List of hospitals in Arizona (U.S. state), sorted by hospital name. 1  Abrazo Arizona Heart Hospital - Phoenix, Arizona. 2  Abrazo Central Campus (formerly Phoenix Baptist Hospital) - Phoenix, Arizona. 3  Abrazo Maryvale Campus (formerly Maryvale Hospital Medical Center) - Phoenix, Arizona.
insulation - the act of protecting something by surrounding it with material that reduces or prevents the transmission of sound or heat or electricity. protection - the activity of protecting someone or something; the witnesses demanded police protection.
Everything conducts heat, but some materials are very good conductors and some are poor conductors. Insulation is made of materials that are poor conductors. The best insulation is air, because it is a gas and gases are much poorer conductors than solids and liquids. Also they are lighter, and light weight is always desirable for insulation. The problem with air is it moves around too much.