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I made this thread... FOR SCIENCE!

Lost SalientLost Salient blink twiceif you'd like me to mercy kill youRegistered User regular
Guys, there are a lot of really amazing things in the world! And there are also a lot of people out there exploring those amazing things and learning about them! Sometimes when they learn something new, they talk about it, and share it with laypeople so that they can also be excited and amazed.

I fucking love science.

I bet you do, too.

HEY KIDS, YOU LIKE DINOSAURS?

Well PALEONTOLOGY is a science, for sure! Paleontology is the study of goddamn extinct animals and shit using their fossils. If you're studying the dodo, you're probably not a paleontologist, though, because it only counts if your fossils are pre-Holocene. That means before people. Among other things. Look, if you're a people, paleontologists don't give a fuck about you.

They're too busy discovering the biggest dinosaur ever. His name is Dreadnaughtus and, given that he weighed more than seven T-Rexes, this guy would ruin your day if you pissed him off.

MNFYc81.jpg

Paleo means "old as balls" in Greek, and if you're not into old as balls animals, you're not a paleontologist. You might be a paleobotanist, like Ellie Sattler, or a paleoecologist, or a paleoclimatologist even! You can be paleo-a lot of stuff.


"Dinosaurs are boring, they move too quickly. I want a science that talks about time on an even larger scale."

Like.. the GEOLOGIC time scale? We can work with that. Geology is the study of the Earth, its components, and what makes them change. Also, how they change. Geologists can be found doing all sorts of really amazing stuff, so if you think geology is dumb then I counter with NO YOU'RE DUMB. Look at all these sciences that fall under the mantle (IT'S A PUN) of geology:

Volcanology is the study of volcanoes, which are portals to hell, probably, or kind of like giant zits on the Earth's face. Volcanoes form where plates of the earth's crust are either being pulled apart (divergent tectonic plates) or pushed together (convergent tectonic plates). They can also form at weak spots in the earth's crust, or when diapirs of magma push up from under the crust. You can think of a diapir as one liquidy-smushy-moving material is able to force its way through a brittle-y, breaky other material. Protip: magma is liquid rock found underground; once it comes up and out it stops being magma and starts being lava.

But wait! The definition above is a bit misleading because you can also study solid "earth" that isn't actually on Earth. Like, say, the geology of other bodies in space. You into that? You should be, because it's rad as fuck. The people who realized this early on and studied it extensively are called exogeologists, or planetary geologists, or just Really Cool Dudes.

There's also Mineralogy, which is the study of the crystal structure, makeup, and general properties (like refraction) of minerals. If you like maths and things that are beautiful and also chemistry and also SECRET SURPRISES, mineralogy is a thing to consider studying. People think it's boring but people are wrong.

fhoap5J.jpg

That is a picture of a mineral called chalcanthite, which forms in dry climates on late-oxidization-stage copper deposits. SUPER GORGEOUS, right? here's the SECRET SURPRISE: It's water soluble, and if you lick it, it MIGHT KILL YOU. That's right, it's poisonous!

z3AVIC7l.jpg

This silky hair stuff is a beautiful mineral, too! It's called tremolite, and in its silky fibrous form, it is recognized as a kind of asbestos. Just a reminder: asbestos causes oodles of cancer and a chronic inflammatory condition called asbestosis, because you get it from, y'know, asbestos.

Okay I guess I gotta stop talking about rocks. There are other natural sciences, though. Wicked cool sciences like BIOLOGY, which is the study of living things! Just like the other types we've discussed, there are a million subdisciplines in biology! Molecular biology, ecology, neuroscience...

Then there's CHEMISTRY, PHYSICS, ASTRONOMY, SOCIOLOGY... BIOMEDICAL ENGINEERING...

Look, okay there's a lot of scientific ground to cover and that's not really why I wanted to make this thread. I wanted to make this because I bet there are other people out there who do a lot of science reading in their day-to-day, and often see things and think, "THAT'S AMAZING!" Well, I want you to share with me your AMAZING SCIENCE THINGS that you find! We can talk about how totally incredible all the stuff around us is. (It's pretty incredible.)

RUVCwyu.jpg
"Sandra has a good solid anti-murderer vibe. My skin felt very secure and sufficiently attached to my body when I met her. Also my organs." HAIL SATAN
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    BroloBrolo Broseidon Lord of the BroceanRegistered User regular
    edited September 2014
    This is a good thread.

    kCvyHC4.jpg

    I wish there was a proper print version of this, there's one high-resolution one but it's of pretty low quality once you actually zoom in.

