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This is a timeline of pure and applied mathematics history.It is divided here into three stages, corresponding to stages in the development of mathematical notation: a "rhetorical" stage in which calculations are described purely by words, a "syncopated" stage in which quantities and common algebraic operations are beginning to be represented by symbolic abbreviations, and finally a "symbolic ...
This is a timeline of Indian history, comprising important legal and territorial changes and political events in India and its predecessor states. To read about the background to these events, see History of India .
The year one is the first year in the Christian calendar (there is no year zero), which is the calendar presently used (in unison with the Gregorian calendar) almost everywhere in the world. Traditionally, this was held to be the year Jesus was born ; however, most modern scholars argue for an earlier or later date, the most agreed upon being ...
Geometric diagram for Newton's proof of Kepler's second law. 1602-1608 – Galileo Galilei experiments with pendulum motion and inclined planes; deduces his law of free fall; and discovers that projectiles travel along parabolic trajectories.
Giovanni Plana designed a Perpetual Calendar machine, which can calculate the precise calendar for over 4000 years, accounting for leap years and variation in day length. 1832 Russia: Semen Korsakov proposed the usage of punched cards [citation needed] for information storage and search.
Pregnancy tests are not accurate until 1–2 weeks after ovulation. Knowing an estimated date of ovulation can prevent a woman from getting false negative results due to testing too early. Also, 18 consecutive days of elevated temperatures means a woman is almost certainly pregnant. [61]
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