this post was submitted on 14 Apr 2025
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Science Memes

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[–] jjagaimo@sh.itjust.works 175 points 3 months ago (16 children)

Besides that, NASA wasn't the one that funded the research behind the pen, they bought the completed pens. The expenses for the research were funded by Fisher

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[–] JohnDClay@sh.itjust.works 89 points 3 months ago (12 children)

Plus, inhaling graphite dust since it doesn't fall doesn't sound fun.

[–] Tiptopit@feddit.org 67 points 3 months ago

Plus, graphite dust and electronics are also not a great combination.

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[–] holycrap@lemm.ee 60 points 3 months ago (1 children)

NASA used crayons before those space pens, and iirc the pens were available for a while before they tried them

[–] mojofrododojo@lemmy.world 10 points 3 months ago* (last edited 3 months ago)

NASA used crayons before those space pens, and iirc the pens were available for a while before they tried them

this is partially correct; the missing pertinent bit - there was a crayon shortage due to the influx of marines recruited for the vietnam war (mmm crayola), forcing NASA to seek alternatives.

[–] Draegur@lemm.ee 51 points 3 months ago (1 children)

Also you DON'T FUCKING WANT GRAPHITE DUST FLOATING AROUND IN ZERO G

[–] pdqcp@lemmy.dbzer0.com 15 points 3 months ago* (last edited 3 months ago) (2 children)

Why not? I'm not well versed in the theme. Would it be flammable?

edit: just saw another post mentioning this: lack of gravity, enter floating in the electronic, causing short circuits as main risk.

[–] SynopsisTantilize@lemm.ee 17 points 3 months ago (1 children)

Also your body doesn't do a good job of breaking it down either. Id imagine that in your lungs would suck.

I have a piece of graphite in my leg from 7th grade still. I'm 33.

[–] Adalast@lemmy.world 4 points 3 months ago (2 children)

I have a graphite stain in my palm from 8th grade and I'm 40.

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[–] LovableSidekick@lemmy.world 5 points 3 months ago* (last edited 3 months ago)

The theme is to pretend recently-learned information was available half a century ago, and also to ignorantly inflate its importance. It turns out exposure to graphite dust in large concentrations can cause respiratory problems (like any kind of dust), but the amount of graphite emitted into the air by pencil use is insignificant, even in zero gravity.

[–] mojofrododojo@lemmy.world 41 points 3 months ago (1 children)

also, fucking pencil shavings?

pencil shavings contain graphite (great for getting into shit and shorting shit out) and thin paper (think, kindling)

did the russians gnaw the fucking things sharp? no? idiots...

[–] Madison420@lemmy.world 11 points 3 months ago (13 children)

Grease pencil, you pull a tab and the things unrolls.

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[–] FinishingDutch@lemmy.world 32 points 3 months ago (1 children)

I’ve owned a fair few Fisher Space Pens throughout the years. It’s an interesting bit of space memorabilia that’s functional and affordable. It’s an impressive bit of engineering.

As a space nerd, I love the pen. As a pen guy…. There’s better options. The cartridge just doesn’t write as smooth as I like, nor is it a really bold, saturated line. For daily actual writing use, I use a Lamy Safari rollerball or a Pilot B2P.

[–] rumba@lemmy.zip 8 points 3 months ago (1 children)

They're small, but when you open them up, they're full-sized. It fits in my knockoff Ridge wallet. I buy blue cartridges because I hate signing stuff in black.

10/10 for me, but it's all about utility for me.

[–] lunasandwich@lemmy.world 5 points 3 months ago

Rite In The Rain pens are awesome too. Ultralight for backpacking.

[–] Karyoplasma@discuss.tchncs.de 31 points 3 months ago (6 children)

This is inaccurate. Graphite is not flammable. It forms small particles that, mixed with air, could combust in a dust explosion, just like flour.

[–] Aurenkin@sh.itjust.works 24 points 3 months ago (4 children)

I'm probably just being dense but what's the difference between being flammable and being susceptible to combustion?

