# User sammy gerbil

## Recent History

9
hours
ago
 posted a comment Questions from a jumping kangaroo
21
hours
ago
 posted a comment Questions from a jumping kangaroo
1
day
ago
 posted a comment Questions from a jumping kangaroo
1
day
ago
 posted an answer SHM with elastic collision.
1
day
ago
 posted a comment Diffusion with an even number of reflecting boundaries