Tags
Earn at least 400 total score for at least 80 non-community wiki answers in the electromagnetic-radiation tag.
Awarded 5 times.
Awarded Dec 7, 2020 at 14:07 to
Awarded Jan 29, 2019 at 4:02 to
Awarded Mar 6, 2018 at 1:57 to
Awarded Oct 6, 2016 at 4:01 to
Awarded Jun 4, 2015 at 3:00 to
