Deriving Poynting Vector from EM Waves

AI Thread Summary
The discussion focuses on deriving the Poynting vector from the energy density of electromagnetic waves and obtaining its average value. The user seeks online resources that provide these derivations for easy copying into a PowerPoint presentation. They express frustration with the time-consuming process of finding reliable sites, despite having access to books for understanding the concepts. Recommendations for specific resources or websites that compile optics formulas and derivations are requested. The conversation emphasizes the need for efficient access to information rather than detailed explanations.
tmoan
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can anyone help me derive the poynting vector from energy density of electromagnetic waves?
and how we obtain average value <S>
thanks
 
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The standard derivation is available in many places, such as Jackson's book. What have you tried so far?
 
i need the way to derive poynting vector and the average value from energy density of electromagnetic waves on the internet so i can copy it on power point
coz i don want to type them one by one on word and then copy paste
also any site that has all those optics formulas derived on stuff like radiation
electric dipole moment and creation of electromagnetic waves in antennas
you see my problem is wikipedia and sites like that has everything in them.
i didn't use to browse a lot of sites before. so i could use some help thanks
 
btw i have books where i can read the derivations i don't need explanations i understand the concept of all this very clearly
but as i mentioned before just finding the proper site to browse takes a lot of my time
 

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