this post was submitted on 27 Jun 2025
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Science Memes

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[–] BrazenSigilos@ttrpg.network 39 points 11 hours ago (2 children)

The highest calorie last meal

[–] diffaldo@lemmy.dbzer0.com 1 points 53 minutes ago

Happy cake day!

[–] cosecantphi@hexbear.net 6 points 10 hours ago (1 children)

nah, this is just the appetizer to a big bowl of pasta made out of antimatter.

[–] dQw4w9WgXcQ@lemm.ee 5 points 1 hour ago
[–] Evil_Shrubbery@lemm.ee 156 points 17 hours ago* (last edited 17 hours ago) (1 children)

I mean, you can heat any old rock & make it look like that ... what I'm saying is that every rock, when heated to 500+°C, will gain delicious orange flavour, but scientists don't want you to know that!!

[–] tetris11@lemmy.ml 61 points 16 hours ago (3 children)

I wanna taste that blue Cherenkov tang

I wanted to say the same - that blue color reminds me of blueberry with some mint for freshness!

[–] SippyCup@feddit.nl 47 points 14 hours ago (3 children)

Evidently plutonium just tastes metallic. And radium is flavorless.

What I'm saying is people have tasted these things.

[–] FooBarrington@lemmy.world 5 points 3 hours ago (1 children)

What about butt-chugging them?

[–] SippyCup@feddit.nl 4 points 2 hours ago (1 children)

Demon core has entered the chat?

[–] SkaveRat@discuss.tchncs.de 4 points 2 hours ago

Demon buttplug

[–] baldingpudenda@lemmy.world 21 points 13 hours ago (2 children)

I think it was when we got to toxic metals and radioactive elements that chemists where forced to stop tasting their discoveries.

I hope it went: Safety person: Hey! Stop tasting any elements or new molecules. It's been getting people severely sick or killed!

Chemist: "Ugh, fine, but ima bitch about it the whole time"

[–] atomicorange@lemmy.world 6 points 6 hours ago

I can still huff them though, right? How else will I know when my reaction is done?

[–] SippyCup@feddit.nl 15 points 13 hours ago (1 children)

I believe the guy who tasted plutonium did so accidentally when the powder got in his mouth. The metallic taste probably has something to do with how radioactive it is.

[–] CommissarVulpin@lemmy.world 9 points 11 hours ago (1 children)

Or the fact that it’s, y’know, a metal

[–] Dasus@lemmy.world 3 points 10 hours ago (1 children)

idk man. the tins I'm drinking out of don't really 'taste metallic', whereas when I got shot up with radioactive elements, I definitely described it as "having a metallic taste in my mouth".

(Oh and the answer is 'radiology' — shooting people up with radioactive elements is literally everyday stuff. There's a whole branch of medicine about it; "nuclear medicine.")

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[–] PM_ME_VINTAGE_30S@lemmy.sdf.org 146 points 18 hours ago (3 children)
[–] uservoid1@lemmy.world 52 points 18 hours ago

I was about to say that in the 40s and 50s someone ~~probably~~ taste it.

[–] boydster@sh.itjust.works 15 points 15 hours ago

The best way to tell precisely how spicy your rock is, is to taste it. That's just basic science, if you ask me.

[–] Evil_Shrubbery@lemm.ee 22 points 17 hours ago

Zomg, where are all the warning labels???

[–] ICastFist@programming.dev 8 points 11 hours ago

Deliciously ever-hot orange pie

[–] razorcandy@discuss.tchncs.de 88 points 18 hours ago (6 children)

Fun fact: a gram of plutonium contains about 20 billion calories. Yum.

[–] FiskFisk33@startrek.website 11 points 7 hours ago* (last edited 7 hours ago) (1 children)

Not dietal calories.

The calorie numbers we assign to food, measure how much energy our body extracts from them when eaten.

In this context, plutonium is closer to 0

If we instead want to measure the actual total physical energy content of materia, we would turn to E=mc^2, telling us that a gram of anything has about 20 million kcal, no matter if its plutonium or diet coke. which is a slightly less useful value on food labels :D

[–] atomicorange@lemmy.world 13 points 6 hours ago* (last edited 6 hours ago)

Technically it measures how much you can heat up a known volume of water if you burn the food. We have no way of measuring how much of that energy released by combustion actually gets absorbed and translated to ATP in the body, but it’s the best estimation we have of the relative energy content of foods.

There’s some carbohydrates, proteins, and fats that our bodies don’t seem to convert to energy (or only partially convert) but still technically contain “calories” because they’re combustible. Sugar alcohols, fiber, etc.

