While your at it, you might want to have a look at electromagnetisim The average rep of a user posting on one of these tags is less than 30, and 20% to 30% of the questions tagged with
I would be more supportive of merging these tags and coming up with a better tag description.
One of the main reasons for this is one of the major site topics is:
"the theory and simulation of electromagnetic forces"
so if you have no electromagnetic tag then there would be no way to group questions about electromagnetic forces under one banner.
I would like to see a better tag description, maybe I'll write one later. But at least merge electromagnetic and electromagnetism or just move some of the best electromagnetic questions to electromagnetism and delete electromagnetic.