Hey! You’re not imagining things. We did reupload this! Thank you to all the gneiss people who pointed out something was up with the audio before.

@saber1epee0

Ай бұрын

You are so gneiss to clarify that! DFTBA!!!!

@aidankeller1717

Ай бұрын

Holy schist, I did think I was imagining things.

@PrototypeMarl

Ай бұрын

No wonder I was experiencing deja vu

@topogigio7031

Ай бұрын

What's with the clickbait thumbnail that you can't show in schools?

@darkpepsi

Ай бұрын

Can’t take for granite that happened.

People think hard means strong. You know what's pretty hard, glass.

@dannynysus

Ай бұрын

That makes two of us...

@dianapennepacker6854

Ай бұрын

Yeah isn't there like four definitions now or ways to measure strength? Hardness. Toughness. How good something does under tension and then compression. Think there is an other one regarding how it keeps its shape. Or maybe I'm just confusing the tools and their what their measurements are called.

@JMD501

Ай бұрын

@@dianapennepacker6854 compression?

@God-ld6ll

Ай бұрын

hardly 😅

@dianapennepacker6854

Ай бұрын

​@@JMD501Yeah, sorry I meant to say compression and tension. Think there is an other one. Maybe I'm just confusing the tools.

Round of applause for the audio engineer and continued appreciation to the graphic designer in charge of thumbnails

@samstarlight160

Ай бұрын

The thumbnail was excellent! "Oooh cleavage" lol

@algebrainz5989

Ай бұрын

@@samstarlight160 the rockslide video with the thumbnail of a mountain going down a playground slide with hands up in excitement, I hope that worked earned them a hefty raise

@adamrolland2640

Ай бұрын

Thought this video was going to be about Marissa Tomei

@GeneralJoey747

Ай бұрын

Rocks are hard and so am I

beautiful thumbnail

@CompletingTheCircuit

Ай бұрын

This 😂

@Th3F0nz

Ай бұрын

Very attention grabbing.... 👀

The sapphire glass on the watch is very hard to scratch but often easily broken, so I was very curious about this topic!

@SalivatingSteve

Ай бұрын

I noticed the opposite of that with Gorilla Glass branded as the iPhone Ceramic Shield. My iPhone 13 Pro got a noticeable scratch on part of the screen only 2 weeks after I bought it. It’s more durable at resisting shattering, but scratches more easily. I think for a phone it’s better to resist shattering from drops, whereas a watch needs to resist scratches more from brushing against things.

@fwiffo

Ай бұрын

Sapphire used for watch crystals isn't glass at all - it's sapphire. It's actually tougher than most glass, but it's definitely possible to shatter. It's basically scratch-proof though, unless you're constantly banging your arm into diamonds or silicon carbide.

@auroraourania7161

Ай бұрын

@@fwiffoI think the lab grown, clear sapphires used for stuff like that are typically referred to as sapphire glass, even though it's not a glass.

This video rocks. I totally dig it. A real gem.

@nHans

Ай бұрын

Indeed. Very illuminating. Brilliant script and nicely cut video. The colorful examples brought clarity to a tough subject. Didn't just scratch the surface, but polished away the hard inclusions till the facets became crystal clear.

@garybarnes4169

Ай бұрын

You know you're going to hell for these puns, right? Still, I have to admire your stones.

I wonder how many other people left KZread to Google the Eldorado Topaz but never returned for the rest of the video. It's really quite impressive! Why didn't sci-show just show it?

@mayaenglish5424

Ай бұрын

Perhaps the images were expensive. They're a legitimate business not some random tik tok account, they can't just grab whatever music or images they want to use without paying for it.

@tomwatts9822

Ай бұрын

guilty

@Vyz3r

Ай бұрын

​@@mayaenglish5424Nah, there's fair use so that's not it. Even if they're not allowed to use a few images, there's plenty of publicly available pictures of the place.

