John Westerlage wrote:


While researching lightning protection and grounding
in general I stumbled across the following:

http://www.physicstoday.org/vol-59/iss-1/p42.html

Benjamin Franklin's groundbreaking (pun fully intended)
work on the subject.

john, N5DWI

The USA Mint is releasing two silver dollar collectables on Franklin;
one, as scientist, the other as statesman. The coins are available in
either Silver Proof or uncirculated condition.