- photoelectron spectroscopy , PES
- photomultiplier tube , PMT
- photoemission electron microscope PEEM
- photoemissive effect
- photoemission spectroscopy , PES
- photoepilation
- Photographica
- photoinduced thermoluminescence , PITL
- photoionization detector , PID
- photokeratitis
- photoluminescence , PL
- photometeor
- photon drive
- photon propulsion
- photon diffusion
- photon flux
- photon flux density
- photon momentum
- photon-propelled rocket
- photon rocket
- photon scanning tunneling microscope , PSTM
- photon-propelled spaceship
- photon noise
- photonic engine
- photonic power plant
- photon annihilation
- photon number
- photon counter
- photonic
- photonically
- photonic force microscope , PFM
- photonic-force microscope , PFM
- photopolarimeter
- photopolarimetry
- photo reaction
- photosensitive epilepsy , PE
- photosynthetic oxygen evolution
