Is Glass a Liquid?
Vložit
- čas přidán 14. 07. 2024
- Stained glass is thicker at the bottom - so is it a liquid? Earth's mantle enables plate tectonics, so is it a liquid?
Check out Audible: bit.ly/AudibleVe
Sign up for the mailing list: www.veritasium.com
Pitch drop experiment: www.thetenthwatch.com
Thanks to Meg Rosenburg for scripting and animation, Raquel Nuno for filming and Aaron White for script consultation.
Update: they DID finally get a pitch drop on film
I'm guessing that is a different experiment? Found some sites saying it dropped 2013 and was caught on film... but this one had last drop 2014... plus if you look at the stream now the drop is pretty big
@@BeaDak I think it was a different place, and it was recent, after this was posted.
@@rex8255 ah okay... for a second I got really annoyed that I missed such a big event like a drop of pitch falling by a day :D
Lol i saw that and trusted the internet to have commented that. I have not been disappointed
Link
i would be so feaking mad if i missed the pitch drop getting some tea.
I'd be even more mad if the pitch dropped into my tea.
I want some tea now
i'd be just as mad if i dropped the tea in pitch
Get yourself a monitor with livestream (super exciting channel, I'm sure), a bedpan, a comfy chair, and prepare to sit there for 12 years or so. And don't forget to keep the tea kettle within view of that monitor. . .
How could the pitch drop get tea?
i know...
...bad joke...
When I was doing a graphic design degree program, I was taught that glass was installed with the thicker end at the bottom because of a design principle called visual weight. As the principle applies to this situation, glass that is thicker on top looks like it is going to fall over, while glass that is thicker on bottom looks stable.
Thanks for that comment. The video gave an explanation for why we observe the thicker part at the bottom "it was purposefully installed that way", but didn't explain why it was installed that way. Your explanation seems plausible.
that might be the case with stuff like stained glass.
old mouthblown panels were made by first blowing it into a bubble, flattening that bubble by rolling it on an incline. blowing some more etc, until you get a roughly 1m long bubble cylinder around 30 cm in diameter. cut the ends off, cut it lengthwise. and then pop it into a straightening kiln.
and that is sortof the important part. in the kiln the cylinder is opened up, but as it cools it has a tendency to warp again.
thicker heavier parts tend to stay straight while the thinner lighter parts curve up a bit.
(that much is what i have been taught, havent actually seen it happen but true or not, the thick parts are straight(er) while the thin parts can be warped)
the thick side down is actually about installation. you first put the straight(er) side down, nail it in place with a runner. and then you take the top runner and press the glass straight against the frame with it (glass bends surprisingly much before it shatters, specially thin glass, but its also part of the reason why its common to see corners snapped on older windows).
also if you ever remove old mouthblown glass panels, they can still be under tension. always remove the top and sides first, taking care that the top can actually pop out when you do.
but the other way around, if you remobe the bottom and sides first leaving the top one last, the bottom of the glass can pop out of the frame as well, and itl fall since its not supported or carried by the frame anymore.
another thing that might be behind the glass being liquid myth is the timeline of development.
old mouthblown glass has a lot of bubbles, its wavy and looks like its flowing. it was before it cooled down.
the next step in the glass evolution was to pull it upright between rollers, which leave a slightly wavy but straight waves kinda pattern, i was instructed to install those pattern upright, its much less disruptive on what you see thu it that way. horizontal warping just looks bad.
and the current way of making glass, "float" is the marketing term for it, it is molten glass floating above lead and i forget what else. and the speed its pulled from the furnace defines the thickness of the glass. float is more or less optically perfect without lensing or warping effects.
@@cwell2112 Alternative hypothesis: Take anything with a larger end and a smaller end.
See which end is more stable when placed on a surface.
This isn't about the _appearance_ of stability, like the OP mentioned.
This is about actual stability.
Take pyramids, for example, there's a reason the pointy bit is at the top, and it's not the _appearance_ of stability.
Thank you for the explanation
@@Mythraen Can't confirm of course, but I think they probably know that, but used 'looks more stable' because the glass is held in place by the frame, so it would not have made a difference. I assume they were trying to say they built it in a way to archive visual stability primarily, while structural stability may have been neglectable in this case.
Those two things can occasionally not be the same. For example an object with an externally invisible very high center of mass may look stable, but is not.
I read the title as "Is Gas a Liquid?" and spent the whole time waiting for an explanation
lmao
i was looking to see if i was the only one.
