Vidushi Chadha Goel on Instagram: "✅Scalar Quantities Definition: A physical quantity that has only a magnitude and no direction. ✅Vector Quantities Definition: A physical quantity that is described by both its magnitude and its direction ✅Speed Definition: The rate at which an object covers distance. Type: A scalar quantity, meaning it only has magnitude (a number) ✅Velocity Definition: The rate of change of an object’s position (displacement) over time, including its speed and direction #teach

This video shows a porous concrete pipe, commonly used in drainage and stormwater management systems. Unlike regular concrete, porous concrete has a high void content, allowing water to flow through it naturally. This makes it ideal for sub-surface drainage, soakaways, wells, and groundwater recharge systems. The white powder you sometimes see on concrete is efflorescence—a harmless salt deposit that appears when moisture evaporates through the material. While not dangerous, it can indicate that