How geologists collect lava

https://lemmy.world/post/4157871

How geologists collect lava - Lemmy.world

Is that an OSHA approved hand over the face to keep from breathing the poisonous gas?

I’m kind of surprised it’s not hot enough to boil off all the water in that little bucket pretty quickly, bit obviously it isn’t.

I really have no idea but my guess was the heat.

He might just be shielding his face from the heat. That said, I saw a little plant that almost survived the lava flow, and it was much closer than he was, so idk.

Normally when I see geologists standing around lava they have masks on, so I’d assume he has one under whatever he’s got on his face. Either that or maybe he was getting a couple quick scoops and wasn’t going to be standing around long enough for a mask to make a huge difference.

I’m no lavatorial expert, but I’d guess the thermal conductivity of lava is relatively low. The high temp and high mass will keep it warm for a while, but water has a pretty high conductivity and capacity on its own. The agitation is distributing the heat too, well beyond the regular convection rate.

I would guess.

I’m not thinking that “lavatorial” is the correct word.

That conjures “lavatory”, which is something different.

For the science, yeah, more than enough water to cool the lava.

That’s just my experience. If someone does the math, I’ll love them.

Do what math? I honestly don’t know what you guy’s actually expect it to look like, so I don’t know where to start explaining.

Seriously? The lava in water math.

It’s high school stuff if you bother to look up the specific heat and make some reasonable guesses.

It’s masters degree in thermal fluids engineering math

I wasn’t insulting you intentionally.

You certainly can do the math. I’m too lazy to do it.

Do you want to?

How interesting.

I have a PhD.

I can’t say that what you claim your degree is in is total word salad because I had a textbook “advanced engineering mathematics” (the Greenberg one) in undergrad.

It’s just “engineering math” is weird.

Also, you are not part of this thread until this post.

No it’s not. Google specific heat of lava. Shit’s been done already.
Mate, I model thermal processes for a living. The question is: What is the question? What to calculate? What expectations are there to (dis)proof?

Bruh. Someone else on this thread has already clarified to you the easy and what I was expecting question: what happens to the water and lava in the water bucket.

You already answered that question in this thread.

“Bruh”, everyone knows what happens, we are looking at it in the video. Lava gets cold, water hot. Obviously. There is not much to go on about.

Bruh. Someone else on this thread has already clarified to you the easy and what I was expecting question: what happens to the water and lava in the water bucket.

You already answered that question in this thread.

Heat capacity of lava per degree Celsius per unit of mass

Multiplied by temperature differential vs ambient, multiplied by mass = total extra heat energy

Then you calculate the sum of heat capacity multiplied by mass for lava and for water, and calculate from that how many degrees above ambient the two masses will land at when combined as the extra energy above is divided over both (assuming water starts at ambient temp)

Okay. Then they add more and it will boil quickly. I guess the question boiles (huehue) down to how much water you can turn into stream per amount of lava or the inverse, how much lava you can cool down per amount of water.

The phase change from liquid water to stream will, by the way, not just contribute significantly but be by far the majority of energy needed. Simply heating water up, ignoring the phase change and changes of the heat capacity, with the same energy as it takes to go from liquid to gas (2257 kJ/kg) would result in a temperature rise of… dT = 2257 kJ/kg / 4.2 kJ/(kg*K) = 537 K

Assuming enough water that most of it doesn’t boil, then my math would still check out, but yeah, any substantial amount of boiling forces you do do the math in multiple steps to handle that
If you replace the lava* with shit, the phrase still makes sense and is accurate
Was gunna say, looks like he’s looting the lava more than doing a carefully controlled scientific procedure.
Could also be oil instead of water. I know they use oil to cool off blacksmithing stuff.
OSHA completely missed the large ripped hole in the suit by his thigh…
That was from the last guy who did this job and died under mysterious circumstances. Nothing to worry about.
What surprises me is no way to carry the bucket away afterward; You would have to put your hand over the bucket. Gloved or not, it does not seem very safe.
If it really is just getting the lava down to boiling water temperature, or even a bit higher, that thin metal handle will dissipate that heat pretty quickly. A glove should be fine.
Everytime I see lava, I want to eat it…
Mmmmm… Forbidden snack.
Sounds like a good idea for a community.
Is there a name for the phenomenon where something looks tasty despite not being supposed to be eaten (like soap, I always want to bite soap)
Forbidden Snacks

Forbidden Snacks are a slang term given to household objects that appear as though they may be edible treats but are hazardous to consume. The term grew alongside the rise of Eating Tide PODS memes to include other foods that look like they might be snacks.

