Reflectivity, for radiant barrier purposes, can be defined as a measure of how much energy is reflected and not absorbed by a barrier. Very shiny, aluminized plastic can reflect 98% of ...

Infra-red energy is electro-magnetic energy that is not visible. It lives in the light wavelength spectrum next to the color red. It travels at the speed of light (186,000 miles ...

Radiant heat is heat that is diffused from a heat source through space, with or without air (e.g. the heat from the sun is radiant heat). Most of the heat ...

Heat moves by conduction , convection , and radiation . Conduction is the process that occurs in substances denser than air like water, wood and stone where the heat moves ...

It absolutely is! Radiant energy is absorbed if not reflected resulting in a transfer of energy which is heat. Attic insulation effectively absorbs energy. This is why a reflective barrier is ...