americans trying to save the political devision in 2025
this post was submitted on 14 Apr 2025
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Empires wasting resources on nonflammable space pens while the whole planet burns.
Technically correct. i guess, money better spent elsewhere
The reason not to use pencils in Space wasn't that Pencil are inflamable, the main reason was the graphit dust produced by Pencils, which because of the lack of gravity, enter floating in the electronic, causing short circuits as main risk.
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(19 replies)
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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(18 replies)
Plus, inhaling graphite dust since it doesn't fall doesn't sound fun.
Plus, graphite dust and electronics are also not a great combination.
It’s carbon dust, which your body is pretty good at dealing with, and in quantities so trivial you probably already inhale more currently than you would using a pencil in an otherwise mostly sterile spaceship (at least sterile compared to earth)
Have you broken a pencil tip? I wouldn't want to breath that in after it goes flying.
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(10 replies)
NASA used crayons before those space pens, and iirc the pens were available for a while before they tried them
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(1 replies)
This is inaccurate. Graphite is not flammable. It forms small particles that, mixed with air, could combust in a dust explosion, just like flour.
I'm probably just being dense but what's the difference between being flammable and being susceptible to combustion?
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
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.
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(5 replies)
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.
Makes perfect sense, thank you
You misgendered round spicy flames
Let us just note that this would be impossible when using it to write something.
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