A shadow does not actually defy gravity. It appears to do so because the concept of gravity is not directly related to the formation of shadows. Shadows are formed when an object blocks light, preventing it from reaching a certain area behind the object. Gravity, on the other hand, is the force that attracts objects toward each other.
The formation of a shadow depends on the interaction between light sources, objects, and the surrounding environment. When light from a source, such as the Sun, is blocked by an object, a shadow is created on the opposite side of the object. The shape and size of the shadow depend on various factors, including the position and orientation of the object, the angle of the light source, and the distance between the object and the surface on which the shadow falls.
Gravity, being a fundamental force of nature, affects all objects in the universe. It determines the motion and behavior of objects, keeping them anchored to the Earth's surface and governing the orbits of celestial bodies. However, the force of gravity itself does not directly impact the formation of shadows.
In summary, shadows are formed when light is obstructed by an object, while gravity is the force that attracts objects toward each other. The two concepts are distinct and not inherently related to each other.