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  • Libby’s test for PDF thumbnail
  • Rental Automobile Dubai: Every Thing You Need to Know About
    Introduction Renting a automobile in Dubai can provide a convenient and flexible method to discover this vibrant city and its surrounding areas. With a plethora of rental automobile companies to choose from, it’s essential to understand the ins and outs of renting a automotive in Dubai to make sure a easy and hassle-free experience. In…
  • An Audion By British Thomson-Houston?
    This author has scanned all the magazines that appear on this website and many had very intersting articles like this one that Fin Stewart submitted in Vol. 14, No 2, April, 2012. Fin Stewart quote: “I picked up a mint copy of the book: BTH, Reminiscences – Sixty Years of Progress published in 1946, and…
  • Diodes From the Twenties
    John Fleming, working for the Marconi Wireless Telegraph Co. in London and was the first to experiment with the Edison Effect light bulb. Some of the 2nd generation Fleming valves were tubular and were mounted in what became known as the “Gallows Type”. Third and fourth generation Fleming valves took on the shape of English…
  • DeForest Audion Box with French Markings
    DeForest Audion with a normal looking Box