Deprecated function: abs(): Passing null to parameter #1 ($num) of type int|float is deprecated in format_size() (line 137 of core/includes/common.inc).
Cosmic Ray Introduction - Catholic University Aug 2021
Slides from an introduction to cosmic rays and how teachers can observe them using QuarkNet detectors. Talk by Mark Adams at the QuarkNet summer workshop at Catholic University August 16, 2021.
