Poynting Energy Flux (|S|)
1361 W/m²
Energy Density (u)
4.54 µJ/m³
Surface Warming Power
1361 W
S = (E × B) / µ₀
Direction: +Z Propagation
Sunlight travels across 150 million km. Coupled orthogonal E and B vectors directly carry photon energy flux arriving at 1361 W/m² solar constant.