@auroraourania7161

Ай бұрын

@@Vyz3rFair use is a lot, lot more limited than people think, and unless they were somehow critiquing the image or parodying it, it would not actually be protected. Educating using an image does not count. And by publicly available, do you mean that, or creative commons/public domain? Since someone posting it on facebook or something doesn't mean it's free to use.

@azilbean

Ай бұрын

Me!!😅 I Googled it, but came back!

Toughness and hardness are very much two different things. Hardness is a resistance to penetration, toughness is a resistance to being pulled apart. Most things are either hard or tough, not both. Indentation testing uses Rockwell scales, by the way.

I refuse to get my mind out of the gutter as it’s happiest when it’s there.

@alden1132

Ай бұрын

Usually, the better the cleavage, that harder things are... 😁

@garybarnes4169

Ай бұрын

Some people have their minds in the gutter. Some of us have to use a periscope. 🙈

"Jesus Christ, Marie! They're Minerals!" - Hank Schrader

@BanditLeader

Ай бұрын

the most misquoted thing in the entire series. he actually says "No, they're minerals. Jesus, Marie"

@VeroTesta

Ай бұрын

@@BanditLeader oh, I know, but like "Luke, I am your father" the meme form may differ from a verbatim quotation.

@Les537

Ай бұрын

you you you you you you killed uncle hank!

@nHans

Ай бұрын

Elementary, my dear Watson.

@VeroTesta

Ай бұрын

@@Les537 ;_; such a tragedy, seriously. I luv W.W. Jr.

I never thought I'd be so captivated by rocks! Thanks for the eye-opening lesson.

As a self taught almost jeweler who works with gems on a regular basis I really enjoyed this video. Both scratch and indentation resistance are important for the work I do. So it's really fun to see a Scishow video on this topic. Plus, I've loved all things rocks since I was a little girl. Thanks Scishow! 😊

It looks like you are holding a topaz specimen from topaz mountain in Utah. That's one of my favorite places to find crystals. I have buckets full of topaz from there, and I always give handfuls to people who want them. But my favorite crystals from that location are all of the red beryls that I've found. I don't give those away as readily, since they are one of the most rare gems in the world.

My eye only twitched a little bit each time he said "tough". Aside from that, great video!!

I had a friend in middle school who said she would build a deep sea submarine out of a huge diamond because it could stand up to the pressure because it was so high on the mohs scale and I always thought that wasn’t quite right but could never figure out how to explain my thinking, thanks for answering a question I’ve had about the hardness of minerals for over ten years!

I love this series. The back ground and set, the hosts; the cool rocks, the interesting info.. keep it up. 👍

I'm here to listen to SciShow talk about "perfect cleavage" for six minutes.

@status101-danielho6

Ай бұрын

I greatly appreciate perfect cleavage, but all I'm seeing is a video about rocks. :)

The fact that we are all here watching this video, has a lot to do with the fact that rocks tend to cleave. Because flint knapping was a big factor in our ancestors surviving and spreading over the world.

Decades ago (well before internet was a thing), I heard that while diamonds are the hardest, they are also brittle - they can shatter if dropped (?). Not sure of the validity of it, but it makes sense to me - if there is no "give", then it will fail. Hard does not equate with strong, nor vice versa.

@charlizard_762

Ай бұрын

I work with diamonds daily, using whole diamonds as a cutting tool. They can shatter if you drop them and chip just by cleaning them off with a Kleenex so that’s very true

@aidankeller1717

Ай бұрын

'Tis true.

@emberrose82

Ай бұрын

They have a grain like wood and if not right absolutely can shatter easily. I use to do appraisals for mainly diamond jewelry and had to become diamond certified. It was fascinating

@fwiffo

Ай бұрын

Diamonds can also burn (with some effort). Sapphire is the superior gemstone.