    Brolo on
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    Lost SalientLost Salient blink twice if you'd like me to mercy kill youRegistered User regular
    edited September 2014
    A Portrait of the Portuguese Man-of-War

    qXKbbUsl.jpg

    Photographer Aaron Ansarov has been taking pictures of Portuguese Man-of-Wars for a while now, and they're gorgeous.
    The animal is actually part of a group related to jellyfish called siphonophores. What appears to be one organism in this group actually is a colony. Instead of having specialized tissues that form organs, as in other animals, siphonophores are collections of genetically identical individuals specialized for different tasks.

    Some form tentacles, while others form feeding bodies, floats, or reproductive structures.

    These are super fascinating animals, and the photographs are out of this world beautiful. There are tons more if you click the link, and some of them moooooove.

    8XZJTmRl.jpg


    Lost Salient on
    RUVCwyu.jpg
    "Sandra has a good solid anti-murderer vibe. My skin felt very secure and sufficiently attached to my body when I met her. Also my organs." HAIL SATAN
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    LabelLabel Registered User regular
    Science is fucking awesome.

    jellyfish are fucking terrifying.

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    JayKaosJayKaos Registered User regular
    Brolo wrote: »
    This is a good thread.

    kCvyHC4.jpg

    I wish there was a proper print version of this, there's one high-resolution one but it's of pretty low quality once you actually zoom in.

    Somebody has to have made an actual calendar out of that, right?

    Steam | SW-0844-0908-6004 and my Switch code
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    Lost SalientLost Salient blink twice if you'd like me to mercy kill youRegistered User regular
    The limited edition has a pin-up NdGT insert

    RUVCwyu.jpg
    "Sandra has a good solid anti-murderer vibe. My skin felt very secure and sufficiently attached to my body when I met her. Also my organs." HAIL SATAN
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    YukiraYukira Registered User regular
    The limited edition has a pin-up NdGT insert

    What.

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    tynictynic PICNIC BADASS Registered User, ClubPA regular
    Science??

    sounds like witch-talk to me.

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    Theodore FlooseveltTheodore Floosevelt proud parent of eight beautiful girls and shalmelo dorne (which is currently being ruled by a woman (awesome role model for my daughters)) #dornedadRegistered User regular
    Yukira wrote: »
    The limited edition has a pin-up NdGT insert

    What.

    and it leaves nothing to the ship of the imagination

    f2ojmwh3geue.png
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    UsagiUsagi Nah Registered User regular
    tynic wrote: »
    Science??

    sounds like witch-talk to me.

    I'm in

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    Lost SalientLost Salient blink twice if you'd like me to mercy kill youRegistered User regular
    Yukira wrote: »
    The limited edition has a pin-up NdGT insert

    What.

    and it leaves nothing to the ship of the imagination

    This is all I want in the world.

    Well, this and a nice MLT.

    RUVCwyu.jpg
    "Sandra has a good solid anti-murderer vibe. My skin felt very secure and sufficiently attached to my body when I met her. Also my organs." HAIL SATAN
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    LuvTheMonkeyLuvTheMonkey High Sierra Serenade Registered User regular
    edited September 2014
    Why yes, Sandra, I am into old animal balls.


    What of it?

    LuvTheMonkey on
    Molten variables hiss and roar. On my mind-forge, I hammer them into the greatsword Epistemology. Many are my foes this night.
    STEAM | GW2: Thalys
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    DarmakDarmak RAGE vympyvvhyc vyctyvyRegistered User regular
    Why yes, Sandra, I am into old animal balls.


    What of it?

    Paleoballogist

    JtgVX0H.png
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    Grey GhostGrey Ghost Registered User regular
    Good thing you didn't mention any of those joke sciences, like those clowns over in anthropology

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    LuvTheMonkeyLuvTheMonkey High Sierra Serenade Registered User regular
    Darmak wrote: »
    Why yes, Sandra, I am into old animal balls.


    What of it?

    Paleoballogist

    Whale ballologist

    8WZnS9m.png

    Molten variables hiss and roar. On my mind-forge, I hammer them into the greatsword Epistemology. Many are my foes this night.
    STEAM | GW2: Thalys
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    #pipe#pipe Cocky Stride, Musky odours Pope of Chili TownRegistered User regular
    Did you fools hear they finally figured out and directly observed what makes the Sailing Stones sail?

    https://www.youtube.com/watch?v=89-AFHieDpM

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    tynictynic PICNIC BADASS Registered User, ClubPA regular
    Grey Ghost wrote: »
    Good thing you didn't mention any of those joke sciences, like those clowns over in anthropology

    my sister is an anthropologist, and I approve of this joke.

