Elektronika MK61
l.i.papadopol
Bringing an Elektronika MK61 Back to Life My friend Erik recently sent me a curious and interesting object: a Soviet-made “Elektronika MK61” calculator. Along with the device itself, I received…
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I-131
Analysis of Iodine-131 Sample I recently received a sample of the isotope I-131. At the time of my initial tests, the sample had an activity of approximately 450 kBq. The…
DIY Geiger clicker: a simple radiation detection project
This project stems from my desire to create a Geiger clicker using salvaged materials. Unlike a Geiger counter, which measures the intensity of beta and/or gamma radiation, a Geiger clicker…