Quick Reference

Protective layer against fluctuations in external conditions or circumstances, or a protective shield for the outside world against harm from what is beneath or behind the insulation. Insulating material may itself be harmful to health; e.g., asbestos that was used for many years to insulate against heat or cold is a carcinogen, as are PCBs used as electrical insulators.

Subjects: Public Health and Epidemiology.

Reference entries