Plutonium doesn’t combust, but it would heat up water in a calorimeter. Really the test method’s applicability kind of falls apart when you start testing undigestible materials.

[–] Bishma@discuss.tchncs.de 96 points 18 hours ago (3 children)

And it goes straight to my hips. By which I mean the bone marrow in my pelvis.

[–] BoxOfFeet@lemmy.world 2 points 9 hours ago

Why the pelvis specifically? How did it get there? What were you doing with it?

[–] pticrix@lemmy.ca 11 points 14 hours ago

These hips don't lie : you got cancer

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[–] Beacon@fedia.io 55 points 17 hours ago (3 children)

This is a commonly quoted fun fact that is not really true. There are 2 different definitions of calorie. One means the absolute amount of energy in an object, the other means the bioavailable amount of energy that a human can extract from it using their digestive system.

So every physical object that exists has some amount of potential energy contained within it which we can express in calories, but that doesn't mean it has any bioavailable calories. For example glass has some significant amount of energy contained within it, but it has 0 bioavailable calories.

This "fun fact" mixes up the two definitions, making the statement meaningless.

(Nothing against you OP, this is a commonly repeated falsehood)

[–] razorcandy@discuss.tchncs.de 2 points 8 hours ago* (last edited 8 hours ago)

Thank you for the clarification. I wanted to go along with the joke of it looking “edible”, but context is appreciated :)

[–] Evil_Shrubbery@lemm.ee 23 points 16 hours ago* (last edited 14 hours ago) (2 children)

this is a commonly repeated ~~falsehood~~ obvious joke

And, if I have to explain the joke: it's just E=mc² (the Einstein thing ... well, the Einstein's thing's approximation), the energy (E) is the same for all mass (m) since the c is a constant.
You get the same 21 billon kcal from 1g of apples as from 1g of plutonium.
And since it's usually well known humans do not devour mass into pure energy that might trigger ppls sense of humour.
(Additionally the idea of eating metal to seek nutrition might be funny, but we do need some metals \m/.)

Also "potential energy" phrasing is weird in that context.

There are 2 different definitions of calorie.
This "fun fact" mixes up the two definitions

It's not even two definitions, the kcal is absolutely the same, it's just used to measure two different things (mass energy vs the sum of what an average human can extract via chemical processes). I see you def understand that, but it's not a different definition of a calorie (in the same way as length vs width of an object isn't a different definition of a metre).

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[–] frank@sopuli.xyz 39 points 17 hours ago

If you eat just one bite you'll never have to eat again for the rest of your life!

[–] Evil_Shrubbery@lemm.ee 27 points 17 hours ago (1 children)

Equivalent-level of fun fact: 1 gram of hay contains that much calories too!

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[–] Zerush@lemmy.ml 10 points 13 hours ago* (last edited 13 hours ago)

It is for sure delicious, but those who tested, never said it

[–] lvxferre@mander.xyz 38 points 17 hours ago* (last edited 17 hours ago) (7 children)

We need a cosmological law dictating harmful to humans = boring-looking. I mean, it isn't just plutonium, look at uranium yellowcake! It's lemon flavouring!

[–] ornery_chemist@mander.xyz 8 points 13 hours ago* (last edited 13 hours ago)

Some Pu solutions for your viewing pleasure:

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[–] southsamurai@sh.itjust.works 19 points 16 hours ago

This whole image is metal as fuck \m/

[–] logicbomb@lemmy.world 33 points 18 hours ago (7 children)

Isn't it just that color because it's hot? Like, if you cooled those off to room temperature, wouldn't they be metallic gray?

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[–] Crispycrebs@lemmy.world 15 points 16 hours ago (1 children)

What would happen if you played hockey with that?

[–] Kolanaki@pawb.social 22 points 16 hours ago (1 children)
[–] DeathbringerThoctar@lemmy.world 12 points 15 hours ago (2 children)
[–] baguettefish@discuss.tchncs.de 24 points 15 hours ago

A lot of people get cancer already and ice also already melts all the time so I don't see why this is so special

[–] buddascrayon@lemmy.world 11 points 13 hours ago

That's plutonium. You would die of radiation poisoning long before you could ever even come close to developing cancer.

[–] houndeyes@toast.ooo 23 points 17 hours ago* (last edited 17 hours ago) (2 children)

And here I thought plutonium looked like this:

[–] rockyTron@sh.itjust.works 2 points 1 hour ago

Kinda, in solution different oxidation states make pretty colors... 1000078594

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