Tuesday, May 20, 2014

Wednesday, April 30, 2014

NASA Tour of the Electromagnetic Spectrum



http://murphyscience.weebly.com/uploads/1/3/2/8/13285190/video_ws_tour_of_em_spectrum.pdf

Video



Friday, April 18, 2014

Giant Xylophone in the forest

Where is the sound coming from? Why are there different notes?