1 History of science and Ancient Civilizations The history of science covers the development of science from ancient times to the present. It encompasses all three major branches of .science: natural, social, and formal The earliest roots of science can be traced to Ancient Egypt and Mesopotamia in around 3000 to 1200 BCE. Their contributions to mathematics, astronomy, and medicine entered and shaped Greek natural philosophy of classical antiquity, whereby formal attempts were made to provide explanations of events in the physical world based on natural causes. After the fall of the Western Roman Empire, knowledge of Greek conceptions of the world deteriorated in Latin-speaking Western Europe during the early centuries (400 to 1000 CE) of the Middle Ages,but continued to thrive in the Greek-speaking Eastern Roman (or Byzantine) Empire. Aided by translations of Greek texts, the Hellenistic worldview was preserved and absorbed into the Arabicspeaking Muslim world during the Islamic Golden Age.[5] The recovery and assimilation of Greek works and Islamic inquiries into Western Europe from the 10th to 13th century revived the learning of natural .philosophy in the West Natural philosophy was transformed during the Scientific Revolution in 16th- to 17th-century Europe,as new ideas and discoveries departed from previous Greek conceptions and traditions. The New Science that emerged was more mechanistic in its worldview, more integrated with mathematics, and more reliable and open as its knowledge was based on a newly defined scientific method. More "revolutions" in subsequent centuries soon followed. The chemical revolution of the 18th century, for instance, introduced new quantitative methods and measurements for chemistry. In the 19th century, new perspectives regarding the conservation of energy, age of the Earth, and evolution came into focus. And in the 20th century, new discoveries in genetics and physics laid the foundations for new subdisciplines such as molecular biology and particle physics. Moreover, industrial and military concerns as well as the increasing complexity of new research endeavors soon ushered in the .era of "big science," particularly after the Second World War 2 Pre-17th century (Famous scientists) Hippocrates (460 –377 BC)the father of modern medicineAristotle (384 –322 BC)botany, zoology, physics, astronomy, chemistry, meteorology and geometryEuclid (325 –265 BC)father of modern geometry,His book ‘Elements‘ provided the basis of mathematics into the Twentieth Century.https://www.biographyonline.net/scientis Pre-17th century (Famous scientists) Archimedes (287 –212 BC)worked out Pi and developed the Archimedes screw for lifting up water from mines or wells.Leonardo DaVinci(1452 –1519) Renaissance man,made many discoveries and inventions but some of his contributions were not actually used.Nicholas Copernicus(1473- 1543)A Renaissance mathematician and astronomer who formulated a heliocentric view of the universe. His book On the Revolutions of the Celestial Spheres (1543) was one of the major moments of the Scientific Revolution.https://www.biographyonline.net/scientis th century (Famous scientists) Johannes Keplerséparer science,17 religion et philosophie Galileo Galileil'univers est écrit en langue mathématique René Descartes Je suppose que le corps n’est autre qu’une statue ou machine de terre […]. Dieu met au-dedans toutes les pièces requises pour faire qu’elle marche, qu'elle mange, qu’elle respire... » (Traité de L’homme,1633).https://www.herodote.net/XVIIe_siecle-synthese1895.php th century (Famous scientists) https://www.herodote.net/XVIIe_siecle-17 synthese-1895.phpJohn RayHistoria plantarum generalisBlaise PascalBinomial coefficientscientific method and methodical scientific inquiry in investigating scientific phenomena.https://www.biographyonline.net/scientis th century (Famous scientists) Antonie van Leeuwenhoekdiscovering18 single-celled organisms and also observing muscle fibres, blood flow and bacteria. Developed the microscope which helped his own discoveries.Sir Isaac Newtonstudies in mathematics, optics, physics, and astronomy. Principia Mathematica, published in 1687. Laid the foundations for classical mechanics, explaining the law of gravity and the Laws of Motion.https://www.biographyonline.net/scientis th century (Famous scientists) James Wattimproved the Newcomen18 steam engine creating an efficient steam engine, which was essential for 3 the industrial revolution.Antoine-Laurent de Lavoisierdiscovered hydrogen and Oxygen and showed the role of Oxygen in combustion.https://www.biographyonline.net/scientis th century (Famous scientists) Charles babbageinventor of the first19 mechanical computers.Michael Faradaythe fields of electromagnetic induction, diamagnetism, electrolysis and electro-chemistry. Discovered Carbon and Chlorine.https://www.biographyonline.net/scientis th century (Famous scientists) Charles Darwindeveloped the theory of19 evolution against a backdrop of disbelief and scepticism. Collected evidence over 20 years, and published conclusions in On the Origin of Species (1859).Louis Pasteurdeveloping cures for rabies, anthrax and other infectious diseases. Also enabled the process of pasteurisation to make milk safer to drink.https://www.biographyonline.net/scientis th century (Famous scientists) George Mendelthe founder of modern19 genetics for his