∆ (when the cities burn)

∆_battle_still_web
∆ (when the cities burn)
HD video. 6.12mins

“Our civilization is flinging itself to pieces. Stand back from the centrifuge.”
[Ray Bradbury, Fahrenheit 451]

[note: in this case, ∆ (opt + j) is defined as it is in chemistry: ∆ = the addition of heat in a reaction and also references the general definition in math & science: ∆ = the change of any changeable quantity]