Radioactivity--The Geiger Counter

[@1eV]

*warns students to keep safe distance from the source*
proceeds to handle the source with bare hands himself

[@KarbineKyle]

I love doing this! Just be careful, and don't fry your anode wire! Also, know what the anode resistor rating is (Ω). Doing this correctly gives your G-M tube the best possible efficiency!

[@danksmokaz]

nice specy tube ...man i love this stuff hv fun

[@danksmokaz]

500 to 700v .? whats the diferance..lower sensitivity?

[@borisbellone5833]

ruclips.net/video/TFi5bLrbBJ4/видео.html una radiografia o meglio gammagrafia con un campione di pechblenda di Marie Curie