Access to eBooks is limited to institutions that have purchased or currently subscribe to the SPIE eBooks program. eBooks are not available via an individual subscription. SPIE books (print and digital) may be purchased individually on SPIE.Org.

Contact your librarian to recommend SPIE eBooks for your organization.
Abstract
The Planck radiation law is derived in detail in several references. The discussion presented here aims to convey key insights, rather than rigorous mathematical terminology. Physical matter (atoms and molecules) at nonzero absolute temperature (T= 0 K) emits and absorbs electromagnetic radiation. Under thermodynamic equilibrium, the incident electromagnetic field and the atoms are in continual energy exchange, mutually sustaining each other's energy state by photon emission and absorption. If either the electromagnetic field intensity or the object's temperature should change, the energy exchange will adjust until thermodynamic equilibrium is re-established. The Planck radiation law is derived in detail in several references. The discussion presented here aims to convey key insights, rather than rigorous mathematical terminology. Physical matter (atoms and molecules) at nonzero absolute temperature (T= 0 K) emits and absorbs electromagnetic radiation. Under thermodynamic equilibrium, the incident electromagnetic field and the atoms are in continual energy exchange, mutually sustaining each other's energy state by photon emission and absorption. If either the electromagnetic field intensity or the object's temperature should change, the energy exchange will adjust until thermodynamic equilibrium is re-established.
Online access to SPIE eBooks is limited to subscribing institutions.
CHAPTER 3
41 PAGES


SHARE
Back to Top