Hydration Progression Illustration: Empty, Half-Full, and Full Glass Diagram #3772632 (License: Personal Use)

This black-and-white line illustration features three identical cylindrical drinking glasses arranged horizontally, each rendered with fine cross-hatching for depth and shadow. The leftmost glass contains a shallow layer of liquid, the middle holds liquid at approximately 50% capacity, and the rightmost is filled nearly to the brim. The style evokes vintage scientific diagrams or educational infographics, emphasizing clarity and conceptual progression.

Commonly used in health articles, nutrition guides, educational materials on measurement or fractions, and motivational content about goal-setting (e.g., “fill your cup”). Matches user intent for visual metaphors of progress, capacity, or hydration awareness.