@viewinghistory on Instagram: "Pascal’s principle is surprisingly easy to see when you try it with everyday objects. In this clip, three glasses are filled with juice and connected using straws, and a small push on one side sends the liquid rising in the others. The pressure applied to the fluid spreads equally in all directions, making every glass react at the same time. It’s a quick, visual way to show how fluids behave under pressure — the same principle that powers hydraulic lifts, brakes, a