Glass is mostly made of silica, with an alkalai salt such as soda ash or pot ash mixed in during the glass making process to lower the melting point. We also sometimes add other things to add other properties like boric oxide to make heat-resistant glass. Sand has a lot of silica in it, just like hematite has a lot of iron in it. In the same way that heating iron ore in a blast furnace removes impurities in the iron ore to make molten steel, heating sand to around 3100°F or 1700°C turns sand into molten glass with fewer of these impurities. If you look at a lot of glass, you'll see that it has a green tint, which is caused by impurities that weren't completely removed. Sometimes we intetionally add metallic oxides as impurities to tint glass. This is how stained glass is made. A lot of bottle glass has had iron oxides added to give it a that familiar shade of brown. TL,DR: Sand is basically glass ore. It has clear stuff in it, and to make glass we heat it up to get rid of most of the not-clear stuff, but when we want glass to be different colors we add in more not-clear things.
@mattgonzales774
Жыл бұрын
this was all very new and interesting information for me, thanks for sharing! :) i always wonder when i see it tho - why does the tldr go at the end of the comment after all the info is done being read? wouldn't it make more sense to be at the beginning, and if the reader is interested in more details they can continue reading and if not they still got the basics of the premise with some sense of perceivable saved time?
@kubaGR8
Жыл бұрын
"In the same way that heating iron ore in a blast furnace removes impurities in the iron ore to make molten steel" Chemist here. As far as I know, what a blast furnace does is reducing the various iron oxides making up iron ore into metallic iron. Typically, this process uses coke (pure carbon coal), which burns up in the blast furnace turning into carbon dioxide, which then undergoes the Boudouard reaction forming carbon monoxide, which then reacts with iron ore forming carbon dioxide again as well as iron-carbon compounds, which later can be processed into steel. Flux stone is added so that any resulting products that aren't the heavy molten iron will float to the top and be easily separated. Point is, iron ore actually undergoes a chemical reaction with carbon to form metallic iron (it actually forms iron-carbon compounds but yeah) By comparison, when you make glass by heating a mixture of silicon dioxide and additives past its vitrification temperature, no significant chemical reactions really occur. Silicon dioxide is a very non-reactive compound and only reacts in specific conditions. What actually happens is that the silicon dioxide transforms from a crystalline form into an amorphous form, which is very, very different to the process that turns ore into usable metal.
@jht3fougifh393
Жыл бұрын
@@mattgonzales774 It's always been that way, and it has to do with the source of the term (which is unique to the internet, so far as I remember). The idea is, if Person A posts a lot of text, and Person B doesn't feel like reading it, they scroll through and simply reply to them with "TL;DR". Means "too long; didn't read". Usually this was just a dismissive comment, but in any case, it resulted in people preemptively adding a mini summary for those who may not take the time to read a long post. It's at the end because it's a begrudging add-on for lazy people. That's traditionally why this was done, and it's the standard that stuck around.
@walkinmn
Жыл бұрын
I thought the slight green tint on window glass was on purpose (added with some metal) to create glass that doesn't let too much UV light pass through
@MrMegaBadazz
Жыл бұрын
@@walkinmn Pure glass in and of itself blocks ~99% of UV-B light. Green and brown glass (iron, sulfur, carbon additives) better absorb UV-A light. So normal glass prevents you from getting sunburnt, and green/brown glass prevents your beer from getting skunky. The slight green tint in window glass is from iron impurities in the glass. It doesn't really have any benefit unless you like the way it looks, and it is extremely hard to remove. Fun fact: medieval Venetian glass makers would add manganese to their glass to counteract the green tint from the iron to make the glass appear more clear/pure but with an almost unnoticeable grey tint. This glass is called Cristallo. What they didn't know was that the manganese would change oxidation states (change the number of oxygens it bonds to) when exposed to sunlight for an extended period of time (multiple decades/centuries) which turns the glass pink/purple. You can witness this with some the glass chandeliers at the Palace of Versailles. Another example of this phenomena is glass bottles made in the US from the late 1800s to early 1900s.
@Dreammeditaterepeat
11 ай бұрын
I freaking love that you answered him. That on it's own is worth a like and subscribe.
