Genuine Mediumship or the Invisible Powers
"[...] Moreover, as every text book on science informs us, there are sounds too low as well as those too high for the human ear to register, but which are registered by delicate instruments. Again, there are colors beyond the place of red, at one end of the visible spectrum; and others beyond the place of violet at the other end of that spectrum, which the human eye is unable to register and detect, but which our apparatus in the laboratory plainly register. The ray of light which registers on the photographic plate, and which causes sunburn on our[...]."
- Paperback | 170 pages
- 152.4 x 228.6 x 9.91mm | 312.98g
- 08 May 2015
- United States
- black & white illustrations