According to science writer Ehsan Masood, these include water fountains that changed their patterns at intervals, clocks with visual gimmicks, and vessels that served drinks automatically and replenished themselves using clever combinations of floats, valves, and siphons.
Menurut penulis sains Ehsan Masood, itu mencakup air mancur yang polanya berubah secara berkala, jam yang atraktif, dan kendi yang bisa menuang air secara otomatis lalu mengisi ulang dengan menggunakan perpaduan pelampung, katup, dan leher angsa.