@SpringStarFangirl

Ай бұрын

This is why moissanite is so cool- it's harder than corundum at 9.25-9.5, but has far fewer cleavage planes and is thus far harder to shatter than even diamond.

The thumbnail is hilarious. Also Stefan has gotten really good at presenting these videos.

Is that a vintage early 80’s faux wood Rat Shack alarm clock radio with 9v battery backup?! If so let’s stop to appreciate the real gem in the room here.. 😉

15 seconds into the video, Stefan says _"The higher the [Mohs'] number, the _*_harder_*_ the stone. So a stone that’s an eight on the scale, like topaz, must be pretty _*_tough,_*_ right?" And I'm immediately like "Dude, _*_hardness_*_ and _*_toughness_*_ are __*_two different things!_* Did you honestly misspeak, or is this a deliberate-but amateurish-attempt to confuse your viewers?" Sigh. Not being a native English speaker often helps me understand science and technology better than native English speakers. The latter mistakenly assume that because "hard" and "tough" mean roughly the same thing in everyday English, the same meanings should carry over to technical usage as well.

@jackbucher2049

Ай бұрын

you seem genuinely insufferable

SciShow's videos are always awesome, but this one just rocks. 🗿

I'm always down for more geology SciShow content!! It's my favorite subject - would love to see even more!

I miss Stefan being on Tangents. He is completely unhinged

Spinel is the most underrated gemstone.

Awesome! Audio is all right again 😁

@FuchsDanin

Ай бұрын

It's better, but it's still clipped pretty badly. They just turned it down a little more.

I can't wait until I get a box, even though I should be buying food instead... I have been trying to get one since December. I even stayed up all night long this month. To no avail, and golly was I tired - not like it was like when I stayed up all night as a kid! I REALLY hope the "notify me when available" is some kind of indicator for how many they have for sale, because this is frustration to the extreme. I am very soon going to not want a box, mainly because I feel like I am missing out on my favorites!!

Pretty sure that this video will explain it much better than I can, but I'm commenting before watching to see how wrong (or right! 😅) I am Soo... for almost a decade I worked in jewelry, where the Mohs Scale is often used. If memory serves me correctly, "Hardness" is only used when you're describing how hard it is to scratch the surface of a stone. Considering how much we all use our hands and how expensive jewelry can be, the Mohs Scale is important info to have when you've got pricey precious stones encircling your phalanges. However, if you wanna find out how difficult it is to straight up BREAK said stone for whatever reason, then you need to look up how "Tough" the stone is (Fun fact: Opals are super easy to break. It'd be much safer having an opal used in a pendant instead of a ring.) At least, that's what I was taught. If I'm wrong, please feel free to correct me in the comments about which part I messed up. (Bonus points awarded if you manage to do so in a nice way 😊) Hope everyone had or is having a great day or night :)

I was hoping you'd mention the hardest gem to break. Which is jade, surprisingly.

@fadjrinfaisal8662

Ай бұрын

hardest? with 6.5 - 7 mohs scale?

@napdogs

Ай бұрын

@@fadjrinfaisal8662 Somehow you missed the entire point of the video and my comment. I said hardest to BREAK not hardest to scratch.

@alexandraford4739

Ай бұрын

@@fadjrinfaisal8662 Behold, the guy who did not the watch the video.

@fadjrinfaisal8662

Ай бұрын

@@napdogs mohs scale is not about scratch, is about how hard it to break. 1-3 mean is, the minerals is not hard to break. You just can break a 1 mohs scale minerals with finger not even fingernail. And hardes gem to break is a 10 mohs scale minerals for sure

@fadjrinfaisal8662

Ай бұрын

@@alexandraford4739 the man in the video does not even talk abt rocks, it's minerals and more focused on topaz

Ironwood is, to the best of my knowledge, the wood with the highest Mohs rating and would be worthy of a SciShow.

After all so many videos people in the arts should have learn already, why science and engineering has particular words for particular qualities and discourages use of synonyms. Hard is hard, tough is tough, strong is strong - simple as that.

