Kiwix is a standalone viewer (Available as desktop, phone or web server [including a Sandstorm.io package which I put together]) for archived websites of various sorts, Wikipedia being the flagship. This link lists all available things, and it's countless. However if you ctrl-f for "physics" (and keep searching until you hit the language you want) you'll see that they have subsets of Wikipedia available that cater to many interests. Physics, basketball, "for schools", history, etc.
All content packages are indeed available as torrents.
https://wiki.kiwix.org/wiki/Content_in_all_languages
Kiwix is a standalone viewer (Available as desktop, phone or web server [including a Sandstorm.io package which I put together]) for archived websites of various sorts, Wikipedia being the flagship. This link lists all available things, and it's countless. However if you ctrl-f for "physics" (and keep searching until you hit the language you want) you'll see that they have subsets of Wikipedia available that cater to many interests. Physics, basketball, "for schools", history, etc.
All content packages are indeed available as torrents.