<https://blog.arduino.cc/2019/01/09/monitor-radioactivity-levels-with-this-low-cost-geiger-counter/#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.arduino.cc/2019/01/09/monitor-radioactivity-levels-with-this-low-cost-geiger-counter/>