@2l84t

Ай бұрын

Context tends to help.

@nHans

Ай бұрын

Well, to be honest, it's the fault of the mathematicians and scientists. For whatever reason-laziness, lack of imagination-instead of coining new words for new concepts, they just took everyday words from English-which already had certain meanings in everyday usage-and redefined them with a different meaning for use as technical terms. This is why there's so much confusion between technical v. everyday usages of English words. Some examples from math, where technical terms have a very different meaning from everyday English: _real, imaginary, complex, rational, irrational, transcendental, matrix, magma, group, ring, field, map, telephone number._ 🙄 Bad names in physics: _zero gravity, color charge, strong force, weak force, dark matter, dark energy, mass, matter, energy, work, power, relativity, red shift, blue shift._ Also, _sun_ ☀ and _star_ ⭐ mean the same thing? 🤔 Biologists are particularly bad. To them, cucumbers, eggplants, and okra are fruits, while apples, pears, and strawberries are not. Peanuts are not nuts. Spiders are not insects anymore-but they used to be, before biologists confused the heck out of everybody. Law and medicine too imported lots of Latin words into their technical vocabulary. Luckily for them, Latin today is a dead language, so there's relatively less confusion between their technical words and everyday English.

@Napoleonic_S

Ай бұрын

@nHans 😂😅 WTF, do us a favor and just try to create new terms for the items that you mentioned, I'm not that picky, try 5 new terms from the ones that you mentioned there across all field of study and even math.

@Baymax872

Ай бұрын

⁠​⁠@@nHansbiologist here: you’re point still stands but all the “fruits” you listed are fruits! Strawberries are not berries though….neither are blackberries or raspberries. My favorite: not only are tomatoes biologically fruit, they are berries!! So are gourds! And cucumbers! Blueberries are one of the few properly labeled fruits. They are blue and they are berries. If you think about, other than taste, size, and color there isn’t much difference between a blueberry and a tomato. Like in terms of biological structures they are extremely similar, that’s why they’re both berries. Blackberries shares pretty much nothing in common with blueberries so they can’t be in the same category. I love playing with semantics!

I have a brilliant crimson jasper ring and as I was listening I got afraid I would scratch it easily. I looked it up on the scale and thankfully, I don't have to be too afraid of scratching it by bumping my hand into everything possible 😅

Much better thanks!

I love geology! I actually learned most of this from the anime Land of the Lustrous! But it's nicely summed up here!

Love the new sets!

I picture Hank looking at the Rock Box saying, "They're minerals"

More geology videos please! we love to see representation for our underdog science.

Excellent overview on rock hardness! I collect minerals for their uniqueness! Alain Faber

My postcard arrived today (in Australia). Thanks for posting it. I agree there are many science channels. Some of them, like ScShow, are good, and some of them are not so good.

now just need to make the next box Aventurine, would go well with Topaz

My rock box subscription makes my nerdy heart so happy

This video rocks 🤘🤘🤘

Red rover red rover, an audio do over.

It still sounds weird but still a massive improvement

5:55 that's enough dirty jokes

I like the new set!

Stefan definitely plays Honkai Star Rail.

Are we just ignoring that thumbnail😂

Nice

Audio correction is much appreciated!

@vzxvzvcxasd7109

Ай бұрын

It's April's fools

@FeeshUnofficial

Ай бұрын

​@@vzxvzvcxasd7109it's april 4th...

That rocks!

but the gutter is a great place to find rocks that have washed down off the mountains.... I think I will stay in the gutter thank you :D

Credit to whoever came up with the thumbnail

Rock and stone!

deja vu?

@iambiggus

Ай бұрын

Audio redux.

@Komandor98

Ай бұрын

yea im getting the same vibes

@dinomaster420

Ай бұрын

@@VeroTesta fixed the audio

@Sabeteur83

Ай бұрын

I know i watched this yesterday lol

@VeroTesta

Ай бұрын

@@dinomaster420 thanks!

