I use Aard 2 with Freedict & Wiktionary dictionaries which works pretty well for me: https://github.com/itkach/aard2-android

Available on F-droid

I think the fact that it’s very chemically stable is likely a factor as well so it can be stored for effectively an infinite amount of time & it won’t degrade/react, it’ll still be gold.

It is wizardry right enough - electricity goes in, magic occurs,l and machine goes ping

It’s definitely not as exciting as it sounds. It applies a large current through some graphite rods which causes the carbon to evaporate & deposit on a sample sat underneath. It’s used to coat electrically insulating samples with a conductive layer of carbon for electron microscopy.

We have a carbon evaporator that runs linux

I use this on a daily basis on Android, works pretty well & is available through Fdroid:

https://github.com/LittleTrickster/PDF-Doc-Scan