Glass block semi circular, Nairobi Industrial Area

A semi-circular glass block is a piece of transparent glass cut in the shape of a half-circle, often used in optics experiments to study light behavior. This shape allows for clear observation of phenomena such as refraction, reflection, and dispersion as light passes through it.

The flat side of the semi-circle typically serves as the entry point for a light beam, which can be directed at various angles. The curved surface then alters the light path, demonstrating how light bends or spreads out when moving between mediums of different densities.