Definition
Glass fiber is a material made of extremely fine fibers of glass. It's strong, lightweight, and resistant to heat and chemicals. Think of it as spun glass, like cotton candy but much tougher. It is used in a wide range of applications, from insulation in buildings to reinforcing plastics in cars and boats. Unlike optical fiber, glass fiber is generally not used to transmit light. Its strength and durability make it ideal for structural and insulation purposes.