Use our equipment to measure the half-life of a radioactive isotope, barium-137m! Collect your data using either a Geiger-Müeller tube or a sodium iodide scintillator attached to a photomultiplier tube.
Huntington Beach California:AN ALLEGED flying saucer snapped over people’s homes was “spraying chemicals into the air”, it has shockingly been claimed. The photographs and sighting are being investigated by the …