Spinthariscope built and tested ! Here are two photos of the homemade spinthariscope I exposed the plans in my anterior post The spinthariscope (PartI) : I’ve tested this apparel with a torbernite sample from my collection, and after several minutes of adaptation to the obscurity, some flashes appeared, due to the impact of the radioactive [...]
Munich 2010 : exhibits (II)
November 7th, 2010 
FlorianIn the Hall A5, took place the exhibit on Mont-Blanc minerals, and some showcases about a few localities. The most spectacular showcase was certainly this one, with excellent fluorite samples from the Srzegom pegmatites in Poland : Showcase with slovakian kermesites and valentinites : Fluorite from Bergheim, Haut-Rhin, France : This is the alpine exhibit, [...]
Posted in Mineralogy 
Tags: exposition, fluorite, minéraux, mont-blanc, Munich, quartz, strzegom 
No Comments »Munich 2010 : exhibits (I)
November 7th, 2010 FlorianThe 47th Munich Mineral Show took place last week-end. It counts hundreds of exhibitors and more of 40 000 visitors each year, and always present some exhibits and showcases about mineralogy ant paleontology. This is an illustrated report of those exhibitions. This year, the main exhibition were about Brazilian minerals.
The spinthariscope (Part I)
September 28th, 2010 FlorianInvented in 1903 by William Crookes, the spinthariscope instrument is constituted by a tube with a magnifying lens focalized on a screen placed at one extremity. It permits to observe the scintillations emitted by the clashes of radioactive particles on the screen, but only if the instrument is placed in a dark room, because those [...]
