Examples of transverse waves are electromagnetic waves (e.g. light) and sound waves in solid bodies, whereby it should be borne in mind that in addition to transverse waves, there are also longitudinal sound waves present in solid bodies.
To describe the polarisation of electromagnetic waves, reference is usually made only to the electric field and the magnetic field, perpendicular to the electric field, is ignored. in circular polarised light, the spins of all photons point in the same direction. However, a single photon can possess linear polarisation, where two opposing circular polarised states are superimposed.