When it comes to Avengers: Doomsday, Marvel’s curtain of secrecy is as strong as ever. But, as always, we can usually count on the actors to let slip some intriguing new details. Ian McKellen is the ...

Magneto-optics is the use of magnetic fields to influence light propagation. This usually involves changing the physical properties of the medium through which the light is travelling. An example is ...

Some of the most sensitive methods of measuring magnetic fields use interactions of resonant light with atomic vapour. Recent developments in this vibrant field have led to improvements in sensitivity ...