Mr. Vale put on a great show for our class the first time he came in. You can tell he is really passionate about science and it is really enjoyable to watch him present his gadgets. He brought with him a peltier device, a stirling engine, an electric bug zapper and a solar motor. He made sure to explain all the mechanisms and I found it to be really interesting. The stirling engine runs when gas within it is heated up, the heat can come from even your hand. The runs off of the polarity of metal and water. The solar motor was my favorite, it almost seemed like magic when he moved the light bulb towards it and it began to spin. He explained that the peltier device and the stirling engine are both very old. It was very entertaining to have Mr. Vale in classand I look forward to his next visit.
