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submitted 1 week ago* (last edited 1 week ago) by fossilesque@mander.xyz to c/science_memes@mander.xyz
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[-] blackbrook@mander.xyz 3 points 1 week ago

Don't felt tip pens work by capillary action?

[-] psud@aussie.zone 5 points 1 week ago

That do. The failure comes if the spacecraft use lower air pressure, then the ink is pushed out of the pen by the pressurised gas in the ink

The same thing causes some pens to leak in aeroplanes.

this post was submitted on 14 Apr 2025
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