single-pass condenser
51Nikola Tesla — Tesla, aged 37, 1893, photo by Sar …
52Sound film — …
53Crystal radio — Crystal set redirects here. For the Australian rock band, see The Crystal Set. A modern reproduction of an antique crystal set. It is tuned to different stations by moving the sliding contact (right) up and down the tuning coil (red). The device… …
54biology — /buy ol euh jee/, n. 1. the science of life or living matter in all its forms and phenomena, esp. with reference to origin, growth, reproduction, structure, and behavior. 2. the living organisms of a region: the biology of Pennsylvania. 3. the… …
55Albert Schweitzer — For the documentary film, see Albert Schweitzer (film). Albert Schweitzer Born …
56Laboratory glassware — Three beakers, a conical flask, a graduated cylinder and a volumetric flask …
57Carl Wilhelm Siemens — Born 4 April 1823 (2011 04 04T18:23) Gehrden …
58Owasco class cutter — USCGC Owasco (WPG 39), 1945. Her World War II armament of twin 5 /38 cal gun turrets is apparent here. Class overview Builders: (1) Western Pipe Steel (2) US Co …
59New Plymouth Power Station — New Plymouth Power Station …
60Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …
