the ghost is taken from: http://www.freestockphotos.biz/stockphoto/12084 (public domain)
the function is taken from: https://en.wikipedia.org/wiki/File:Finite_element_method_1D_illustration1.svg (CC-0)
the ghost is taken from: http://www.freestockphotos.biz/stockphoto/12084 (public domain)
the function is taken from: https://en.wikipedia.org/wiki/File:Finite_element_method_1D_illustration1.svg (CC-0)
