Hourglass with Water for Time Measurement

An illustration featuring an hourglass-like structure where water replaces sand to symbolize the measurement of time. The upper section holds agitated water, from which a single drop descends into the calmer, spherical lower chamber, creating gentle ripples. This visual concept elegantly represents the continuous and measured flow of time.

hourglass - water - time - flow - measurement - droplet - liquid - concept - fluid dynamics