Know Your Meme
I’ve definitely seen similar mechanics with cheese in the toaster
You can only try it once in your life!
Is it even lava after it cools in the bucket of water? Chemically, yes (or maybe? Wouldn’t the water change it just a bit?), but definition wise does lava not imply that it is still molten?
Lava sampling: Why do we do it? | U.S. Geological Survey

Hot lava samples provide important information about what's going on in a volcano's magma chambers. We know from laboratory experiments that the more magnesium there is in magma, the hotter it is. Chemical analysis, therefore, provides the means not only to determine the crystallization history of lava but also to establish the temperature at which it was erupted. For example, Kilauea's 1997 lavas are chemically different from lavas erupted from 1985 to 1997. Chemical analyses show that magma was supplied by two distinct magma bodies. Learn more: USGS Volcano Hazards Program

That’s so weird. Why doesn’t he just fill the bucket with lava? That way he can place a lava source block wherever he wants! Maybe set fire to his friends creations in the process.
Dude just want obsidian quick

THEY SENT A HUMAN TO A FIERY DEATH MOUNTAIN??? 😱

(That was so nerve-wrecking to watch. Somebody better built a robot to automate that, that shit is terrifying. I hope the person gets paid well.)

Feels like there is a safer way to do this
just grabbing it up like its a casserole

The lining of their pocket threw me off for a moment…

Like Link when he casually shoves the thing THAT IS ON FIRE they are holding into their pants.

I like that it has its own aluminum foil seal to keep it fresh.
Forbidden pudding.
I want to chew on it like it’s day old banana pudding skin
Oh man, he’s going to be so disspaointed when he gets home and it’s all just rocks. It’s like the time I bottled a piece of a cloud in Costa Rica and opened it up to just find a slightly damp bottle.
Ive reported you to the costa rican authorities for theft of natural beauty you fucking scum
That’s why you’re supposed to get your hair braided into corn rows and a Puka shell necklace to remember your trip. Those last forever.
Those two things really compliment a set of braces and acne.
I remember when James May did something like this with a modified Toyota Hilux Diesel
Gosh he could smelt at least 100 items with that.
Lava Bucket

A lava bucket is a bucket filled with lava. To fill an empty bucket with lava, use it on a lava source block or lava in a cauldron. The block is consumed in the process. Flowing lava does not fill a bucket. If there is a lava source above the pointed dripstone stalactite, there is a 15⁄256 (~5.9%) chance for it to completely fill an empty cauldron within 10 blocks under the tip with lava after a random tick. This lava can then be scooped with a bucket, making it a renewable resource. A lava buck

Minecraft Wiki
Kinda looks like candy. Some sort of saltwater taffy. When I was a kid, there was a machine that stretched it, and it kinda looked like the lava chunks :)
dont get angry toothpaste on your boots new balances.
Extra spicy marinara.
I would pay to be allowed to scoop some lava into a bucket. It looks so weird and I really want to poke it. How many people get to say they willingly got to handle lava!

I hiked out to the lava flows in Hawaii when you were still allowed to. It’s pretty cool, but also super scary.

You have to hike for miles over fresh lava flow which creates one of the most difficult terrains imaginable. Imagine rippling hills made of cheese graters and razorblades. And the lava heats the air, so it’s like 130°f. And you have to touch the ground constantly, if it’s too hot to touch or your shoes are melting, or if you hear any cracking, it means you’re likely in top of a lava tube that can crumble away from your weight dropping you into lava.

You have to sit through a 45 minute long safety video before they let you out there, which also explains that due to the heat and the drafts, helicopters can’t get out there, so if you get into trouble, even just succumbing to heat stroke it twist an ankle bad enough that you can’t walk, no one can help you. You need to bring a lot of water.

Lol why were people allowed out there at all