@juliomendoza5050
Жыл бұрын
Love this guy. His D&D shorts are the best. I’m so glad he beat cancer. The world was ready for him to be gone
@demonwolf8024
9 ай бұрын
That one small grammatical error changes the whole meaning of the comment.
@agentmueller
9 ай бұрын
@@demonwolf8024Lmao
@dumbnoodleman
8 ай бұрын
you should re-read your comment @juliomendoza5050
@tea31220
8 ай бұрын
...and yet
@FFKonoko
2 ай бұрын
+Not. Right?
@kennethsawyer117
Жыл бұрын
I love how you answer questions like it's a conversation
@TheEzzyMaster
Жыл бұрын
Only Johnny Harris could make a simple hank green question seem more complicated than it is
@Soul-Clutch-Man
Жыл бұрын
Shills do as shills do
@cIoudbank
2 күн бұрын
@@Soul-Clutch-Mancan u prove that claim
@Soul-Clutch-Man
Күн бұрын
@@cIoudbank do I need to? There’s already a word used to describe people whose morals and ethical code have been compromised by money: they’re called shills.
@cIoudbank
Күн бұрын
@@Soul-Clutch-Man yea u need to, i can say that ur mom is godzilla, but unless i can prove it then it’s just a valid label insult
@gr6e
Жыл бұрын
"I'm excited to tell you the answer" is my absolute favorite teaching method
@kittymeowmeow93
Жыл бұрын
I love the back and forth multi question explanations!
@Tefans97
Жыл бұрын
Additional info: it's not just the physical sorting by rivers that purifies quartz, the other minerals are generally more susceptible to chemical weathering
@FartInhalerSlamPoetry
Жыл бұрын
As someone who worked in a sand mine for 7 years. I would love to see you talk about the difference between "river" sand and "proppant" sand.
@rvllctt871
9 ай бұрын
Thanks for the question. I learned something, well two somethings, today by looking it up.
@BadgerExploration
Жыл бұрын
This is so accurate as a gold prospector and a person who reads the rivers for this particle and density separation it’s really fascinating to hear it explained for glass!! Nice share!
@guss_guss
11 ай бұрын
Great short! 👏 👏👏 Love this style of editing. ❤ Enjoying the DnD action too! The back and forth of information you and Brennan spill to each other is like an encyclopedia competition! Very entertaining~😁
@forg0tten
Жыл бұрын
This video definitely 'cleared' some things up for me.
@alfiemillersharp
Жыл бұрын
Heh, nice
@forg0tten
Жыл бұрын
@@alfiemillersharp 😆😆
@drworm5007
Жыл бұрын
It shattered some misconceptions
@Lilith_The_Earthling
Жыл бұрын
@@drworm5007 All these glass puns are *cracking* me up.
@meepthesheep2904
Жыл бұрын
I love the guitar that says "this machine pwns noobs"
@thomasmann3560
Жыл бұрын
Word! It's sick!
@pickyyeeter
Жыл бұрын
What a world we live in where sight gags can reference both old school internet slang *and* Woody Guthrie ❤
@blakksheep736
Жыл бұрын
Seeing that "pwns" contains a w and no vowels, I like to think it's Celtic.
@Jake9066
Жыл бұрын
@@blakksheep736 yeah, I could believe that pwn was Welsh
@mndmndmrock
Жыл бұрын
Didn't one of the Green bros also have a "Thus Machine Kills Fascists" sticker on their laptop back in the Crash Course days??
@jeanlapoint8297
2 ай бұрын
I love how Hank gets all excited over the right question!!
@tic857
26 күн бұрын
Hank is such a treasure in this world where he never laughs or ridicules anyone for their science question odd or not. Because people do not stop wondering about the natural world after the whole "Why is the sky blue?" stage of life. Hes made it such a safe space for adults to ask their little pondering question.
@Imfineprobably
Жыл бұрын
Dude has more brain storage then my computer
@Monkeyface678
11 ай бұрын
I think everyone's brain storage is greater than a computer's
@Greg042869
11 ай бұрын
You store brain in your computer? Sick.
@kvonkirk2340
9 ай бұрын
There is no hope left for humanity comments like this prove it.
@mrmagnamalo7864
9 ай бұрын
Every human brain has way way more than any supercomputer
@BarneyGumbl3
9 ай бұрын
OR, (and hear me out, this may be a wild statement) he just researches the topic before answering questions. I'm sure infinite memory like you suggest is more likely though.
