A Poor Man's Photography At The Great Pyramid, In The Year 1865 is a book written by Charles Piazzi Smyth and published in 1870. The book is a detailed account of Smyth's journey to Egypt in 1865 to conduct experiments and take photographs of the Great Pyramid of Giza. Smyth, a Scottish astronomer and mathematician, was interested in the pyramid's mathematical and astronomical properties and sought to measure and document them through his experiments.The...