{"product_id":"geiger-counter-personal-radiation-detector-dosimeter","title":"Geiger Counter — Personal Radiation Detector \u0026 Dosimeter","description":"\u003cp\u003eRadiation is everywhere. Cosmic rays, granite countertops, smoke detectors, airplane altitude, medical imaging, natural radon. This device makes it audible, visible, and measurable.\u003c\/p\u003e\u003cp\u003eA Geiger-Müller tube detects ionizing radiation — alpha, beta, and gamma — by the brief conductive pulse each particle creates as it ionizes gas in the tube. Each detection produces the iconic click. This unit counts, displays dose rate in µSv\/h, logs cumulative dose, and sounds an alarm above a configurable threshold. Use it to explore background radiation, measure the elevation effect on cosmic ray flux, or test the shielding ability of different materials.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat you can measure:\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBackground radiation (cosmic rays + terrestrial sources, ~0.1–0.3 µSv\/h at sea level)\u003c\/li\u003e\n\u003cli\u003eElevation effect — radiation increases ~15% per 1500m of altitude\u003c\/li\u003e\n\u003cli\u003eShielding — compare paper, aluminium, lead, and concrete\u003c\/li\u003e\n\u003cli\u003eNaturally radioactive minerals (granite, potassium salt, uranium glass)\u003c\/li\u003e\n\u003cli\u003eDose accumulation over time\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e GM tube: SBM-20 · Detects: α, β, γ · Range: 0.01–9999 µSv\/h · Alarm threshold: configurable · Display: OLED · Data logging via USB · Rechargeable battery · Includes wrist strap\u003c\/p\u003e","brand":"Golden Physics Project","offers":[{"title":"Default Title","offer_id":54140255863076,"sku":"GPP-GEIGER-COUNTER","price":129.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1007\/2879\/9524\/files\/fnirsi_gc-01_nuclear_radiation_detector_blue_main.jpg?v=1780680388","url":"https:\/\/shop.goldenphysics.org\/products\/geiger-counter-personal-radiation-detector-dosimeter","provider":"Golden Physics Project","version":"1.0","type":"link"}