The deceptively cute Gray Jay is one of the most intrepid birds in North America, living in northern forests year-round and rearing chicks in the dark of winter. Highly curious and always on the lookout for food, Gray Jays eat just about anything, from berries to small animals. They may even land on your hand to grab a raisin or peanut.
A thermal insulator is something that prevents heat from moving from one place to another. There are 3 main ways that heat can travel: convection, conduction, and radiation. Typically the phrase 'thermal insulator' refers to a material that blocks conduction.
Insulation and Heat Tracing. Section 11. THERMAL INSULATION Insulation is defined as any material that resists the transfer of heat energy. The purpose of thermal insulation is therefore either to keep heat confined in the mechanical system or to keep it excluded from the system by preventing or resisting heat transfer.