Open talk, no cost, you don’t have to be an IoP member, just register for the talk
You don’t need to be a member, but you will need to register:
This event will be very different, there will be no PowerPoint Presentation, rather we will look at examples of valves from the Radio Museum, their operation will be described using a flipchart and there will be a demonstration of valves working on the valve tester.
“We will start with a description of the Edison Effect Lamp, which was patented on 15th November 1883 and is the worlds first electronic patent. We will then progress through diodes, triodes, tetrodes, beam tetrodes and pentodes learning about the various ideas and techniques of engineers in the early to mid twentieth century. Our first valve will be an Osram Type R, the first valve to be commercially made in the UK. Our example is from September - October 1918 and was made for the RAF.”