enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Quizlet - Wikipedia

    en.wikipedia.org/wiki/Quizlet

    [6] [7] [8] Quizlet's blog, written mostly by Andrew in the earlier days of the company, claims it had reached 50,000 registered users in 252 days online. [9] In the following two years, Quizlet reached its 1,000,000th registered user. [10] Until 2011, Quizlet shared staff and financial resources with the Collectors Weekly website. [11]

  3. Obstetrics - Wikipedia

    en.wikipedia.org/wiki/Obstetrics

    Obstetrics is the field of study concentrated on pregnancy, childbirth and the postpartum period. [1] As a medical specialty , obstetrics is combined with gynecology under the discipline known as obstetrics and gynecology (OB/GYN), which is a surgical field.

  4. Obstetrics and gynaecology - Wikipedia

    en.wikipedia.org/wiki/Obstetrics_and_gynaecology

    Obstetrics and gynaecology (also spelled as obstetrics and gynecology; abbreviated as Obs and Gynae, O&G, OB-GYN and OB/GYN [a]) is the medical specialty that encompasses the two subspecialties of obstetrics (covering pregnancy, childbirth, and the postpartum period) and gynaecology (covering the health of the female reproductive system ...

  5. Scientific Revolution - Wikipedia

    en.wikipedia.org/wiki/Scientific_Revolution

    4.3 Chemistry. 4.4 Physical. 4.4.1 Optics. 4 ... but the development of electrostatic machines did not begin in earnest until the 18th century when they became ...

  6. Outline of obstetrics - Wikipedia

    en.wikipedia.org/wiki/Outline_of_obstetrics

    4.5.3 Prenatal monitoring. 4.6 Childbirth. 4.6.1 Preparation for childbirth. ... obstetrics is the study of the reproductive process within the female body, ...

  7. Timeline of chemistry - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_chemistry

    An image from John Dalton's A New System of Chemical Philosophy, the first modern explanation of atomic theory.. This timeline of chemistry lists important works, discoveries, ideas, inventions, and experiments that significantly changed humanity's understanding of the modern science known as chemistry, defined as the scientific study of the composition of matter and of its interactions.

  8. History of chemistry - Wikipedia

    en.wikipedia.org/wiki/History_of_chemistry

    He also began work on the chemistry of glucose and related sugars. [101] In 1885, Eugen Goldstein named the cathode ray , later discovered to be composed of electrons, and the canal ray , later discovered to be positive hydrogen ions that had been stripped of their electrons in a cathode-ray tube ; these would later be named protons . [ 102 ]

  9. History of science - Wikipedia

    en.wikipedia.org/wiki/History_of_science

    The beginning of the 20th century brought the start of a revolution in physics. The long-held theories of Newton were shown not to be correct in all circumstances. Beginning in 1900, Max Planck , Albert Einstein , Niels Bohr and others developed quantum theories to explain various anomalous experimental results, by introducing discrete energy ...