Introduction[]
In One-Punch Man, Vaccine Man creates a large explosion visible from 20 kilometers away. I'll be calculating his attack potency. Credits to Ugarik for the pixel measurements.
Calculation[]
Panel Height = 208 px
Explosion Diameter = 107 px
Distance From The Explosion = 20000 m
Explosion Diameter = 2tan(70/2)*20000*107/208 = 14408.12 m
Explosion Radius = 14408.12/2 = 7204.06 m
W = R^3*((27136*P + 8649)^(1/2)/13568 - 93/13568)^2/1000
W is yield in kilotons of tnt, R is radius in meters, and P is pressure of the shockwave in bars, the standard overpressure is 20 psi or 1.37895 bars.
W = 7204.06^3*((27136*1.37895 + 8649)^(1/2)/13568 - 93/13568)^2/1000 = 30048.13 Kilotons of TNT
Final Tally[]
Vaccine Man's Attack Potency = 30.05 Megatons of TNT (City level)