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    Grey GhostGrey Ghost Registered User regular
    tynic wrote: »
    Grey Ghost wrote: »
    Good thing you didn't mention any of those joke sciences, like those clowns over in anthropology

    my sister is an anthropologist, and I approve of this joke.

    A single tear fell on my anthro degree from the University of South Carolina as I typed this

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    UsagiUsagi Nah Registered User regular
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

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    DarmakDarmak RAGE vympyvvhyc vyctyvyRegistered User regular
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    I'd be interested in reading about it, even though I have no idea what you're talking about.

    JtgVX0H.png
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    MetalbourneMetalbourne Inside a cluster b personalityRegistered User regular
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    WHAT

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    LuvTheMonkeyLuvTheMonkey High Sierra Serenade Registered User regular
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    Navier-Stokes whaaaaat
    Thus ends the extent of my fluid dynamics knowledge

    Molten variables hiss and roar. On my mind-forge, I hammer them into the greatsword Epistemology. Many are my foes this night.
    STEAM | GW2: Thalys
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    Lost SalientLost Salient blink twice if you'd like me to mercy kill youRegistered User regular
    I don't know anything about cavitation and fluid dynamics!

    And I bet I will find it pretty interesting!

    I nearly waxed rhapsodic about rocks for another page worth of OP, it's not that much of a stretch.

    RUVCwyu.jpg
    "Sandra has a good solid anti-murderer vibe. My skin felt very secure and sufficiently attached to my body when I met her. Also my organs." HAIL SATAN
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    UsagiUsagi Nah Registered User regular
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    WHAT

    Listen, I start talking about viscosity and vortices and vapor pressure and then their eyes start to wander and they play with their phones

    I should really just show people the video of the pistol shrimp and call it good

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    MachwingMachwing It looks like a harmless old computer, doesn't it? Left in this cave to rot ... or to flower!Registered User regular
    Cavitation is easy to avoid; just brush your propellers twice a day

    l3icwZV.png
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    MarathonMarathon Registered User regular
    Dreadnoughtus is one of the best dinosaur names I've ever heard

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    KakodaimonosKakodaimonos Code fondler Helping the 1% get richerRegistered User regular
    But the most interesting part of fluid dynamics is talking about the numerical solvers for nonlinear equations. Reimann solvers, discretization. Finite volume. Ill conditioned matrices.

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    ZibblsnrtZibblsnrt Registered User regular
    Usagi wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    WHAT

    Listen, I start talking about viscosity and vortices and vapor pressure and then their eyes start to wander and they play with their phones

    I should really just show people the video of the pistol shrimp and call it good

    "Now picture an army of these attacking this propeller..."

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    fightinfilipinofightinfilipino Angry as Hell #BLMRegistered User regular
    Usagi wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    WHAT

    Listen, I start talking about viscosity and vortices and vapor pressure and then their eyes start to wander and they play with their phones

    I should really just show people the video of the pistol shrimp and call it good

    i mean, you can't really go wrong with Mantis Shrimp, and you definitely understand the basics of cavitation afterwards

    https://www.youtube.com/watch?v=DtNAqK_V-lg

    ffNewSig.png
    steam | Dokkan: 868846562
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    VeldrinVeldrin Sham bam bamina Registered User regular
    CAN YOUR SCIENCE EXPLAIN WHY IT RAINS?

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    fightinfilipinofightinfilipino Angry as Hell #BLMRegistered User regular
    Veldrin wrote: »
    CAN YOUR SCIENCE EXPLAIN WHY IT RAINS?

    cause I'M MAKIN IT RAIN

    ffNewSig.png
    steam | Dokkan: 868846562
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    #pipe#pipe Cocky Stride, Musky odours Pope of Chili TownRegistered User regular
    Veldrin wrote: »
    CAN YOUR SCIENCE EXPLAIN WHY IT RAINS?

    that's jesus crying because of all the sins

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    #pipe#pipe Cocky Stride, Musky odours Pope of Chili TownRegistered User regular
    s'why it rains so much in heathen places like Seattle and why it's so dry in Israel NO WAIT I'VE MADE A MISTAKE

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    PlatyPlaty Registered User regular
    I think I'm gonna order a pizza

    But not with shrimp

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    MetalbourneMetalbourne Inside a cluster b personalityRegistered User regular
    Darmak wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    I'd be interested in reading about it, even though I have no idea what you're talking about.

