Science and Mathematics
- Menstruation, a phase of the menstrual cycle in which the uterine lining is shed
- Orbital period, a concept in astronomy
- Period (gene), a gene in Drosophila involved in regulating circadian rhythm
- Period (geology), a subdivision of geologic time
- Periodic function and periodical, a function that repeats its values in regular intervals
- The period of a periodic function
- Periodic group in group theory
- Periods (ring) — the ring of numbers which can be expressed as integrals of algebraic differential forms over algebraically defined domains
- Pisano period
- Periodic table, a chart which lists all currently known chemical elements
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- Period (periodic table), a horizontal row of the periodic table
- Periodic acid, an oxoacid of iodine
- Period (physics), the time taken for one full oscillation; it is the reciprocal of frequency
- Period of orbit
- Period of time
Read more about this topic: Period
Famous quotes containing the words science and, science and/or mathematics:
“Science and technology multiply around us. To an increasing extent they dictate the languages in which we speak and think. Either we use those languages, or we remain mute.”
—J.G. (James Graham)
“In the new science of the twenty-first century, not physical force but spiritual force will lead the way. Mental and spiritual gifts will be more in demand than gifts of a physical nature. Extrasensory perception will take precedence over sensory perception. And in this sphere woman will again predominate.”
—Elizabeth Gould Davis (b. 1910)
“In mathematics he was greater
Than Tycho Brahe, or Erra Pater:
For he, by geometric scale,
Could take the size of pots of ale;
Resolve, by sines and tangents straight,
If bread and butter wanted weight;
And wisely tell what hour o’ th’ day
The clock doth strike, by algebra.”
—Samuel Butler (1612–1680)