Geiger circuit vs thorium gas mantle.
314 views · Published 17 August 2012 · 0:29 · Indexed 14 October 2026
Channel: jo0ls · 2012 · Science & Technology
My gieger circuit has improved. The power supply is more stable. The pulses go through a pulse discriminator and a pulse shaper to make sure no noise gets through. The source is a Coleman gas mantle, the old sort that contain Thorium. Also there are two tubes of Tritium (from glow in the dark key-rings) resting on top of the LND712.
