Fourth Dimension Simply Explained

The question of the existence of space of four dimensions is one which we cannot escape. It may be well to remind the reader that this is not a mathematical question, though the most interesting of all. The possibility that we are a part of a four-dimensional space with physical limitations which confine us to a three-dimensional space, and with limitations of our senses which prevent us from perceiving anything outside of this space this possibility excites the interest of all who are inclined to abstract speculation.
15x21 cm, 314 pgs