[–] Skua@kbin.earth 19 points 3 months ago

In technical safety terms, combustibles are harder to ignite than flammables. So diesel and olive oil are combustibles, for example, because neither of them give off enough ignitable vapour at room temperature. Ethanol does, so it gets classified as flammable, and you need to store and handle it more carefully than diesel. Then there's really horrible stuff like triethylborane which will catch fire upon meeting oxygen even at temperatures well below the freezing point of water

Of course in casual usage they mean the same thing

[–] disguy_ovahea@lemmy.world 16 points 3 months ago (2 children)

They’re referring to the relationship between surface area and combustion. Talc, for example, melts but does not burn. Talc powder can ignite if blown over an open flame.

[–] PhobosAnomaly@feddit.uk 4 points 3 months ago* (last edited 3 months ago) (3 children)

My first thought was: "I must try this". I need to read my house insurance policy first.

Curiosity got the better of me when I waved an alcohol wipe over an open flame. There's still a dark mark on the office carpet tile from where I had to stamp it out.

[–] spooky2092@lemmy.blahaj.zone 7 points 3 months ago

Please invest in a fire blanket and keep it near by when you do stupid things with fire.

Signed, a fellow fire bug

Mine paid for itself the first time a flame got out of control while I was having some fun. No lasting burns to human or objects in my office lol.

[–] Karyoplasma@discuss.tchncs.de 5 points 3 months ago (1 children)

Keep away from dust explosions, they are very uncontrollable because they ignite very fast and produce a lot of heat. It's technically not an explosion, but it definitely is an easy way to burn your house down.

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[–] Karyoplasma@discuss.tchncs.de 15 points 3 months ago* (last edited 3 months ago) (1 children)

You're not dense for asking a question. Without asking questions, it's Impossible to learn.

The flash point is different. The flash point is the temperature that is necessary to create enough vapor for the substance to ignite.

Flammable material has a low flash point, which means it catches on fire easily. Think gasoline. Combustibles need a higher initial temperature, but eventually they will burn and sustain the burning until running out. Think wood.

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[–] dwindling7373@feddit.it 11 points 3 months ago (1 children)
[–] Karyoplasma@discuss.tchncs.de 4 points 3 months ago* (last edited 3 months ago) (3 children)

Wood is also combustible. You need a lot of heat to make wood burn. Hold a lighter to your pencil, it will not instantly catch fire, do the same with paper and you need a water bucket nearby.

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[–] neidu3@sh.itjust.works 31 points 3 months ago (1 children)

Apollo 1 resulted in a lot of improvements regarding fire safety.

[–] yesman@lemmy.world 9 points 3 months ago (1 children)

People drag the Soviets for being reckless with the lives of their crews, but forget that the USA melted three men in a training exercise.

[–] mojofrododojo@lemmy.world 14 points 3 months ago

at least those three were known, acknowledged and not covered in secrecy.

we really have no idea how many the sov's lost in their rush to stay ahead / catch up to the moon landings. truly, there's no way to fucking know, even the cosmonauts themselves never knew the total extent.

maybe they both deserve to be dragged a bit eh? pfft

[–] BeNotAfraid@lemmy.world 18 points 3 months ago (1 children)

Think of how revolutionary crayola twistables would have been for NASA?

[–] SynopsisTantilize@lemm.ee 6 points 3 months ago (6 children)

So they could have infinite chunks of broken crayan floating around them. I can never not break those no matter how lite I use rhem

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[–] LovableSidekick@lemmy.world 11 points 3 months ago* (last edited 3 months ago)

For decades these pens have been brought up to criticize wasteful spending, inaccurately. Fisher Price didn't even develop the pens for NASA, they were just a sales gimmick, and NASA didn't spend thousands of dollars each on them, they just bought them. Space flight was getting a lot of publicity back then, so products that related themselves to space were popular, like Space Food Sticks - tootsie-rollish snacks supposedly full of protein and nourishment. To me they tasted too much like raw flour. "Energy" of course was a euphemism for sugar.

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