Glass is a good insulator because it does not allow the flow of heat easily. It is made up of a poor conductor material which means that it does not allow free movement of electrons. The lack of free-flowing electrons results in glass not transmitting heat as well as other materials. Additionally, glass is a poor conductor of sound, electricity, and thermal energy, which means it is an excellent insulator. Lastly, glass can be made with different thicknesses and compositions, making it a versatile insulator for a variety of applications.
Glass is not a good insulator, rather it is a good thermal conductor. Insulators are materials that do not allow the flow of heat or electricity very well, while conductors allow the flow of heat or electricity easily.