When it went all around on a tangent about glass you probably thought like "Today you are kinda like VSauce, but I enjoy it too"
But yeah gas is a liquid because particles can flow past eachother and it has no definite shape but like liquid isnt a gas because it has a definite volume
@@Penguin-1966 gas is a fluid, not a liquid.
I was taught that glass was a liquid by my school teachers on a field trip to a glass blowing studio. I was told that a glass bottle would flow into a puddle over time at a measurable rate. I never questioned it. Stuff like this makes me remember the EA tagline "Challenge Everything".
we were tought that the mantel is a liquid. love your vids btw.
always question
Well, EA kinda borrowed that from Timothy Leary, the 60's bumper sticker slogan, "Question Authority." It was a popular button in my 90's college days.
There must be some obsidian in a cave somewhere that is at least a few million years old.
+Oleum Camino
"Actually it's not proven nor disproven yet. "
The claim that glass in the windows of cathedrals built during the middle ages "droops" significantly in 500 or 1000 years HAS been disproven and the evidence was even discussed in the video!
That it might do the same thing in 1,000,000,000 years is not the point, the claim itself was it does so in significantly shorter timespans and that is just outright wrong.
those puns at the end were.....solid
+Drama_Llama_5000 I felt like it didn't quite flow. Maybe towards the end he was running out of gas.
I see what you did there
+GargantuanMonster Yeah and... uh... something about plasma! **runs away crying**
+standingunder Can't come up with a good plasma pun? Maybe it's just not in your blood.
GargantuanMonster Ooooh you sneaky devil...
All these comments from 4 years ago and there’s still an estimated 14 years until the drop.
Didn't he say they happen every decade? So if a drip fell in 2014, that's only 4 more years to go, give or take.
@@sleepyidiot2010 No, the first drip took 8.1 years. The last drip took 13.4 years. Most of the bump in duration was when they introduced air conditioning. ~13 years is it's new viscosity at A/C temperature. The rest of the slowdown is not because it is continuing to lose heat; after all these years, it has reach an equilibrium with it's environment, but because the weight of the rest of the pitch in the funnel is exerting less force to force out the next drip.
6 months ago
@@xungnham1388 i predict a 10yr drip due to global warming
Indpendent01 he literally said air conditioning...
The closing was so... interesting.
"Sometimes the rigid definitions we create for ourselves can introduce misconceptions."
I know it's mostly just for puns, but I feel this line resonates far beyond the world of physics.
ludwig wittgenstein's philosophy.
he was so happy when he cracked up that pun
Yeah.
+Marwan Bayoumi he was like a dj dropping the bass at the perfect time
+Killer97 No he was like John Petrucci playing that massive E chord after the third solo of Erotomania.
+Idi Ootti Why do people even know these things?
+Idi Ootti what language was that?
>When your physics teacher says glass is a liquid but you argue and they say you're wrong.
I know right
***** 36.5 what? Degrees C?
We had a test in chemistry and if you wrote that glass was a liquid u got it right
KIV Productions That's actually fucked.
Arguing with your teacher? Oh, you're one of those kids.
When they first poured the tar pitch resin into the funnel in 1927, how long did that take?
If I had to take a guess, they just heated it up to get it in the glass.
Will global warming result in more drips per decade?!? ;P
@@steve42lawson Nah, they got A.C. in the room. Gotta wait even longer because of that. 😭
The experiment was originally planned by a Neanderthal 400,000 years ago.
@@UntrainableWizard oh ! So it's been dripping for 400k + years...wow... But that AC must have ruined everything....
Very sad times... 😢
6:06 hey! vsauce, michael here
Man nice
I actually tough this was a vsauce video
@@wesleyesq7306 or is it?
@@shobhasingh3505 *music starts*
@@wesleyesq7306 God knows what he might be doing in lockdown!
5:54 you are _way_ too proud of yourself Derek :P
*[Host delivers a pun to the audience and smiles smugly for a few silent seconds]*
*Awkwardly delayed response in the back of the audience:* _"...I get it!"_
+JSQuareD Exactly what I thought xD
+JSQuareD That's exactly what I was going to say.
Thanks Dirk of Veristablium.
Don't you mean Durgavura Dassium?
+xEl Gringo Loco I think you mean Durik of Veriblaserum.
+xEl Gringo Loco Drake from Versace*
+Alexandru-Octavian Badea hello internet the podcast
Duke from the Vatican?
