<Dd> <Table> <Tr> <Td> ∇ 2 B = μ 0 ε 0 ∂ 2 B ∂ t 2 . (\ displaystyle \ nabla ^ (2) \ mathbf (B) = \ mu _ (0) \ epsilon _ (0) (\ frac (\ partial ^ (2) \ mathbf (B)) (\ partial t ^ (2))).) </Td> </Tr> </Table> </Dd> <Table> <Tr> <Td> ∇ 2 B = μ 0 ε 0 ∂ 2 B ∂ t 2 . (\ displaystyle \ nabla ^ (2) \ mathbf (B) = \ mu _ (0) \ epsilon _ (0) (\ frac (\ partial ^ (2) \ mathbf (B)) (\ partial t ^ (2))).) </Td> </Tr> </Table> <Tr> <Td> ∇ 2 B = μ 0 ε 0 ∂ 2 B ∂ t 2 . (\ displaystyle \ nabla ^ (2) \ mathbf (B) = \ mu _ (0) \ epsilon _ (0) (\ frac (\ partial ^ (2) \ mathbf (B)) (\ partial t ^ (2))).) </Td> </Tr> <P> These differential equations are equivalent to the wave equation: </P>

What are the different applications of the em radiation