3 (easy?) clarifications about switches.

[bdmanevitz]

Thanks again, everyone! I go the project finished and tested and everything. It doesn't really do justice to the work "under the hood" and the help all y'all gave me, but here's a picture of it all put away and ready to roll out to where it'll be used.

Thanks again, and happy holiday to those to whom it's relevant.

--Ben

[GoForSmoke]

The topics linked here give background for electricity and magnetism, the how and why of what works.

http://hyperphysics.phy-astr.gsu.edu/hbase/emcon.html#emcon