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Recent Posts
Pascal’s Law Explained: How Hydraulic Systems Multiply Force
Pascal’s Law Explained: How Hydraulic Systems Multiply Force How can a relatively small force applied to a brake pedal, jack handle or hydraulic control move a much heavier load? The answer is Pascal’s law. When pressure is applied to a confined fluid, the resulting pressure change is transmitted throughout the fluid. If that pressure acts […]
What Is a Fluid? Liquids, Gases and Shear Stress Explained
What Is a Fluid? Liquids, Gases and Shear Stress Explained Water clearly flows, and air moves around an aircraft or through a ventilation duct. But what about substances such as honey, grease or tar that move extremely slowly? Are they still fluids? In engineering, a fluid is a substance that continuously deforms while subjected to […]
Surface Tension Explained: Cohesion, Adhesion and Engineering Applications
Surface Tension Explained: Cohesion, Adhesion and Engineering Applications Why does water form droplets instead of spreading into an infinitely thin layer? How can a liquid rise through a narrow tube against gravity? Why does adding detergent change the way water wets a surface? All three questions involve surface tension. Surface tension is the tendency of […]