How to make a Sand clock style Water clock.
350mL bottle = 10min 30sec.(water), 14min(83% ethanol) @ 22℃
Ethanol is higher viscosity than the water. So Ethanol takes more time.
The viscosity changes depending on the temperature. Therefore, time is also varied depending on the temperature.
500mL bottle = 16min. Water, @ 22℃
Post time: Jun-15-2017