This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
Post
Mark Allerton
mark-allerton.bsky.social
did:plc:xwraz2kdpvweymdwcjjrpy75
Sure, but when I buy batteries at the drugstore they do not ask me if I want heat or electrical.
I did say this was both cool and a good solution for this case. But if you just read “90% efficient battery made of sand” it sounds like a miracle.
2025-08-30T22:02:24.004Z