Everyday Carry. What essentials do you carry on a daily basis?

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What do you carry on a daily basis?

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A slightly eccentric physicist's EDC (sopuli.xyz)

submitted 9 months ago by [email protected] to c/[email protected]

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An all-black LAMY Safari fountain pen filled with a mix of water, Platinum carbon black, and inkjet printer ink.
A blank sheet of A4, folded in half three times.
My passport.
A fully loaded Secrid card carrier.
A really nice rock. It has been in my pocket for a year. Don't think about it.
A dumb watch. (Casio W-59. Very small, light as a feather. Green LED-backlight display. 50 metre water resist. Tough, within reason. Effectively infinite battery life.)
A beta of the PinePhone Pro, equipped with dreemurrs archlinux.
A USB drive containing all of my computers' boot partitions and Archiso.

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[–] [email protected] 0 points 9 months ago* (last edited 9 months ago) (1 children)

Well, I can comment on water damage. My printer ink is totally immune, and so is the Platinum carbon black. I don't trust the black in felt tips, but the printer ink would be fine. Probably. My printer ink has a curious property of being perfectly water soluble until absorbed by certain materials including paper and fabric, after which it becomes pretty darned permanent.

UV damage, well, if my ink dyes are the same as in the UV faded inkjet printouts I see taped to the windows of abandoned storefronts, then that will be a problem if I decided to put the pages of my notebook on display in direct sunlight. I've never done that or have been compelled to do it, but never say never, I guess.

That's a good question, though. Have you lost data to sunbeams before, or is this more of a hypothetical?

[–] [email protected] 0 points 9 months ago (1 children)

Yeah I'm in Australia and I left my lab notebook by a window over a holiday break. It was probably getting over 50 C daily and the ink all faded. I don't think it was UV, as multiple pages were damaged, I think the ink wasn't hugely temperature stable.

It wasn't like magically gone, but faded enough that my chicken scratch was hard to read. Between that and water damage at various points I figured I'd just switch before something got fucked up beyond salvaging. Besides, you never know what'll be interesting to future generations. Whether it's a grandkid paging through something to get a sense of who you were or some researcher going through archives. Archivists ink is non acidic, so it doesn't destroy paper over time. Idk whether printer ink is.

[–] [email protected] 0 points 9 months ago

Wow, that's awesome! I mean yeah I'm sorry to hear your ink faded in the heat, but at least some good came out of it: that's a whole new mode of failure I didn't know about. Hey, maybe I'll try putting a test page in the oven's warming drawer or something.