You are about to get more English speaking views, so thank you for the subtitles! Great nerd, great science, and great presentation. Very entertaining.
感覺就是2019 iypt 的題目XD 5. Filling Up a Bottle When a vertical water jet enters a bottle, sound may be produced, and, as the bottle is filled up, the properties of the sound may change. Investigate how relevant parameters of the system such as speed and dimensions of the jet, size and shape of the bottle or water temperature affect the sound. kzbin.info/www/bejne/a3rClKmJl99lopY