@JohnDoe_69_420
Жыл бұрын
The crossover I never knew I needed.
@pakoutac
Жыл бұрын
Johnny makes good videos but a lot of misinformation in some of the historical ones
@lizzyscorner7967
Жыл бұрын
@@pakoutacto be fair though, “history” itself is full of misinformation as well. Yes things should be better researched. But sometimes we’re still only gonna be getting half (or even 1/4) of the story.
@djfedora7161
Жыл бұрын
Cia Johnny meets Oppenheimer colorized
@Ldawg42069
Жыл бұрын
@@lizzyscorner7967when you’re a past journalist and very popular youtuber, you kind of owe it to the public to be as accurate and unbiased as possible.
@vito7428
Жыл бұрын
@@Ldawg42069Johnny isn't anywhere closest to being the worst example of popular figures spreading misleading information intentionally or by mistake trust me. There are bigger fish to go after for misinformation than him
@rock_oclock
Күн бұрын
"I'm not sure what you mean" is the response I expected from this guy
@khaightlynn
Жыл бұрын
I just discovered and started following Johnny Harris a few days ago, and its soooo nice to see you two are already acquainted. Ill just sit here and listen to yall chat about just about anything 😊
@Bungadoom42
10 ай бұрын
Please do not listen to him, Johnny Harris is a shill for wealthy corporations
@justinhobbs8646
8 ай бұрын
Johnny is a cia Schill bot
@ghfudrs93uuu
8 ай бұрын
You know he's CIA, right?
@khaightlynn
8 ай бұрын
@@ghfudrs93uuu I've discovered that since learning of his existence when I posted this. Thank.
@stalesaltine
8 ай бұрын
Johnny Harris is not worth following, basically just reads the wikipedia page and omits key details :/
@juanluismartediaz3993
Жыл бұрын
Hank, you forgot to mention that the clearness comes from the crystal state of the silicone dioxide. Glass is in an amorphous state, not crystallized silicone dioxide.
@MrMegaBadazz
Жыл бұрын
Pure, crystalline SiO2 is also clear like glass.
@GeminiS...
Жыл бұрын
These are the crossovers I need.
@mitchellcupp317
Жыл бұрын
For real
@saifmohamed9592
Жыл бұрын
No cap
@ApoloniaJones1976
Ай бұрын
This was such a treat. More Hank/Johnny crossovers, please.
@feliciahartyful
7 ай бұрын
When I was little, I had Bill Nye. As an adult, I now have Bill Nye and Hank. 😊
@superschmolz
Жыл бұрын
As an archaeologist, quartz is one of my favorite inclusions in ceramics!
@RobespierreThePoof
Жыл бұрын
Art historian here. Not a glass and ceramics specialist, but i think i would have to agree with you on quartz.
@Muzzino
Жыл бұрын
Glass made from lightning striking sand is known as Fulgurite
@Greg042869
11 ай бұрын
Glass made from a meteorite strike is called Moldavite.
@BluntStuff
10 ай бұрын
These are always all great, but the conversational format really adds a feeling of production and story development rather than simply trivia-time. I'm here for it
@OatPancake
9 ай бұрын
Never thought I needed these two in the same universe
@Leadvest
Жыл бұрын
I actually really like this subject. You can turn silicon dioxide sand into fused quartz, after purification. It's used in labware, and uv florescent lights. Since soda-lime glass, the stuff we think when glass is mentioned, is pretty good at blocking UV. Fused quartz isn't used in as many applications as glass because it's less economical, and hard to work with, because it's melting point is much higher. A lot of what makes soda-lime glass work is the flux, soda-lime, that lowers its working temperature down to something manageable, but still hardens clear. And don't get me started on tempering.
@cobalt1754
Жыл бұрын
As someone who's both done furnace glassblowing, borosilicate flamework, and worked as a scientific glassblower with semiconductor-grade quartz, most labware is made of borosilicate glass. It's a lot cheaper than quartz and has a much lower melting temperature. Quartz is mostly used in the semiconductor industry and xenon short-arc lamps. It has a much higher thermal shock resistance (you really don't have to anneal small objects), as well as lower chemical reactivity. The coefficient of expansion is much lower than that of borosilicate glass. We used a mix of hydrogen and oxygen to work seals, and oxypro for fire polishing. We had a polariscope in QC to check for stress. Borosilicate glass has a CoE of about 33. You still have to anneal most things, but you can still put a flame to it without it cracking. Most people use oxypro torches (bench burners) and have a small annealer in their studios. For soft glass (CoE 96-104, usually) almost everything except the thinnest objects have to be annealed. It has the least thermal shock resistance, and is the cheapest to produce. Our annealer was set to 965° F and was on a 12-hour annealing cycle.
