A double pendulum is a pendulum with another pendulum attached to its end, and is a simple physical system[?] that exhibits rich dynamic behavior[?]. The double pendulum is governed by very complicated formulas that can be found here (http://scienceworld.wolfram.com/physics/DoublePendulum). The double pendulum relates to:
... and Albert Museum
Merseyside
Customs & Excise National Museum[?]
Historic Warships[?], Birkenhead
Lady Lever Art Gallery[?]
Liverpool Museum[?]
Merseyside ...