Radiation heat transfer in or radiance

Radiation is the emission of radiation or heat transfer without going through an intermediary substance. When the first fire at Scout activities at your school, what did you feel when you're around a campfire flame? You will feel the warmth of a campfire from a distance apart. How hot campfire can get to your body? Heat received from a campfire flame caused by the energy beam.

The tools used to detect heat radiation or radiant heat energy called termoskop. Termoskop consists of two pieces of glass balls connected by a U pipe filled with water colored alcohol. From the results of observations made can be concluded that:

1) The surface of a black body, dull, rough and a transmitter and a good heat absorber.

2) The surface of the white stuff, shiny and smooth is a transmitter and a poor absorber of heat

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