Radon Detector for the Student Introduction This ionization chamber radon detector is designed to be easy for the student or hobbyist to build and use. It can form the basis for a variety of experiments for Science Fair competitions, class projects, conversation pieces, or simply satisfying scientific curiosity. Despite the extreme simplicity, the chamber can detect surprisingly low levels of radon by detecting the radioactive "radon daughters" produced when radon gas decays. The detector could be used to investigate a variety of scientific questions and demonstrate scientific principles: Can quick room-to-room measurements track down sources of radon gas in a building?
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Recent Metal Detecting Finds
METAL DETECTING IDENTIFY A FIND TOM'S TREASURES
Electrostatics Electrification by Friction If a polythene rod is rubbed with cloth, the rod can lift small pieces of paper. This can be explained by stating that the rod becomes charged. A charged object will attract a neutral object until it touches and then it is repelled. It is concluded by the experiment that there are two types of charge. It has been decided that the charge that occurs on the polythene rod when it is rubbed is negative and the charge on a perpex rod when it is rubbed shall be called positive.
Find postcards showing the beach at the height of summer, they will show the 'hot spots' to search where you have the greatest numbers of people congregating. Talk to the beach attendants and bait diggers, ask the fishermen that you meet on the beach, have they noticed any recent changes to the beach by recent storms. Any newly exposed rocks at low water and what wind direction will stir up the sea and sand to expose the lower levels. Talk to old residents, do they have an interesting story to tell about their Grandfather who witnessed a shipwreck as a boy.
Where do you find this? It looks early 20 th C to me. The symbolism is political, and indicative of some of the far right organisations pre ww2.