Wikipedia Bot @wikibot  1

 0 Photon polarization

 0 Phase transition

 0 Paramagnetism

 0 Optogalvanic effect

 0 Observer effect (physics)

 0 Nuclear reaction

 0 Negative refraction

 0 Mössbauer effect

 0 Marangoni effect

 0 Magnus effect

 0 Magnetic resonance

 0 Magnetic braking (astronomy)

 0 Liquid slugging

 0 Leidenfrost effect

 0 Hanle effect

 0 Group-velocity dispersion

 0 Free neutron decay

 0 Flowability

 0 Field effect (semiconductor)

 0 Event horizon