@Leadvest
Жыл бұрын
@@cobalt1754 Cool stuff! Thanks for expanding on that. I've done my fair share of ogling organic chemistry sets on online markets, and videos of lab glassware blowing are incredibly fascinating.
@ModestMang
Жыл бұрын
Am glad you are happy to share your knowledge!
@Kamehaiku
Жыл бұрын
Earth gives us a gift, we burn the house down.😮
@ashendude3394
Жыл бұрын
Hey, that sounds like my cat!
@Fathom_VT
Жыл бұрын
twitch chat be like: KEKW goofyah house
@johnnobody3078
Жыл бұрын
Literally The Giving Tree.
@dsdy1205
Жыл бұрын
which is also why I never understand when people complain our population is too big. It's like owning 2 dogs and complaining the house isn't big enough for all of them because you didn't bother to potty train them or pick up their turds, and now the whole house is full of turds
@BenutzerWalter
Жыл бұрын
@@dsdy1205 I'm not sure what this is supposed to mean, could you elaborate? Sorry lol
@anomboing
2 ай бұрын
This is my favorite format of shorts lmao
@artscrafts4685
9 ай бұрын
Thank you for always answering our questions ❤
@RobMarchione
Жыл бұрын
That is amazing. Natures really got it all worked out and we just tend to muck it up.
@Betlejuse420
Жыл бұрын
That's what us humans are good for, ruining things.
@Treviisolion
Жыл бұрын
Nature has worked out some things for us, but not everything. Rare Earth minerals for example are extremely useful for all sorts of purposes, and despite the name they’re relatively common as far as elements go in Earth’s crust. They are seen as likely critical pieces for transitioning towards a carbon-free future so having some large deposits for us would help us out in reducing our environmental footprint. Nature however has not done that for us. Most of those elements are fairly evenly mixed throughout the crust and thus would require us tearing up millions of pounds of rock for small amounts of the elements, except for a few rare places where we mine so much of another mineral that we get decent amounts of the rare earth metals because they’re of ever so slightly higher concentrations there. Where nature has worked things out for us, humans have been taking advantage of that for millennia. Everywhere else requires a lot more hard work on our part.
@0oShwavyo0
Жыл бұрын
Nature most certainly does not take that sorted out silicon dioxide and then turn it into glass lenses that can focus light from far away so we can see things.
@valflerm3769
Жыл бұрын
Thank you for asking this question-- I have always wondered about the process of turning sand to glass. Thanks, also for the answer, Hank.
@rzmonk76
8 ай бұрын
I love this so much! It comes full circle explaining why pirates dredge sand in water to make silicon, but Saudi Arabia can't use its sand for microchips.
@Lexi-wi4it
2 ай бұрын
Hank Green is our real life Doctor Who and I am delighted every time he graces my screen with his presence. 🥰
@stickmcskunky4345
Жыл бұрын
Made my morning seeing Hank and Johnny in a single video. ❤
@ferretyluv
Жыл бұрын
I remember back in college when I took a ceramics class as my art elective. My teacher asked if anyone knows what glass was made of. I raised my hand and answered “silica, soda, ash, and…um… lime!” Because yes, I was that kid. He liked that.
@Metal_Master_YT
Жыл бұрын
I too was that kid, I loved the science questions.
@gaetanodepaola2ndchannel179
11 ай бұрын
Sand Mojito
@x3TripleAce3x
11 ай бұрын
Now I want a glass of lime soda
@Metal_Master_YT
11 ай бұрын
@@x3TripleAce3x lol nice xD
@KnowYourQuestion
20 күн бұрын
Lol. "A question for Hank Green and Hank Green only" How many times in my inner life have I wanted to throw out that war cry!
@johkonut
Жыл бұрын
I never really thought about how grains of sand are mostly clear
@NobodyNowhereKnowhow
Жыл бұрын
I love how excited Hank gets when he knows the answer to a question.
