Investigate inverse square law for radiation
http://www.thephysicsaviary.com/Physics/Programs/Labs/IntensityLab/index.html
Investigate inverse square law for radiation
http://www.thephysicsaviary.com/Physics/Programs/Labs/IntensityLab/index.html
See varying E and B fields
http://www.walter-fendt.de/html5/phen/electromagneticwave_en.htm
See photons heating ground/air
http://mw.concord.org/nextgen/#interactives/physics/light-sound-physics/sunlight-infrared-physics
See varying E and B fields
Doppler Effect
Doppler Effect
Doppler Effect
Doppler Effect
Shows frequency of detected wave for moving source/detector