Sciences / Engineering
- Proportional/Sum/Derivative, a version of the common discrete controller Proportional/Integral/Derivative
- Particle size distribution
- Phase sensitive detector
- Phase space density, number of particles (atoms) populating the same state. Important in Bose Einstein Condensation
- Position sensitive device and/or position sensitive detector, that can measure a position of a light spot in one or two-dimensions on a sensor surface.
- Positive-semi-definiteness as it relates to matrices
- Postsynaptic density, a specialization of the cytoskeleton at the synaptic junction
- Power spectral density, the power of a signal per some unit of measurement such as temporal or spatial frequency used in signal analysis
Read more about this topic: PSD
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