Keywords: Neutrino bubble chamber decay overlay.png The world's first neutrino observation in a hydrogen bubble chamber was found Nov 13 1970 on this historical photograph from the Zero Gradient Synchrotron's 12-foot bubble chamber The invisible neutrino strikes a proton where three particle tracks originate right The neutrino turns into a muon the long center track The short track is the proton The third track is a pi-meson created by the collision This picture is rotated to the original photograph and includes a colored overlay which shows the visible and invisble tracks of the decay Also the weak neutrino decay is shown on the right hand side From Argonne National Laboratory http //www anl gov/Science_and_Technology/History/Anniversary_Frontiers/86photo html <gallery> File FirstNeutrinoEventAnnotated jpg Annotated version </gallery> First_neutrino_observation jpg 50 2012-03-11 16 26 UTC First_neutrino_observation jpg derivative work Messier colored overlay rotation contrast zoom messier First_neutrino_observation jpg PD-USGov Original upload log This image is a derivative work of the following images File First_neutrino_observation jpg licensed with PD-USGov 2005-05-05T12 30 03Z Svdmolen 432x336 32295 Bytes <nowiki>The world's first neutrino observation in a hydrogen bubble chamber was found Nov 13 1970 on this historical photograph from the Zero Gradient Synchrotron's 12-foot bubble chamber The invisible neutrino strikes a proton w</nowiki> Uploaded with derivativeFX Bubble chambers Neutrino detectors |