Comment on Pens in Space

Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨month⁩ ago

• Aurenkin@sh.itjust.works ⁨1⁩ ⁨month⁩ ago

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

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  • disguy_ovahea@lemmy.world ⁨1⁩ ⁨month⁩ ago

    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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    • PhobosAnomaly@feddit.uk ⁨1⁩ ⁨month⁩ ago

      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

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      • spooky2092@lemmy.blahaj.zone ⁨1⁩ ⁨month⁩ 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.

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      • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨month⁩ ago

        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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      • disguy_ovahea@lemmy.world ⁨1⁩ ⁨month⁩ ago

        Let it be someone else’s carpet. Or in this case, driveway.

        youtu.be/Ce_uT1TXYr0

        Skip to 3:10 for the action.

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  • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨month⁩ ago

    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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    • Aurenkin@sh.itjust.works ⁨1⁩ ⁨month⁩ ago

      Makes perfect sense, thank you

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  • kwomp2@sh.itjust.works ⁨1⁩ ⁨month⁩ ago

    You misgendered round spicy flames

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• dwindling7373@feddit.it ⁨1⁩ ⁨month⁩ ago

  Wood.

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  • Karyoplasma@discuss.tchncs.de ⁨1⁩ ⁨month⁩ ago

    Wood is also combustible. You need a lot of heat to make wood burn.

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    • Bytemeister@lemmy.world ⁨1⁩ ⁨month⁩ ago

      Yeah, try lighting your pencil on fire in a 100% O2 environment. It’s not the pencil being flammable that was dangerous, it was the pure oxygen atmosphere making the pencil extremely flammable to the point where a small spark from static electricity could cause it to almost instantly immolate, that made it dangerous.

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    • chiliedogg@lemmy.world ⁨1⁩ ⁨month⁩ ago

      Sharpen the pencil and create a bunch of tiny shavings then put them in a pure O² environment. They’ll light up real fast.

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    • Fondots@lemmy.world ⁨1⁩ ⁨month⁩ ago

      Finer bits of wood, like sawdust, or pencil shavings from sharpening, catch fire much more readily than a solid chunk of wood like a whole pencil.

      Given the right environment, finer sawdust can even be explosive.

      A lot of campers and other outdoorsy types are probably familiar with using “feather sticks” to start a fire, where you take a stick and cut a bunch of fine curls into it, almost like you’re whittling down the stick but leaving the shavings attached.

      The whole stick wouldn’t readily catch fire, but those finer curls attached to it will light pretty easily and spread to the rest of the stick.

      And while I’ve seen some pretty impressive feather sticks made by people with a steady hand and sharp knife, most of the time those feathers aren’t quite as fine as most pencil shavings.

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• A_Union_of_Kobolds@lemmy.world ⁨1⁩ ⁨month⁩ ago

  [deleted]

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  • 4am@lemm.ee ⁨1⁩ ⁨month⁩ ago

    I don’t know where you got any of this, your comment makes the least sense of anyone in this post, and some of these people are actually wrong

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• Eheran@lemmy.world ⁨1⁩ ⁨month⁩ ago

  Let us just note that this would be impossible when using it to write something.

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