Measures and Units

A Dictionary of Weights, Measures, and Units, edited by Donald Fenna, Oxford University Press
This resource provides clear definitions of all the units, prefixes and styles of the Système International (SI), as well as traditional and industry-specific units. The terms are taken from a broad range of subjects including astronomy, electromagnetics, geology, photography, mathematics, meteorology, physics, and temperature.
On this page: P to Planck length.
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Title Index: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

P:  A 1  2  Next > 
P (mechanics)
p.r.n. (abbreviation)
p.s.i. (pressure)
Pa (mechanics)
parsec (astronomy)
pascal (unit of pressure)
pascal·second (rheology)
pastille dose (radiation physics)
pebi- (informatics)
Péclet number (chemical engineering)
perche (region, former county, France)
period (in geologic time)
permicron (physics)
permittivity (physics)
peta- (prefix)
pH (chemistry)
ph (photics)
pi (mathematics)
pico- (prefix)
pièze (mechanics)
pipe (mechanical device)
pitch (in music)
pK (chemistry)
Planck constant (radiation physics)