Vacuum Tubes Present History: First Terahertz Vacuum Amplifier Created

Vacuum Tubes Present History First Terahertz Vacuum Amplifier Created Vacuum tubes bring back visions of antique electronics, but these are not your grandparents’ TV sets. DARPA-sponsored research has taken tools developed by the semiconductor and MEMS revolution & microfabrication methods and materials;and applied them to reliable, efficient vacuum tube technologies. For more, read the article…

Museum Lab Column: Photographing Glass: Controlling Contrast

Museum Lab Column: Photographing Glass: Controlling Contrast Vacuum tubes have many different materials, glass, metal, ceramics, and so many reflective surfaces, combining to make vacuum tube photography quite difficult, especially for archival work. In this tutorial, Andrew Fortune shows his excellent light table and lighting design for the difficult photography of glass objects, and we…