discoveries about plant breeding and rules of heredity.Emil Fischer Won the Nobel Prize in Chemistry in 1902 for his research into the chemical composition of purines and sugars.https://www.biographyonline.net/scientis th century (Famous scientists) Alfred Nobelchemist, engineer,20 innovator, and armaments manufacturer. Nobel invented dynamite and held 350 other patents, including for a gas meter. Dmitri Mendeleev Formulated the Periodic Law and standardised the Periodic Table of Elements which is still used today. Mendeleev wrote Principles of Chemistry (1868–1870) a classic textbook for many decades.https://www.biographyonline.net/scientis th century (Famous scientists) Alfred Nobelchemist, engineer,20 innovator, and armaments manufacturer. Nobel invented dynamite and held 350 other patents, including for a gas meter. Dmitri Mendeleev Formulated the Periodic Law and standardised the Periodic Table of Elements which is still used today. Mendeleev wrote Principles of Chemistry (1868–1870) a classic textbook for many decades.https://www.biographyonline.net/scientis th century (Famous scientists) Sigmund Freud new science of20 psychoanalysis. Marie CurieDiscovered radiation and helped to apply it in the field of X-ray. She won Nobel Prize in both Chemistry and Physics.https://www.biographyonline.net/scientis 4 th century (Famous scientists) Albert Einsteinrevolutionised modern20 physics with his general theory of relativity. Won Nobel Prize in Physics (1921) for his discovery of the Photoelectric effect, which formed the basis of Quantum Theory.Max Plankcontributed to the development of Quantum Mechanics. Awarded the Nobel Prize in Physics in 1918.https://www.biographyonline.net/scientis th century (Famous scientists) Ernest Rutherford Nobel Prize in20 Chemistry for his work into radioactivi Definition of Science Science is defined as the observation, identification, description, experimental investigation, and theoretical explanation of natural phenomena.Webster's New Collegiate Dictionary gives the definition of science as "knowledge attained through study or practice "or " knowledge covering general truths of the operation of general laws, esp. as obtained and tested through scientific method [and] concerned with ". the physical world : Here are some other common definitions of science A branch of knowledge or study dealing with a body of facts or truths systematically arranged and showing the operation of general laws: for example, mathematical science Systemic knowledge of the physical or material world gained through observationsand experimentation Systematized knowledge in general Any of the particular branches of natural or physical sciences Knowledge of facts or principles; knowledge gained by systematic study Skill especially reflecting a precise application of facts or principle The word Science comes from Latin word "scientia" meaning "knowledge" and in the broadest sense it is any systematic knowledgebase or prescriptive practice capable of resulting in prediction. Science .can also be understood as a highly skilled technique or practice In more contemporary terms, science is a system of acquiring knowledge based on the scientific process or method in order to .organize a body of knowledge gained through research 5 Science is a continuing effort to discover and increase knowledge through research. Scientists make observations, record measureable data related to their observations, and analyze the information at hand to .construct theoretical explanations of the phenomenon involved The methods involved in scientific research include making a hypothesis and conducting experiments to test the hypothesis under controlled conditions. In this process, scientists publish their work so other scientists can repeat the experiment and further strengthen the reliability .of results Scientific fields are broadly divided into natural sciences (the study of natural phenomena) and social sciences (the study of human behavior and society). However, in both these divisions, knowledge is obtained through observation and must be capable of being tested for its validity .by other researchers working under similar conditions There are some disciplines like health science and engineering that are .grouped into interdisciplinary and applied sciences Most scientific investigations use some form of the scientific method. The scientific method tries to explain the events of nature in a reproducible way, eventually allowing researchers to formulate testable .predictions Scientists make observations of natural phenomenon and then through experimentation they try to simulate natural events under controlled conditions. Based on observations, a scientist may generate a model and then attempt to describe or depict the phenomenon in terms of .mathematical or logical representation Scientist will then gather the necessary empirical evidence to generate a .hypothesis to explain the phenomenon This hypothesis is used to form predictions which in turn will be tested by experiment or observations using the scientific method. Statistical analysis is commonly used to interpret results of experiments, and evaluations are made to decide whether a hypothesis should be accepted, rejected, or merely examined again with modifications. This inspires ongoing research and the overall accumulation of knowledge in .that particular field of science 6