Tags
Earn at least 100 total score for at least 20 non-community wiki answers in the geometric-optics tag.
Awarded 4 times.
Awarded May 20, 2021 at 4:00 to
Awarded Oct 4, 2019 at 4:00 to
Awarded Aug 1, 2018 at 4:01 to
Awarded Feb 10, 2017 at 4:01 to
