QPM
From Infogalactic: the planetary knowledge core
QPM may refer to:
- Queen's Police Medal, a medal awarded to police officers in the United Kingdom and Commonwealth for gallantry or distinguished service
- Quasi-phase-matching, a technique in nonlinear optics which allows a positive net flow of energy from the pump frequency to the signal and idler frequencies by creating a periodic structure in the nonlinear medium
- Quantitative phase contrast microscopy, a collective name for a group of microscopy methods which quantifies the phase shift that occurs when light waves passes through a more optically dense object.
- Quality Protein Maize, contains nearly twice as much usable protein as other maize (or corn) grown in the tropics and yields 10% more grain than traditional varieties of maize
- Questions of Procedure for Ministers, the confidential predecessor of the Ministerial_Code_(United_Kingdom)
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