17th Century Timeline, 1600 Through 1699

17th Century Timeline, 1600 Through 1699 Major changes in the fields of philosophy and science took place  during the 17th century. Prior to the beginning of the 1600s, scientific study  and scientists in the field were not truly recognized. In fact, important figures and pioneers such as the 17th-century physicist  Isaac Newton were initially called natural philosophers because there was no such thing as the word scientist throughout most of the 17th century. But it was during this period that the emergence of newly-invented machines became part of the daily and economic lives of many people. While people studied and relied upon the more or less unproven principles of  medieval alchemy, it was during the 17th century that a transition to the science of chemistry took place. Another important development during this time was the evolution  from astrology to astronomy.   So by the end of the 17th century, the scientific revolution had taken hold and this new field of study had established itself as the leading society-shaping force that encompassed mathematical, mechanical, and  empirical bodies of knowledge. Notable scientists of this  era include the astronomer  Galileo Galilei, philosopher Renà © Descartes, inventor and mathematician  Blaise Pascal,  and  Isaac Newton. Here is a brief  historical list of the greatest technology, science, and invention hits of the 17th century. 1608 German-Dutch spectacle-maker Hans Lippershey invents the first refracting telescope. 1620 Dutch builder Cornelis Drebbel invents the earliest human-powered submarine. 1624 English mathematician William Oughtred invents the  slide rule. 1625 French physician Jean-Baptiste Denys invents a method for blood transfusion. 1629 Italian engineer and architect Giovanni Branca invents a steam turbine. 1636 English astronomer and mathematician W. Gascoigne invents the micrometer. 1642 French mathematician  Blaise Pascal invents the adding machine. 1643 Italian mathematician and physicist Evangelista Torricelli invents the barometer. 1650 Scientist and inventor  Otto von Guericke invents an air pump. 1656 Dutch mathematician and scientist  Christian Huygens  invents a pendulum clock. 1660 Cuckoo clocks were made in Furtwangen, Germany, in the Black Forest region. 1663 Mathematician and astronomer James Gregory invents the first reflecting telescope. 1668 Mathematician and physicist  Isaac Newton  invents a reflecting telescope. 1670 The first reference to a  candy cane  is made. French Benedictine monk Dom Pà ©rignon invents  Champagne. 1671 German mathematician and philosopher Gottfried Wilhelm Leibniz invents the calculating machine. 1674 Dutch Microbiologist  Anton Van Leeuwenhoek  was the first to see and describe bacteria with a microscope. 1675 Dutch mathematician, astronomer, and  physicist  Christian Huygens  patents the pocket watch. 1676 English architect and  natural philosopher  Robert Hooke  invents the universal joint. 1679 French physicist, mathematician, and inventor Denis Papin ​invents the pressure cooker. 1698 English inventor and engineer  Thomas Savery  invents a steam pump.

TRC essays

TRC essays Racial segregation and the supremacy of whites had been traditionally accepted in South Africa prior to 1948, but in the general election of that year, Daniel F. Malan officially included the policy of apartheid in the Afrikaner Nationalist party platform, bringing his party to power for the first time. Although most whites acquiesced in the policy, there was bitter and sometimes bloody strife over the degree and stringency of its implementation. 2 The purpose of apartheid was separation of the races: not only of whites from nonwhites, but also of nonwhites from each other, and, among the Africans (called Bantu in South Africa), of one group from another. In addition to the Africans, who constitute about 75% of the total population, those regarded as nonwhite include those people known in the country as Coloured (people of mixed black, Malayan, and white descent) and Asian (mainly of Indian ancestry) populations. 3 Initial emphasis was on restoring the separation of races within the urban areas. A large segment of the Asian and Coloured populations was forced to relocate out of so-called white areas. African townships that had been overtaken by (white) urban sprawl were demolished and their occupants removed to new townships well beyond city limits. Between the passage of the Group Areas Acts of 1950 and 1986, about 1.5 million Africans were forcibly removed from cities to rural reservations. 4 South Africa gains independence from Great Britain after the passage of the Statute of Westminster by the British Parliament in December 1931 and its acceptance by South Africa in June 1934. From the formation of the independent country, the white minority controls the government and moves to limit the powers of nonwhites and create special designated areas, or homelands, for them to live. The United Nations adopts a resolution condemning the South African government's treatment of its Indian minority and asks both South Africa and Ind...

Does the salary of human resource managers depend on the sex Research Paper

Does the salary of human resource managers depend on the sex - Research Paper Example This test shall assume equal variances in the hypothesis testing whereby 95% confidence level and a pooled standard deviation shall be considered. The critical value is a two-tail test which will form the rejection regions.This test shall assume equal variances in the hypothesis testing whereby 95% confidence level and a pooled standard deviation shall be considered. The critical value is a two-tail test which will form the rejection regions.Research QuestionAre salaries for female human resource directors equal to the salaries for male human resource directors?  HypothesisThe mean salary for female human resource directors is equal to mean salary for male human resource directors.H0: Mean salary for female human resource directors is equal to the mean salary for male human resource directorsVs.  Ha: Mean salary for female human resource directors is not equal to the mean salary for male human resource directorsThus, at 95% confidence level, we can find the critical region using ÃŽ ± = 0.05. Since the absolute calculated t value is less than the critical, we fail to reject the null hypothesis of the test. Thus, we can conclude that at 5% level of significance, the mean salary for female human resource directors is equal to the mean salary for male human resource directors. Moreover, as much as the means for the two independent samples are literary, not equal, the t-test has statistically proven that female human resource managers’ salaries are not different from that of male human resource managers.