@miranda13c
Жыл бұрын
This reminds me of the movie Sweet Home Alabama when they’re on the beach during a storm so the lightning strikes the sand and it turns it into these incredible glass sculptures. I watched that movie when I was young whenever it was released in 2002 (I still watch it whenever it’s on because I love it so much) and it took me a long time to accept that lightning really does do that. I refused to believe it lmao it’s just fascinating. Highly recommend that movie for anyone who loves Reese Witherspoon and funny romantic comedies with a great cast. Everyone who worked on that film did a great job! 👏
@Mr_Djung3lsk0g
Ай бұрын
Thank you Rivers, you were always my favorite member of weezer
@rowthenplays984
3 ай бұрын
I love how it looked like a back and forth between you two for a little bit
@rorynorris4248
Жыл бұрын
Love your videos, you put so much happy energy into explaining things in such interesting ways!
@justlittleolme7977
Жыл бұрын
I love your answer and your delivery!
@hayze_ablaze
2 ай бұрын
I love the editing into a dialogue. This made my heart happy today.
@Ae-ne5iy
Жыл бұрын
I love seeing spots where lightning has struck sand and left a perfect walking step of once a molten blob of glass
@TheWeirdAnimationGuy
Жыл бұрын
Hank, why in like a plasma ball when you rub your hands against it and get static electricity why does it have a smell
@jacoL8
Жыл бұрын
Out of all the people who would ask, I honestly didn’t expect Johnny lol
@davidt3563
Жыл бұрын
One of my favorite deep dives was looking how light passes through glass. It forever changed how I looked at windows.
@poprocksncoke527
Жыл бұрын
Totally unrelated to sand and glass...just noticed your guitar and the reference to Woody Guthrie...excellent...just excellent.
@flashcraft7412
Жыл бұрын
A CONVERSATION??!!!?! This is weird!
@daniel6678
Жыл бұрын
god geology is so cool
@Texicus_Reddicus
Жыл бұрын
massively underrated subject, apart from the whole oil thing.
@vannisworld
8 ай бұрын
Ive always wondered this, buy never knew where or who to ask. Thanks for the clarity!
@biggreenavocado
2 ай бұрын
I love how they just got into a conversation
@voltsu
Жыл бұрын
Why can we only use beach and river sand for glass and not deserts?
@margaretteragram9235
Жыл бұрын
Sand needs flowing water to sort it naturally into pure deposits of the clear silicon sand that is needed for glassmaking. Desert sand will be all sorts of rocks, not just the ones good for glass.
@Smcsnacks
Жыл бұрын
Because half of desert sand contains over 90 wt silica, making it less feasible for use as raw material for glass due to high melting temperatures.
@stormveil
Жыл бұрын
Money. It's just cheaper.
@greg5145
Жыл бұрын
Fun fact, most glass has much more than just sand. Limestone is used, among other things, when melting it. Which is why recycled glass can’t be mixed. (Because mixing it causes structural problems)
@Smcsnacks
Жыл бұрын
@@greg5145 Fun fact all sand, even desert sand, was at one time washed in by oceans,rivers, or streams.
@mrbfros454
Жыл бұрын
Oh! Johnny and Hank in one short! Love you both!
@jelly.212
Жыл бұрын
Yeah keep worshipping the liars
@lordxon7236
3 ай бұрын
Hank be telling us the product needs to have no impurities
@2ndai385
Жыл бұрын
Can glass be turned back to sand?
@thoriated
Жыл бұрын
Beach glass. Glass will break and erode back to small particles with natural weathering action.
@MrMegaBadazz
Жыл бұрын
Yes, but it is a more involved process to turn glass back into a crystalline solid that can be crushed into sand.
@jynnsomething4617
Жыл бұрын
The answer is yes. BUT. 1) It's an incredibly expensive sand to buy right now. 2) It is going to take quite a bit of time before we can use it in construction materials (especially concrete) - which is the number 1 consumer of sand. I spent some time playing with it in the lab, and it has a very low surface roughness and it's typically very round. There are silica sands that are the same with the same problem. When you have low surface roughness, the sand likes to sink, which makes a concrete surface really shitty and dusty because sand is really the major reason why concrete is hard. We have additives we can use to help with suspension, but those are very expensive too and can only help to a point. The other issue is something we also experience with silica sand. You need a mixture of sizes, some types of concrete are very difficult to use if you just have a singular gradation vs a mixture of coarse and fine sand. And when glass is crushed to make sand, the gradations are separated, so you have to pay for it to be blended. It makes it all very expensive. But we're running out of sand, mostly because of concrete, so we're going to need a solution at some point.
