Jordan14

But can something that is not there (photons) exist in a dimension, is it possibleto say that.

So does that mean a shadow is three dimensional. Beacause I thought like I wrote above a shadow is dimensionless as its nt actually an object just a lack of something so you cannot define a shadow as existant.

I have asked this in other forums but I don't get much of a response. In what dimension does a shadow exist. I thought that as everything in our universe is made of atoms you could not construct a 2d object. However obviously a shadow is not comprised of atoms but of a deprivity of photons. You can measue the length and width of a shadow so is a shadow a truely 2 dimensional object. I don't think a shadow can have a volume. However thinking back how can a shadow exist in two dimensions because a shadow will lay across rounded objects and I think planar objects can not be twisted.