Cylindrical structures used for this purpose only properly function if their radius exceeds a critical radius equal to k over h. Structures like junctions act as “bridges” that impede this purpose by having high psi-value. This purpose is the primary reason why a certain material may be “double-glazed” or “low e.” Materials (-5[1])used for this purpose are rated by their R-value, which is additive for materials layers stacked on top of each other. Materials used for this purpose are formed by spinning them like cotton candy to create large pockets that trap air. The component of the (10[1])building envelope used for this purpose is typically assessed (10[1])for using an infrared camera. For 10 points, fiberglass wool is used in buildings (10[2])for what purpose due to its low thermal conductivity? ■END■