One big technological advancement was the Hoover dam; the hoover dam creates hydroelectric power and supplies drinking water to cities near it. Another development was that Radium was the first element to be made synthetically. Also better quality television for them it was considered high quality, the antenna was invented. In addition the 1936 Olympics were the first to be televised. The most impressive camera used at the Olympic is called “Fernsehkanonen” Moreover Canada started broadcasting radio Inge Lehmann argued that the earth interior was solid. On June 29th the first controllable helicopter was tested. They being to show fronts and isolines on weather maps. Keynes book “The General Theory of Employment, interest and money” was published.
http://www.earlytelevision.org/1936_olympics.html
http://www.watersheds.tv/old_cattails/hooverdam.asp