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:
“Criticism is a study by which men grow important and formidable at very small expense. The power of invention has been conferred by nature upon few, and the labour of learning those sciences which may, by mere labour, be obtained, is too great to be willingly endured; but every man can exert some judgment as he has upon the works of others; and he whom nature has made weak, and idleness keeps ignorant, may yet support his vanity by the name of critic.”
—Samuel Johnson (1709–1784)
“The prime lesson the social sciences can learn from the natural sciences is just this: that it is necessary to press on to find the positive conditions under which desired events take place, and that these can be just as scientifically investigated as can instances of negative correlation. This problem is beyond relativity.”
—Ruth Benedict (1887–1948)
“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)