I must be a liquid. Over the years i am my shoulders are getting smaller and my belly thicker
:-o
:0
:0
:0
:0
Technically, yes, becuase blood, water, and also some stuff.
Update: a pitch drop fall and was recorded, but not in Australia
I learn more from you, Vsauce, MinutePhysics etc then I do from school..
+Tristan Hoekstra *than I do from school. 'Then' is when for something comes next, 'than' is for comparing two things. You're welcome ;)
Veritasium Damn.. Did you just... Like.. How could you.
Veritasium I have an excuse though; my native language is Dutch, in which I make more mistakes THAN in English though..
+Veritasium nice one :D
+Veritasium lol u rekt him
2:26 Installed the glass THOUSANDS of years ago ? That's some good glass
Glass has been manufactured back at least as far as 3600 years ago in Mesopotamia, but stained glass came some time later. I suspect he meant to say "hundreds" of years.
very good catch sir
@Thomas Headley Still only hundreds, not thousands, of years.
Kids didn't play baseball back then, glass lasted much longer.
His grasp on reality is a bit weak. He knows much, but thinks he knows everything, and in the process commits some real awesome blunders.
According to Scout from TF2, yes, and it is highly drinkable.
glahrse :)
@@aooga9995 My sandvich is Strong! Scout is Baby.
One fascinating thing is that it can be far more helpful when working with building foundations to consider the ground to be liquid, like honey, just a really really thick liquid...and if you are studying liquefaction, a not so thick liquid.
Now generally speaking, it's not a liquid, but unless you go deep you aren't usually dealing with solid rock, and the particles of dirt, or clay, or sand, slide past each other somewhat like the atoms in a bucket of water.
By extension, designing good foundations can feel very much like designing a boat. There's even an analogous force to buoyancy, soil heave!
There's also this clay structure which is like three dimensional house of cards filled with water. It is solid if you press it down, but sideways motion can cause huge landslides if the formation is on incline. There have been building collapse catastrophes when this happened because no-one knew about this type of clay.
My push up bra is thicker at the bottom, does that mean it's a liquid?
+ladylililala How long have you been wearing it?
+NickRoman lol I don't anymore now that I know it must be liquid
+ladylililala nah, maybe no but I can show you some liquid ( ͡° ͜ʖ ͡°)
+ladylililala Probably not, though I could give you a prime example of something solid, and a prime example of something liquid ( ͡° ͜ʖ ͡°)
yes
Derek was very pleased with his last pun. :D
haha, I swear
Lawl
His sexuality is fluid...just the way I like it
It was very hard to bear.
I laughed so hard because I just said the same thing before reading the comments, looking if someone pointed it out
What if everything is just insanely thin or thick liquid
You have now ruined my life
We only assign names and qualities to things, to better understand them within our concept of the world.
You mean viscous
@@B----------------------------D in that way isn't math also our way of understanding the world?
@@Ronit1302 "a rose by any other name would smell as sweet".
An object, or an object's behavior, doesn't change based on what we call it, or how we categorize it.
An object's behavior _would_ change if you could somehow change the math involved with it.
In a way, regardless of what name or qualities we assign to objects, the math _is_ the object.
Window panes were made different in the past.
Nowadays we have float glass, where molten glass is poured on molten tin.
In the old days I read they had pulled glass.
A rod is put in molten glass over it's entire length, and then moved upward carefully.
The glass sticks to the rod like soapy water, and gets hard.
The bottom gets thicker, because of the glass cooling off fast.
(Glass doesn't have a precise melting point)
When they put the pane into a window, they would put the thicker part at the bottom,
otherwise the thin part would have support most of the weight.
Exactly, glass is not a liquid.
But is cat a liquid
Schoko4craft Some studies have proven that to be true. Cat can be poured into any size or shape box, "if fit, will sit."
*If I fits, I sits
H.C. Brambleflapp That's it! Thanks!
Schoko4craft o
no its a non-newtonian fluid
Thank you so much for making this video! I'm a bit tired of people talking about glass as a liquid. That myth can't seem to die.
+NerdSync Indeed. I recently heard a good description of how that old glass was made and why it was constructed unevenly (because it was spun). That too might be wrong, but if it is true then it has always been known exactly how the glass formed that way leaving me to wonder how anyone could have come up with that wrong b.s. about it flowing in the first place. That's why figuring stuff out is so hard. Not only is reality tricky, but people lie and maybe just eventually forget that they made something up and come to believe it themselves. And there's no simple way to tell if that's happening or not. (Or doesn't seem to be.)