This video almost became a drinking game lol

The title card said "perfect cleavage," so I immediately clicked on it... Definitely wasn't expecting rocks... 😁😂

Yeah, yeah, rocks, cool. What are you doing on Thechnology Connections house?

I saw this video out of the corner of my eye and thought it was something else.

I'm so confused. Reupload? Perhaps corrections? 🤔

@nebulan

Ай бұрын

Audio fix yeah

@whenthingsfly4283

Ай бұрын

​@@nebulantbh I didn't notice a difference, but thanks for letting us know. Would've been a head scratcher otherwise 😹

@isabelab6851

Ай бұрын

Had the same question

@korg47237

Ай бұрын

@@whenthingsfly4283didn't notice a difference? the original sounded like nails on a chalkboard

@vzxvzvcxasd7109

Ай бұрын

It's probably April fools

My favorite presenter

The rock's cleavage in the thumbnail looks different than it does on WWE

Cleavage? Geology? I feel a Randy Marsh Episode coming on..

Yall knew what you were doing with that thumbnail

"Topaz has perfect cleavage." Plot twist: Topaz is the work-name of a certain someone Stefan met during a crazy weekend in Vegas.

Guys, I would LOVE a longer video discussing more of the material properties of pretty rocks. Silly cleavage jokes aside, this is really fascinating!!

What's the difference between indentation hardness and compressive stress?

Rock is hard, metal is heavy \m/

Yesterday’s upload was an April fools joke, to all who are confused.

So spicey!

You know you're a nerd when you knew the context and definition of cleavage in relation to minerals wayyy before you heard of the other kind 😅

Huh... Never thought I would watch a Sci-Show video about being rock hard and perfect cleavage, but here we are.

@emyra_3293

Ай бұрын

LOL

No one: Topaz : ( Y )

the THUMBNAIL😭😭😭

Get the mind out of the gutter and then proceeds tosay Harder, durable, tap,touch,squeeze,etc

*Juice Robinson.* _IYKYK_ 😅

@Delente.

Ай бұрын

rock hard!

@Aragorn7884

Ай бұрын

@@Delente. 🤘

I too make that face when seeing perfect clevage

It can be so hard to be the hardest rock that is really hard to break.

Wait, so Sapphire and Ruby were never breaking the rules. They're both Corundum.... You know what I see why they went with Garnet now.

Is this a reupload? Did you get the strike hammer?

Well, the thumbnail is accurate in A way.... 🤨

"Get your mind out of the gutter" -> something few geologists do.

Geologist must have the best pick up lines.....

Why so few reference images?

Cleavages are also my weak point!

Steven Universe fans would love this video

Rocks are soft some softer than others. There are no hard rocks... Unless you are trapped in an 80's-90's themed restaurant. Metals are mostly soft because they are really just dense rocks. Now alloys that's where we start seeing some hard dense rocks.

I know of a gemstone with 10 Hardness, but no Cleavage: Koseki Bijou 🗿🗿🗿

Just dropping in to say you should have put a yellow demonetized logo "censoring" the rock But I liked it anyway lol

I would agree with you to get the head out of the gutter and that this being geology terms. But then ... they are a type of scientists and those are absolutely infamous for having absolutely poor poor naming habits :'D So chances are, their minds WERE in the gutter when they chose that terminology for the official way to describe this.

emerald is a type of beryl

Isn't indentation hardness generally called Brinell hardness?

When I noticed the original upload got pulled, I assumed it was because of all the "hard" and "cleavage" puns. Boy, was I disappointed.

rockshow

I was expecting décolletage.

wow , you figured out how to sell people boxes of rocks.

Is this the nilered/ nileblue guy?

Holy crap the magic school bus reference!

So, this has nothing to do with Cleveland? Dang.