firing+material
131Railgun — A railgun is a purely electrical gun that accelerates a conductive projectile along a pair of metal rails using the same principles as the homopolar motor.Railguns use two sliding or rolling contacts [http://www.youtube.com/watch?v=M0YRslyGiOI… …
132Sacco and Vanzetti — This article is about the individuals Nicola Sacco and Bartolomeo Vanzetti. For 1971 film, see Sacco e Vanzetti. For 2004 docu drama, see The Diary of Sacco and Vanzetti. For 2006 documentary film, see Sacco and Vanzetti (film). Bartolomeo… …
