The Fourth Dimension Simply Explained

LibriVox recording of The Fourth Dimension Simply Explained by Henry Parker Manning. Read in English by Availle. In January 1909 a friend of the Scientific American paid the sum of 500$ which was to be awarded as a prize for the best popular explanation of the Fourth Dimension. The object being to set forth in an essay not longer than 2500 words the meaning of the term so that the lay reader could understand it. 245 essays were submitted, the 500$ prize was awarded to Lieut.-Col. Graham Denby Fitch, Corps of Engineers, USA, and the essay was published in the Scientific American of July 3rd 190