Visible Procrastinations

Jeff VanderMeer, author of The Steampunk Bible, defines it through a fittingly clunky, though ornate, equation:

Steampunk = Mad Scientist Inventor [invention (steam x airship or metal man/baroque stylings) x (pseudo) Victorian setting] + progressive or reactionary politics x adventure plot.

Steampunk: Time travellers for industrial evolution
(2011-Jun-17) [The Age]
http://www.theage.com.au/lifestyle/time-travellers-20110617-1g6wl.html