+NickRoman The glass was probably made that way so they could stand it up vertically.
+NerdSync Yeah it's a common visconception
+NerdSync I like your Videos
Stop the pe teachers in primary school trips first, then you’ll see a noticeable difference
Actually lava (even basalt), diverges greatly from the composition of the mantle, the mantle is mostly olivine and pyroxenes, who are very hard to melt, so when something melts it's the minerals that require a lower temperature to do so, plagioclase and clinopyroxene. When we do see parts of the mantle is when magma brings up xenoliths made up of olivine and pyroxenes, completely solid because even the hotter lavas can't melt them.
Great 👍 so lava isn't mantle...and mantle isn't liquid...right?
@@mattiabracali1356 Not at lava temperature
Glad to see you using the University of Queensland pitch drop experiment. Had to go past it every week for my history lecture. 'Twas fun.
No, it's not a liquid. When I fell through my bedroom window I didn't hear a splash.
+IgnemFeram01 So the *THUMP* you hear when you fall onto a block of pitch is actually a splash, just a very slow one?
Penny Lane Very funny. If you watch the video he even says that it isn't a liquid.
***** Thanks. I liked your joke, too.
The only thing I'm not on board with is the "he says pitch is not a liquid" thing. I can only find passages where he says the exact opposite. He of course also says that the distinction is ultimately somewhat academic.
+IgnemFeram01 he said that it was
Dilip Tien It sounds like you forgot to watch the video. He said it was an amorphous solid, not similar to a liquid at all.
"Check out this book, it is about a thing"
How very informative.
+Jeffery Liggett haha I thought about telling more, but I didn't want to reveal any spoilers. I thought about telling you about what happens on page one but it's pretty big... hence 'catastrophic event'
+Veritasium
catatrophic in relative terms
Neil Stevenson is a great Author, so it's bound to be good
"viscous rumors." Indecisive gets the gold star for labeling your puns at the end as solid puns. :)
Older stained glass was mouth-blown and very difficult to make in sheets of uniform thickness. Some stained glass is still made this way. It can vary from 5/16" to 1/16" within a small sheet of glass. The pieces weren't necessarily turned with the thickest part at the bottom. Pieces that vary in thickness can also vary in tone with the thicker parts being darker. They were arranged for aesthetic reasons as much as structural reasons.
But can glass melt metal beams?
+Ariton Debrliev *steel
Noce 9/11 joke
goddamn it
+Ariton Debrliev No. But a republican can
+Ariton Debrliev Depending on it's composition, some glass will melt at temperatures as low as 500 °C (900 °F), others melt at 1650 °C (3180 °F). Depending on it's composition Steel melts at around 1370 degrees C (2500°F) to 1510 degrees C (2750°F). But that's not all, you need to take in acount that steel needs to conduct the heat from the glas in order to melt. So yes, if you have enough molten glas at the right temprature and provided you can pour it on the steel without turning the glas solid, you can melt steel. But it isn't very practical and you would neet allot of molten glass. TLDR: Yes if you have enough, but it wouldn't be usefull in anny way.
The guys watching the asphalt for ninety years tried watching paint dry, but it was too fast; they couldn't handle the stress.
Paint doesn’t dry, it desiccates. And pitch isn’t asphalt or anybody else’s. LMFanechdotalAO
@@mercurieretrograde I wanted to say that. At least the second part.
(5:30) “Only a sith deals in absolutes.” -Grove Karl Gilbert... kind of.
1:04 I never realized the pitch drip setup was so small before!! I've watched the livestream a few times before and I always pictured it being much bigger than that, but I guess I hadn't seen a person next to it for scale before now. Go figure!
It's not really a livestream. They've just taken a photo and they use a program to put changing numbers on it
Here I am, 3am, drunk, learning about viscosity. You're welcome, future me
Sounds like a perfect night :)
Seb B. *_ThErEs SoMtHiNg CaLlEd AuTo CoRrEcT_*
Except your liver, and probably your head if you over drink. You know what... you do you boo. *;)*
I guess you forgot most of it by the following morning, anyway.
Beer is actually solid
when looking at atom level
The re-enactment of fetching a cup of tea and taking a faux sip was truly riveting.
