Glass rod for static electricity, Nairobi Industrial Area

A glass rod is a smooth, cylindrical object made from high-quality glass, typically around 30–50 cm in length and about 1–2 cm in diameter. It serves as an excellent conductor of static electricity due to its ability to gain or lose electrons when rubbed with materials like silk or wool. This charging process results in a positive charge on the glass rod, making it ideal for various electrostatic experiments.

When used in demonstrations, the glass rod can attract lightweight objects such as bits of paper or small pieces of plastic, illustrating the principles of electrostatics. It is commonly employed in educational settings to teach concepts such as charge transfer, electric fields, and electrostatic forces, making it a fundamental tool for understanding static electricity.