fluo - freq
- Fokker-Planck collision integral
- Fokker-Planck equation
- fold
- fold-type catastrophe
- folding strength
- folding test
- Foldy-Wouthuysen transform
- foliation
- folium of Descartes
- follow
- follow the directions
- follow the instructions
- follower
- following
- following force
- following sea
- following sunspot
- Fong-Newton theory
- food sterilization
- foot candle
- foot lambert
- footnote
- Forbes effect
- forbidden
- forbidden band
- forbidden beta transition
- forbidden cone
- forbidden decay
- forbidden gap
- forbidden line
- forbidden magnon
- forbidden magnon scattering
- forbidden mode
- forbidden process
- forbidden radiation
- forbidden reaction
- forbidden region
- forbidden resonance
- forbidden state
- forbidden transition