The final literary touch is just awesome! Very smooth or shall I say fluid!
It’s solid I guess
what a smooth flow of puns at the end
I think that they were pretty _solid_ for the _sticky_ situation he was in.
Badumm-tzzz
What a puntastic epicentersode.
+Isaac Thefallenapple haha
+Yaqub Ali All lava is is magma above the surface
Johnnie Vega You learned that from The Simpsons, didn't you?
+Isaac Thefallenapple No that is a true definition of lava
+Yaqub Ali it's solid because of the pressure, once it gets to surface the pressure gets to one atmosphere and the temperature causes it to go liquid. they're two forces that counteract each other - hot things flow because the temperature is movement of their molecules, and once the temperature is high enough, the molecule movement is large enough to break the chemical bonds. pressure, on the other hand, prevents the molecules from moving too much. therefore, under high enough pressure, even molecules of very hot materials don't move enough to break the chemical bonds.
for similar reason, human blood boils in vacuum without changing its temperature - vacuum is less pressure than normal (no pressure at all, in fact), therefore even the standard, "room" temperature of blood is enough molecule movement to break the bonds keeping blood liquid and start changing it into a gas (which is exactly what "boiling" is, the process when liquids start converting into gas).
for the same reason you can make gas into liquid or even solid just by applying enough pressure on them. or without applying pressure, just by cooling them down enough. it's two sides of a swing, the more pressure you have, the more heat you need to keep thing as gas/liquid, and the less heat you have, the less pressure you need to keep that thing solid/liquid. the only "assymetry" is that there's lower limit on the pressure, you can't have lower pressure than vacuum, naturally, and earh's atmosphere isn't that far from vacuum. But as far as I know, there is no (reasonably achievable) upper limit. (There is, kind of, at least for heat, and it's the temperature at which even space itself (not space as Universe, but space as the thing you move through) starts to boil, but it's insanely high, several thousands or milions times higher than the hottest star.)
The video touches on volcanic eruptions, but it would be good to hear a discussion on why lava erupts from an otherwise 'solid' crust/mantle. I suspect many viewers are left wondering why.
+xXRandyGandhiXx nice info
+Kurt Story From what I recall, earthquakes (and by extension volcanic eruptions) happen due to tension in the tectonic plates. The tension builds up energy and suddenly releases all of it, causing damage and shockwaves. Volcanoes have special ducts that allows the molten rock to flow out as lava.
But then again, the whole idea of lava flowing is based on the idea that it is molten. An interesting thought is how there are convection currents within the apparent solid that is the mantle. Perhaps it acts as a non-Newtonian fluid with special properties? Science is weird. :/
+Kurt Story Just to complete the picture (other people here are correct, but not entirely) - there are three ways to melt the rocks of the mantle.
1 - Add heat. This is extremely rare today, as the earth doesn't contain enough heat to do this often. One exception is Hawaii, where a very hot mantle plume is capable of melting near the surface.
2 - Release the pressure. The mantle is only solid at high temperatures if the pressure is also high. At mid-ocean ridges, such as on Iceland, the crust splits apart to expose the mantle. This causes it to melt.
3 - Add water to the mantle. As oceanic crust forms from molten magma, it reacts with sea water to introduce water molecules into the minerals that make up ocean bedrock. When these are subducted under a continent or another piece of oceanic crust, the water molecules lower the melting point of the mantle, allowing it to form magma. Japan is a volcanic island chain created by this process.
+Kurt Story One explanation I've seen in a video about plate tectonics is that subducted crust often traps & drags ocean water down deep where it develops steam under high pressure, causing eruptions where there are breaches near the lava surface.
+SonOfFurzehatt There are other components other than H2O that will decrease melt viscosity as well, say CO2. Though H2O is definitely the best studied and well known component that will depress the liquidus of a melt, especially mafic melts.
Just checked out the pitch drop. Lookin mad close right on schedule! Very cool!
The transition from Liquid to solid is flutent.
For my undergraduate capstone some years ago, I did a room temperature viscosity measurement of glass fiberoptic stands under tension with laser interferometry. We could see if there was any flow exhibited down to a change on the order of a picometer. After months of data, no change. We concluded that lead (from established viscosity measurements) would flow into a puddle before glass based on our lower level of detection. I don't recall the timeframe required but it was not realistic in the slightest. Fun times.
