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optical fibers
Glass
Glass is a better insulator than plastic. Plastic is used on wire for insulation purposes because of its flexibility, where as glass is not. Glass is used as insulators for holding wires to cross arms on power poles as plastic would not stand up to the weather year after year.
Glass and plastics are not good conductors of electricity.
The word glass in this case isn't necessarily referring to the material glass, but instead referring to a small, handheld vessel for drinks, or a cup. Things that are usually, if not always made of glass have often been referred to as a "glass". For instance, a mirror may sometimes, but not very often, be referred to as a glass. With glass cups, and goblets the name "glass" stuck and became the definitive name for anything with that shape for the purpose of holding drinks. When one of these is made of plastic, it can be referred to as a "plastic glass", especially if the plastic is designed to visually replicate glass.
optical fibers
A hologram is basically a 3D image formed by light beams. The long, thin, flexible strands of glass or plastic that is used to carry light signals and telecommunication data for long distances is known as Fibre Optics.
The air in the atmosphere causes light to flicker. Therefore Its called atmospheric distortion. Its why the sun and moon are larger, the closer they are.
Good optical fiber is made of glass, but inexpensive fiber is sometimes made of plastic.
Non conductive materials like plastic or glass.
Plastic is easier to carry than glass!
Fibre optic
optical fibers are strands of glass or plastic that use light to pass information. It is very fast and is not disturbed by electromagnetic fields.
Fiber Optic cables carry data as light.
Fiberglass is a composite material reinforcement. Parts made using fiberglass are typically still referred to as "fiberglass." Fiberglass parts are made from strands of glass fiber which are suspended in a polymer (plastic) matrix (resin). Fiberglass cloth is a fabric comprised of strands of glass fibers that are bundled together in different weaves. Unlike carbon fiber, fiberglass can be purchased in the form of cloth where long continuous stands of glass are woven into a fabric using a predetermined weave, or in chopped strand mat where short strands of glass are formed randomly into a fabric and held together by a weak styrene styrene bonding agent. Fiberglass cloth has good direction strength while fibergas mat has a lower strenght but is equal in all directions. The two most common glass types are E-glass and S-glass. S-glass is a higher strength glass reinforcement, sometimes referred to as structural-glass, and as you can imagine it is a bit more expensive. For more information on composite materials including fiberglass, carbon fiber, and kevlar see http://www.baronecomposites.com/Composite_Materials_FAQ.htm
High purity glass strands.
Plastic drinking glasses are useful if one has young children, or is considering a picnic. They can be picked up at supermarkets, or for a more sturdy plastic glass, Ikea carry a good range.