Transfer Phenomena Chapter 8a: Radiation

This lecture covers the topic of radiation, including emission, Kirchoff's law, and the absorption factor. It explores heat exchange through radiation between black and grey opaque surfaces, as well as examples of radiation phenomena. The lecture delves into concepts such as emissivity, luminance, and the influence of wavelength on radiation. It also discusses blackbody dynamics, thermal radiation, and the Stefan-Boltzmann law. Various factors affecting radiation behavior in different materials, including opaque, transparent, and metallic surfaces, are analyzed. The lecture concludes with a study of gases as radiation receivers and their absorption characteristics.