With a difference in chemistry of less than one percent glass can have two very slight differences in the coefficient of expansion so Tiffany had to create his colors very carefully. So when two colors were side by side in the same piece of glass Tiffany's best measurements were not 100% accurate and strain developed. Now a one inch long line where the two colors meet would not expand and contract differently such that you could even measure it. If the glass could move at all it would do so over a hundred years, and yet it can and does still crack on occasion after many years due to that strain.
Veritasium video, life is worth living
Yep
Take a drink every time he uses the word Viscous.
I bet that guy really enjoyed his tea. Bitter sweet, I imagine.
I love how smug you look after telling the final pun.
I think he was still smiling over "viscous rumors".
my like made it 69, no more likes on this one please
*_s c r e a m s_*
I was hoping you were going to bring in mechanical "creep" into discussion. If a solid bends or warps over time, where does that fall in the whole "flowing" and liquid debate?
+MICHAELHICKOXFilms it dont
+MICHAELHICKOXFilms If a material undergoes a deformation over time due to a constant stress and no change in temperature, then it is flowing, however slow it may be. As you may know, this tends to happen to viscoelastic substances like polymer, which behave both like a viscous liquid and an elastic solid. Metals and ceramics don't display this behavior to my knowledge, and so are true elastic solids.
cant you understand the video folks??? he says that some materials that we think that they are solids are actually liquid with extremely high viscosity, he is not saying that all solids are liquids!!!
+MICHAELHICKOXFilms We actually learned about creep this semester in my mechanics of solids class and he talked about old church windows deforming due to temp changes
+MICHAELHICKOXFilms holy crap I found a youtuber I like in a comment section. Nice.
While on a field trip we were taught that glass is a liquid by a glass blowing EXPERT while he was doing a live demonstration of glassblowing. Until now, I never questioned him.
Well Glass IS liquid when you work with it (like the glass blowing guy), but it's solid at room temperature when you cool it down.
about time for the next drop
Are feet shoes?
+Jonathan Guzman No, they don't cover themselves.
+Jonathan Guzman I think someone's feet could be someone else's shoes... but that's a video for a whole different channel.
+Wafflical shoes don't cover themselves
+Wafflical So, is your skin a shoe?
Are underpants penis?
those puns hurt me deep inside.
Stop it, you're making me "crusty"
just go with the flow man.
Water you talking about?
Excellent video. Thanks for dispelling the "glass flows" at room temperature story.
Lol how many of y'all apparently learned this in grade school science? I've never heard the theory that glass was a liquid until this video
Ive heard it my whole life, usually brought up around very old buildings
Our teacher told us in school and we thought he was joking
Glass is a super cooled liquid of amorphous type, according to my textbook. 😂😂
My dad told me -- but I came from a house full of scientists!
@@harveyspecter1855 magma is just a super hot solid
I feel like I learn more from CZcamsrs like you than my actual professors. 🙃
Yep.
Because you aren't listening to your professors.
You only _feel_ that way.
what did you learn? This is all pretty much common sense
Perhaps this info is in a more fun form than hearing it from a boring teacher?! When one seeks out the information willingly, it will surely stick much better than being force fed. imho
Is solid a liquid *
+L Delivery Guy now we're getting to the heart of the matter. It's tough to get everyone onto the same definition of when a liquid is viscous enough to be a solid but 10^13 P seems to be a reasonable cutoff and glass is around 10^22 P
+Veritasium
Wouldn't it work better to define liquid/ solid in terms of phase transitions? At ~1500 celcius glass needs to overcome the latent heat of fusion so that is the point the solid/liquid transition occurs.
+Veritasium Isn't plastic also an amorphous liquid similar to glass?
+Veritasium Pascals? Particles? P?
+L Delivery Guy Can be
He was so bloody chuffed with that last line- look at his cheeky little face 😂
'Right? wrong!'
*intense flashback of VSauce
We didn't discuss the viscosity of John Mainstone's tea.
+ljmasternoob
because I imagine it was very similar to water. :P not interesting.
That's a point.
+Mohogany Guy 1869 hmm or is it? as you add more material to the liquid it becomes more viscous so is quick sand a solid or a liquid? you can run on quick sand (or this case quick tea) but if you stand still you will sink.
Mohogany Guy 1869
If he adds honey to it it may make a difference.
That's right. The center of the earth is made of kittens.
Their cuteness warms up the stone mantle around them :3
@@ulfvonweimuller4433
Yes hell cats.
GRAB THE DRILL! WE'RE GOING TO THE CENTER!
