What causes incandescence/Joule heating: electronic or ionic movement?

Subject: What causes incandescence/Joule heating: electronic or ionic movement?

Date: Sat Aug 19 21:22:37 2000
Posted by Tom Toledo
Grade level: grad (science) School: Univ. Sao Paulo
City: Sao Paulo State/Province: SP Country: Brazil
Area of science: Physics
ID: 966734557.Ph

Message:


The passage of electric current through a filament heats it up (Joule
heating), sometimes to the point of displacing its blackbody peak intensity
to the visible range (incandescence). What is the main origin of the
electromagnetic emission: the vibration of the crystalline ions, or quick
and successive scattering of electrons? Or both?

Re: What causes incandescence/Joule heating: electronic or ionic movement?

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