These are photographs from location scouting in Colorado Springs and a description of my experiments with recording sound for Pictures of Infinity. … More Film Locations – Colorado Springs

This is a chart of the electromagnetic spectrum, published by the W.M. Welch Scientific Company in 1944, and posted online about three years ago.  It covers electromagnetic radiation from simple diffraction to cosmic rays, and shows the frequency allocations and their historic use across the spectrum.  (full resolution image is here) Chart of Electromagnetic Spectrum … More Vintage Chart of the Electromagnetic Spectrum, and Nikola Tesla’s Historic Invention