    Cavitation is some awesome stuff.

    You see, the faster a fluid moves, the lower the pressure becomes. You can actually get a fluid moving fast enough that it fucking vaporizes!

    It's not like it disappears forever, though, so when it slows down, like from hitting a propeller, that little vaporized bubble will collapse. BAM! LIKE AN EXPLOSION but backwards! Here's the cool part: when that bubble collapses, it creates a shockwave of tens of thousands of PSI which can take a chunk of metal out of the propeller with it.

  • Options
    Bendery It Like BeckhamBendery It Like Beckham Hopeless Registered User regular
    edited September 2014
    Darmak wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    I'd be interested in reading about it, even though I have no idea what you're talking about.

    Cavitation is some awesome stuff.

    You see, the faster a fluid moves, the lower the pressure becomes. You can actually get a fluid moving fast enough that it fucking vaporizes!

    It's not like it disappears forever, though, so when it slows down, like from hitting a propeller, that little vaporized bubble will collapse. BAM! LIKE AN EXPLOSION but backwards! Here's the cool part: when that bubble collapses, it creates a shockwave of tens of thousands of PSI which can take a chunk of metal out of the propeller with it.

    I think I understand this concept, but can you explain a likely scenario in which this would happen? Can it happen when any vapor hits a a propeller or only when vapor formed due to cavitation hits a propeller?

    wooo
    https://www.youtube.com/watch?v=oRYYP4F8LTU

    informative, but boring

    Bendery It Like Beckham on
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    PeasPeas Registered User regular
    edited September 2014
    Usagi wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    WHAT

    Listen, I start talking about viscosity and vortices and vapor pressure and then their eyes start to wander and they play with their phones

    I should really just show people the video of the pistol shrimp and call it good

    i mean, you can't really go wrong with Mantis Shrimp, and you definitely understand the basics of cavitation afterwards

    https://www.youtube.com/watch?v=DtNAqK_V-lg

    http://www.gizmag.com/mantis-shrimp-super-tough-composite-materials-uc/31768/

    Science

    Peas on
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    MetalbourneMetalbourne Inside a cluster b personalityRegistered User regular
    Darmak wrote: »
    Usagi wrote: »
    I got to explain cavitation to one of my coworkers this morning because we had a repair job come in with propellers that are pitted all to shit

    So maybe if I'm feeling ambitious later I'll write something up but it's hard to make fluid dynamics anything other than booooooring

    I'd be interested in reading about it, even though I have no idea what you're talking about.

    Cavitation is some awesome stuff.

    You see, the faster a fluid moves, the lower the pressure becomes. You can actually get a fluid moving fast enough that it fucking vaporizes!

    It's not like it disappears forever, though, so when it slows down, like from hitting a propeller, that little vaporized bubble will collapse. BAM! LIKE AN EXPLOSION but backwards! Here's the cool part: when that bubble collapses, it creates a shockwave of tens of thousands of PSI which can take a chunk of metal out of the propeller with it.

    I think I understand this concept, but can you explain a likely scenario in which this would happen? Can it happen when any vapor hits a a propeller or only when vapor formed due to cavitation hits a propeller?

    wooo
    https://www.youtube.com/watch?v=oRYYP4F8LTU

    informative, but boring

    Well, see, pumps have this thing called "net positive suction head required(NPSHr)" based on the geometry of the impeller. It also has "net positive suction head available (NPSHa)"
    Now, pressure is measured in feet, as in how high a pump can push a column of water or whatever it's pumping. So at sea level, where a pump inlet is exactly at the level of the fluid it's pumping, you have roughly 34 feet of NPSHa. So if your pump requires 25 feet of NPSHr, the closer that pump comes to 9 feet above the surface of the liquid the more likely it is to cavitate. This happens often in scenarios where a fluid level changes a lot and the pump for whatever reason cannot be placed at the bottom of the fluid reservoir. Like, say, a pump placed at the edge of a pond.

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    Blake TBlake T Do you have enemies then? Good. That means you’ve stood up for something, sometime in your life.Registered User regular
    I spent all of last week arguing about stiffness and mass and harmonic resonance.

    Then we decided, fuck it. Let's make it super stiff.

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    Grey GhostGrey Ghost Registered User regular
    I got your net positive suction right here

This discussion has been closed.