Equation Icon  2 ⃗ 2 ⃗ 2 ⃗ 2 ⃗ ⃗ 2 ⃗ ⃗ 2 ⃗ ⃗ 2 ℰ = 1 + |∇y | + |E | + |B | + (E ⋅ ∇y ) + (B ⋅∇y ) + |E × B | = (1 + sin α ⃗E ⋅ ⃗∇y + cosα ⃗B ⋅ ⃗∇y )2 + |E⃗ − sin α ⃗∇y |2 + |⃗B − cosα ⃗∇y |2 2 2 + |cosα E⃗ ⋅ ⃗∇y − sin α ⃗B ⋅∇⃗y | + |E⃗ × ⃗B | (323 )