Physics

Transverse and Longitudinal Wave Applet [|http://www.cbu.edu/~jvarrian/applets/waves1/lontra_g.htm]

Doppler Effect Animation http://www.walter-fendt.de/ph14e/dopplereff.htm

Electroscope Animation http://www.shep.net/resources/curricular/physics/P30/Unit2/electroscope.html

Grounding a Positively Charged Electroscope http://www.glenbrook.k12.il.us/gbssci/phys/mmedia/estatics/gep.html

Electric Force Fields http://www.colorado.edu/physics/2000/waves_particles/wavpart3.html