Sciences
- Particulate matter, particulates—fine dust and soot—suspended in the air
- PM10, particulates, smaller than 10 μm, that can cause health problems
- PM3 (chemistry), or Parameterized Model number 3 - a modelling method in computational chemistry
- Permanent magnet, an object which stays magnetised without external effort or mason.
- Perpetual motion, refers to movement that goes on forever
- Petameter, a length unit (1015 m) (Pm)
- Phase modulation, in electrical engineering
- PM tube, Photomultiplier tube.
- Picometre, a length unit (10−12 m) (pm)
- Plasma membrane, is a selectively permeable lipid bilayer found in all cells
- Powdery mildew, a fungal disease that affects a wide range of plants
- Powder metallurgy, a method of fabricating metals.
- Premolar tooth, dental nomenclature
- Promethium, chemical element number 61 (Pm)
- Polymyositis, disease
- Post mortem, a medical examination carried out after death
- Principia Mathematica, a three-volume work on the foundations of mathematics
- Polarization-maintaining optical fiber
- Participatory medicine, a new model of medicine
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Famous quotes containing the word sciences:
“All cultural change reduces itself to a difference of categories. All revolutions, whether in the sciences or world history, occur merely because spirit has changed its categories in order to understand and examine what belongs to it, in order to possess and grasp itself in a truer, deeper, more intimate and unified manner.”
—Georg Wilhelm Friedrich Hegel (1770–1831)
“These modern ingenious sciences and arts do not affect me as those more venerable arts of hunting and fishing, and even of husbandry in its primitive and simple form; as ancient and honorable trades as the sun and moon and winds pursue, coeval with the faculties of man, and invented when these were invented. We do not know their John Gutenberg, or Richard Arkwright, though the poets would fain make them to have been gradually learned and taught.”
—Henry David Thoreau (1817–1862)
“The best thing about the sciences is their philosophical ingredient, like life for an organic body. If one dephilosophizes the sciences, what remains left? Earth, air, and water.”
—Novalis [Friedrich Von Hardenberg] (1772–1801)