Emulsion Photo Of A Cosmic Ray Pion
by C. Powell, P. Fowler & D. Perkins
Title
Emulsion Photo Of A Cosmic Ray Pion
Artist
C. Powell, P. Fowler & D. Perkins
Medium
Photograph - Photograph
Description
Emulsion photograph showing the birth & death of a cosmic ray pion (or pi-meson). A primary cosmic ray has struck & shattered an atomic nucleus to form the star" at the bottom of the picture. Among the fragments of the collision, a pion has been created which forms the track moving towards the top right. The pion soon strikes another nucleus, forming a second "star". The length of the pion's track is about 0.11 mm. The picture, taken in 1947 by Lattes, Occhialini & Powell, was one of the first observations of the creation of a pion."
Uploaded
May 13th, 2013
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