> Some experts were not to bright in the military. Hedy Lamarr invented a way to guide torpedo,s. That could not be blocked. The Navy experts laughed at her. She gave us cell phones and many other things based on her invention.
Although Hedy Lamarr did patent a technique we now call "spread-spectrum communications", her contributions to that technology are overstated. Her invention was not practical to implement with 1940s technology. Interestingly, modern remotely-guided torpedoes are not radio-controlled but rather wire-guided. Not only are wire-guided torpedoes and missiles virtually jam-proof, wire guidance could have been implemented in the 1940s.
Your anecdote regarding an American selling his tank design to Germany is dubious. German tank design was very much an evolution, starting with under-gunned and under-armored models in the early days of WWII up to the heavy Panther and Tiger tanks used at the end of the war. When the Germans encountered British, American and Soviet tanks, they studied them and incorporated what they learned into their own designs. The heavy German tanks were notoriously unreliable and (fortunately for the allies) Germany wasn't able to produce enough of them.
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Today's Featured Article - Tractor Hydraulics - The Basics - by Curtis Von Fange. Hydraulics was one of the greatest inventions for helping man compound the work he can do. It’s amazing how a little floor jack can lift tons and tons of weight with just the flick of a handle. What’s even more amazing is that all the principals of hydraulic theory can be wrapped up in such a small package. This same package applies to any hydraulic system from the largest bulldozer to the oldest and smallest tractor. This short series will take a look at the basic layout of a simple hydraul
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