Lemme just grab a cup of tea
Asphalt: aight imma head out
maybe the reason the old stained glass is thicker towards the bottom is over those many centuries, they have been exposed to enough heat to slowly return a few molecules of the glass to a liquid state here and there. (just like how water doesn't have to reach boiling point to have some evaporate, just needs enough energy in a handful of molecules for it to break away from the rest of the liquid and turn into a gas). particularly with the high lead volume in old stained glass, a nearby fire (like a bonfire or the like) could potentially cause a miniscule shift towards liquid state from the heat, and over centuries having even that tiny amount melt, slide down a bit before rehardening, over and over, could cause it to build up towards the bottom. The telescopes are probably more likely to be away from high heat sources, plus the glass used in telescope lenses is very likely a different composition of materials (there are a number of types of glass from different chemicals, and even the same base types made from silica primarily can have other impurities added in)
Man walked off the screen like he dropped the HARDEST BAR OF ALL TIME!!🙌
Hahaha Lol
Why Goku wearing Akatsuki dress LOL.
@@unenthusiasticsalt2123
A year later nobody got that joke..
2:04 Glass: I don't feel so good....
Def underrated.
Mr Starch....
Last drop was in april 2014, its close to a decade!
Great video, very informative!
"No, Patrick, glass is not a liquid." ~Squidward if he were a scientist.
"Iron is lot liquid either."
I can hear that
@@schwarzerritter5724 Well actually, iron can be a liquid though. It can melt and can still be called iron. Glass can melt, but it's not really considered glass anymore since molten sand has the same chemical structure.
at 5:54 we learned that derek only made this video to drop a sick pun
Haha, you looked so pleased with yourself with that last pun 😆 👍🏼
Please go to the Corning Museum of Glass during a live stream, love to hear you and Amanda converse!
As for the Audible recommendation, Neal Stephenson's _Snow Crash_ is superb!
+Paul Keefer All of his novels (that I have read) are superb.
The pitch experiment's time lapse is so long and fast that the clock is defying the laws of time.
What do you mean?
Triple259772 On the video, near the start, it shows a time lapse of the experiment. If you look at the small green clock, you can see the second hand turning anti-clockwise.
Excellent video, thx for the sharing.
I legit was wondering about this question today and it came out on my feed!
I literaly just corected my teacher...and he gave me "the look" dont know about my future :/
theTime lapse Chanel I did that in 8th grade, he tried correcting me back.
tried in 7th, teacher said a "study" (I think?) proved me wrong
Is I Isi
The 'study' he referred to was a physics thesis which has been since proven fallacious.
Stained glass made by hand has a very variable thickness which the artist exploited as a means of controlling the transmittance... the brightness of the areas of the picture. They discovered that by reducing the thickness of the glass used at the top, both the orientation of the piece and the mean thickness of the glass pieces in the image it caused the observer's eye to track upward to follow the increase in brightness...
So... an effect created deliberately to inspire an emotional feeling of uplifting.
Your teacher missed the memo.
on teacher once told us that Saturne was the only planet with rings, i corrected him, i can relate to ''that look''
failandia lol
Felt like that final pun was just to spite CGPGrey.
+losveratos Sounds like more than enough reason to me :p
+losveratos CGPGrey loves to hate. By making him hate, he also loves it...
+Veritasium Just like us British people. If there was nothing to complain about, then we'd *really* be miserable.
Veritasium And we love him for it :)
Alien 1: "Let's liquify this poor man with the lasers installed on our ship!"
Alien 2: "Nah bro, let's wait thousands of years and he will liquify himself."
That was bad because my brain can't get enough molecules FLOWING into it.
Guess I'll go with the FLOW and stop.
@The Lenny Show No, both of them sucked. Cringe af.
@The Lenny Show well it's been 2-3 years since I wrote that comment and now I think they're both bad. Perhaps we shall agree to disagree. Just please calm it down with the "I'm sure you stole it". Stealing comments is against my principles because I, like many other sane people, believe le Internet points are kinda - um - meaningless (gasp). The only way I might've "stolen" the joke would be if I got heavy inspiration from another comment without realizing it. And I doubt that since I can't find a funny in my joke.
Ahh, this answered a completely unrelated question! I was always wondering about how we know the Earth's core is liquid, and especially how we knew its exact size.
