What is period?

Answer 1

hmmm? shouldnt u try to find out ur self b4 asking here?...hmm but then again..i think i should tell u since u asked..

science:
Periodization is the attempt to categorize or divide time into discrete named blocks. Most sciences that study the history of their respective objects of study have their own periodization. Commonly known periods for example from geology are the Cretaceous and Jurassic period. This article uses periods from European human history to elaborate the problem of periodization.

biology:
The menstrual cycle is a recurring cycle of physiological changes in the females of some animal species that is associated with reproductive fertility.

art:
In the performing arts, a period piece is a work set in a particular era

chemistry:
a)Periodic acid is HIO4 or H5IO6. The name is not derived from "period", but from "iodine": per-iodic acid (compare iodic acid, perchloric acid).

b)The periodic table of the chemical elements is a tabular method of displaying the chemical elements, first devised in 1869 by the Russian chemist Dmitri Mendeleev. Mendeleev intended the table to illustrate recurring ("periodic") trends in the properties of the elements. The layout of the table has been refined and extended over time, as many new elements have been discovered since Mendeleev's time, and new theoretical models have been developed to explain chemical behavior. Various layouts are possible to emphasize different aspects of behavior; the most common forms, however, are still quite similar to Mendeleev's original design.

geology:
geologic period is a subdivision of geologic time that divides an era into smaller timeframes. The equivalent term used to demarcate rock layers and the fossil record is the system; thus the rocks of the Devonian System were laid down during the Devonian Period. While paleontologists often refer to faunal stages rather than geologic periods, they are often used in popular presentations of paleontology.

math:
In mathematics, a periodic function is a function that repeats its values after some definite period has been added to its independent variable. Everyday examples are seen when the variable is time; for instance the hands of a clock or the phases of the moon show periodic behaviour. Periodic motion is motion in which the position(s) of the system are expressible as periodic functions, all with the same period.

well only this much i can find for u...well u see i am taking ur question in to broader sense..so i think might as well give all the answer i know




this helped u?

Answer 2

Menstruation - having periods - is part of the female reproductive cycle that starts when girls become sexually mature at the time of puberty.

During a menstrual period, a woman bleeds from her uterus (womb) via the vagina. This lasts anything from three to seven days. Each period commences approximately every 28 days if the woman does not become pregnant during a given cycle.

Answer 3

Yellow on your knickers is subjective. If that is brownish yellow then certain yet yellow discharge sounds infectious. once you era is over make constructive you dont see this nastiness on your drawers.

Answer 4

http://en.wikipedia.org/wiki/Period

Answer 5

a full pause, as is made at the end of a complete sentence; full stop.

hope this helps...lol...!

Answer 6

Read your biology book.

Answer 7

ask your mother