@szwicker4749
Жыл бұрын
Hank green is that boyfriend who all the other girls want because he is the inbodiment of a golden retriever who put on a tie, glass, then went to college to become a smart pupper
@geekbride77
10 ай бұрын
I get so excited when he says this is actually the best part. Unusually means something awesome is coming next and I’m about to learn something.
@TaliyahP
11 ай бұрын
The part you left out (and really missed on answering his question in the first place) is that sand collectively doesn't appear clear cause each individual particle is scattering light in various directions creating an opaque appearance.
@SammonPuolustaja
Жыл бұрын
Now we need Stakuyi responding with the history of glass!
@corgi_shark2871
Жыл бұрын
Nice glass
@BowmanBro
11 ай бұрын
Crazy to think how hard you were fighting and we didn't even know... Love ya hank
@kxjab
16 күн бұрын
it is absolutely crazy how much stuff in nature literally is just perfect for things only humans would want or need.
@arturorocasimmonds1865
Жыл бұрын
Johnny being in your video might just put you an inch above your brother's.
@TinyOasis
23 күн бұрын
He asked "Why don't we just melt the rocks?", that is actually how the process is done. I toured a factory once, the machine was about 400 ft long from where the sand augured in, to where the sheets of glass was cooled solid. If I recall correctly the furnace portion was 1200 deg F.
@Camietta13
2 ай бұрын
I learn more from your channel than I did in 16 years of schooling
@ron_j_son
Ай бұрын
I love that these 2 did this!
@Fionas_planet
9 ай бұрын
I love how he’s so genuinely happy to talk about science 💗
@daviclemons6910
Жыл бұрын
"I'm not sure what you mean" immediately tickled me and I cackled so loud!!🤣🤣
@ezrahackman840
9 ай бұрын
I love how everytime, its somebody who trully thinks they are gonna stump him but in reality they just seem fumb
@savageantelope3306
11 ай бұрын
Most epic crossover please do another one this was hillarious
@kek207
Жыл бұрын
Rivers are also dug up to collect massive amounts of sand for construction
@franciscodecarvalho2366
4 ай бұрын
Brazilian geologist here, fluids separate stuff by size and density, yes, that's why sand deserts usually have soft and uniform sand in the dunes. But when we include water, another very important aspect of separation of minerals appears in the equation, intemperism, which basically is (in the case of intemperism caused by water enviroments) chemical changes to minerals, feldspars turn into clays that turn into oxides, like iron or alumnum oxides. The new formed clay minerals will be smaller, and that's where separation by mass and size comes in, but if it weren't by chemical intemperism then beaches would have particles of all kinds of minerals. If anyone has corrections or questions about this comment please comment here!! And any other question about Earth sciences too, I will try tô answer it to my best
@annieannderson
8 ай бұрын
Ermahgerd! 😆 Two of my favorite KZitem creators in one video! I've been watching each of you for close to 10 years! And I am exponentially smarter because of it. 🙌🏽💓🙌🏽 Thanks Hank.
@christiaancoetzee1696
7 ай бұрын
Not just a sand mine but a wonderful mixture of our various kinds of waste
@BookGuy1
3 ай бұрын
My school made reading your book "turtles all the way down" mandatory starting this year. I enjoyed it, very good book, nice job.
@cadendance976
11 ай бұрын
I read somewhere that companies are replacing the sand with recycled glass dust from factories and other processing plants. The idea is to support the exosystems as well as allow the development of the needed sand to accumulate. This synthetic sand could also pose a viable replacement for riverbeds
@azazelblackfire816
11 ай бұрын
Very calm, didn’t mock the guy for not knowing, you good sir are now a certified gentleman. :}
@macathaintinney9327
Жыл бұрын
i fking love you and appreciate you!! never give up never give in!
@BigBoiiLeem
11 ай бұрын
Two of my favourite Internet people, in one place? Yes please
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