Lol that pun at the end, followed by that smirk. HE KNEW WHAT HE DID
I just realized that for as long as i've been subscribed to this channel I still get giddy every time a new video is posted
This again clarifies an old theory I’ve learned. That materials cannot be classified as solid, liquid and air; rather the material can be defined by the four governing properties of it. It’s rigidity, viscosity, temperature and the gaps inside ( empty space). It’s written in my language as පඨවි, ආපෝ, තේජෝ , වායෝ
Looks like its going to drop soon!!
Oh god that pun at the end
Now I know my science teacher was spewing bs when she said that glass was a liquid.
now you have 68 likes
I guide others to a treasure I cannot posses
not long ago, it was widely believed to be a super-cooled liquid and as such it was printed in all text books. your Teacher had old info.
Yeah I never believed that. Smashing into sharp pieces isn't a liquid property.
When making glass for windows, they blow "a dish", and cut it into squares. The "dish" is thickest at the middel. The middle of it with the broken off bottom of the stem is sometimes used in a middle window in a door.
I’m realizing that saying something false as if its true, followed by “actually, no” is a great way to spread myths
fun fact: the word trolling was first used in a, like, common misconceptions themes usenet community. people would "troll for newbs" by posting things that everyone knew were false, but only the new people would react to because they were the only ones who didn't know the person was trolling. trolling like fishing, not trolling like angry men under bridges. the fact that they used most often: that glass is liquid.
+maggieedna I fact checked myself and discovered that the person who did this the most is the founder of snopes, so thats cool.
+maggieedna that was fun facts! thanks for sharing
+maggieedna I didn't even know there was a verb "to troll" related to fishing! Nice.
that pun...
Thank you! I always suspected that claim about old glass windows being thicker at the bottom was bunk. A. No one ever produced any pictures of these, and B) they may have been installed with a thicker edge down in the first place.
I’ve been feeling a little slow lately. This is just what I needed .
Always a pleasure watching your videos.
Is glass a liquid? No. I'm glad I learned this today
@Dr ROLFCOPTER! ..and heat.
@@Hugo-lm7ed Video is just information.So it is not stupid and your point that Glass is just like any other solid that melts at higher temperature is plain wrong . It is amorphous material so it has 3 stages
Solid---> Supercooled Liquid(Above glass transition temperature)---> Liquid(Above melting point).@SP
& Stupidity is overlooking or dismissing conspicuously crucial information.
@Dr ROLFCOPTER! Mass and pressure could make a solide have a behavior like liquid, but still are a solid, thats was said in the video.
@@Hugo-lm7ed This video is not stupid, a lot of people think that glass is a liquid, one of my teacher said this one time in class.
Toddrick Metzger, I alredy know that glass is not liquid, but I still learn a lot of other things in this video, like about pitch, about center of the Earth and how the lava is solid, and so on.
Just imagine how satisfying it would be to see something finally drip after decades.
DvD symbol hitting the corner times a bazillion
In a nutshell:
Is glass a liquid?
No.
You are welcome.
So you are saying that whole thing I have always heard about glass flowing is a myth?
You should check other things you've been told. There are a lot of BS myths out there. Or just watch mythbusters haha
For some reason, my first reading of your comment made it look like you said "... glass *flying* ..."
Also evolution is a myth. Creation is a fact.
@Engineer_guy _1461
Dude, I'm pretty sure that Jack Gammon was making a sarcastic joke.
No one is really dumb enough to believe that evolution is a myth and creationism is fact. Well, maybe americans, but there are some smart americans, too and I suspect that he's one of them (and that he was making a joke).
@Engineer_guy _1461
I weep for humanity.
I dream of a world where everyone dumb and/ or delusional enough to believe in a magical-sky-wizard (and all the pants-shittingly crazy nonsense that goes with it), goes to live in america, leaving the rest of the world for those of us who wish to live our lives free of delusions. Oh what a wonderful world that would be (though I expect it'd really SUCK to live in that america)...
Optimist: sees glass half full
Pessimist: sees glass half empty
Chemist: sees glass entirely full; half in liquid state, half in vapor state.
+TheYafaShow and? what is the relevance of "that" in this video?
No it isn't.
Engineer: The glass has a double height than required.
SindiPa TaraNa *e d g y*
what if the glass if placed in a vacuum chamber
We like to categorise things, pigeon-hole them. As satisfying and as useful as this is in general, we need to remember that things are often not so black-and-white and that reality does not conform to our attempts at describing it.
yes
Solid explanation