- a candle works by continuously melting its own structure into a fuel source that's then pulled up the wick by capillary action, vaporized by the heat of the flame, and combusted. the amount of exposed wick is regulated by the parts that aren't offgassing vaporized wax burning away. the balance of all this is kind of astonishing.
- i don't really understand anything about sailing, but having read a patrick o'brian novel i think the age of sail was based on quite a few of these.
@brion and, ok, last entry: https://en.wikipedia.org/wiki/Frisbee