Gwen's shield withstands the explosion of the Null Void Projector (Episode 6)[]
Feat starts at 20:20
Grandpa Max states that the explosion will wipe out everything in 0.5 miles.
0.5 miles = 804.672 meters. This will be the radius.
Area of a circle = 2,034,171.90508 m^2

Height of the window - 29.02 px or 1.5 meters
Height of the castle - 329.22 px or 17.02 meters
Volume - Area * Height = 34621605.8244616 m^3
Energy of Pulverization (214.35 j/cc) = 7.42114120847334396e+15 Joules or 1.77 Megatons (Small City level)
Energy of Vaporization (25,700 j/cc) = 8.8977526968866312e+17 Joules or 212.66 Megatons (Mountain level)
Maybe I should assume 90% hollowness since there wasn't much in the area.
10% Volume - 3462160.58244616 m^3
Energy of Pulverization (214.35 j/cc) = 7.42114120847334396e+14 Joules or 177.37 Kilotons (Large Town level)
Energy of Vaporization (25,700 j/cc) = 8.8977526968866312e+16 Joules or 21.27 Megatons (City level)
Final Tally[]
Gwen's shield withstands the explosion of the Null Void Projector (Low-Low End) - 177.37 Kilotons (Large Town level)
Gwen's shield withstands the explosion of the Null Void Projector (High-Low End) - 1.77 Megatons (Small City level)
Gwen's shield withstands the explosion of the Null Void Projector (Low-High End) - 21.27 Megatons (City level)
Gwen's shield withstands the explosion of the Null Void Projector (High-High End) - 212.66 Megatons (Mountain level)