Scientist facts for kids

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Scientist
Occupation
Scientist looking through a microscope at the NIH National Cancer Institute
Names	Scientist
Profession
Activity sectors	Laboratory, field research
Description
Competencies	Scientific research
Education required	Science
Fields of employment	Academia, industry, government, nonprofit
Related jobs	Engineers

A scientist is a person who studies or has expertise in science. A scientist tries to understand how our world, or other things, work. Scientists make observations, ask questions and do extensive research work in finding the answers to many questions others may not know about.

Scientists may work in laboratories for governments, companies, schools and research institutes. Some scientists teach at universities and other places and train people to become scientists. Scientists often make experiments to find out more about reality, and sometimes may repeat experiments or use control groups. Scientists who are doing applied science try to use scientific knowledge to improve the world.

History
By specialization
- Natural science
- By employer
See also

History

"No one in the history of civilization has shaped our understanding of science and natural philosophy more than the great Greek philosopher and scientist Aristotle (384-322 BC), who exerted a profound and pervasive influence for more than two thousand years" —Gary B. Ferngren

Georgius Agricola gave chemistry its modern name. Generally referred to as the father of mineralogy and the founder of geology as a scientific discipline.

Johannes Kepler, one of the founders and fathers of modern astronomy, the scientific method, natural and modern science.

Alessandro Volta, the inventor of the electrical battery and discoverer of methane, is widely regarded as one of the greatest scientists in history.

Francesco Redi, referred to as the "father of modern parasitology", is the founder of experimental biology.

Mary Somerville, for whom the word "scientist" was coined.

Physicist Albert Einstein developed the general theory of relativity and made many substantial contributions to physics.

Physicist Enrico Fermi is credited with the creation of the world's first atomic bomb and nuclear reactor.

Atomic physicist Niels Bohr made fundamental contributions to understanding atomic structure and quantum theory.

Marine Biologist Rachel Carson launched the 20th century environmental movement.

The roles of "scientists", and their predecessors before the emergence of modern scientific disciplines, have evolved considerably over time. Scientists of different eras (and before them, natural philosophers, mathematicians, natural historians, natural theologians, engineers, and others who contributed to the development of science) have had widely different places in society, and the social norms, ethical values, and epistemic virtues associated with scientists—and expected of them—have changed over time as well. Accordingly, many different historical figures can be identified as early scientists, depending on which characteristics of modern science are taken to be essential.

Some historians point to the Scientific Revolution that began in 16th century as the period when science in a recognizably modern form developed. It was not until the 19th century that sufficient socioeconomic changes had occurred for scientists to emerge as a major profession.

Classical antiquity

Knowledge about nature in classical antiquity was pursued by many kinds of scholars. Greek contributions to science—including works of geometry and mathematical astronomy, early accounts of biological processes and catalogs of plants and animals, and theories of knowledge and learning—were produced by philosophers and physicians, as well as practitioners of various trades. These roles, and their associations with scientific knowledge, spread with the Roman Empire and, with the spread of Christianity, became closely linked to religious institutions in most European countries. Astrology and astronomy became an important area of knowledge, and the role of astronomer/astrologer developed with the support of political and religious patronage. By the time of the medieval university system, knowledge was divided into the trivium—philosophy, including natural philosophy—and the quadrivium—mathematics, including astronomy. Hence, the medieval analogs of scientists were often either philosophers or mathematicians. Knowledge of plants and animals was broadly the province of physicians.

Middle Ages

Science in medieval Islam generated some new modes of developing natural knowledge, although still within the bounds of existing social roles such as philosopher and mathematician. Many proto-scientists from the Islamic Golden Age are considered polymaths, in part because of the lack of anything corresponding to modern scientific disciplines. Many of these early polymaths were also religious priests and theologians: for example, Alhazen and al-Biruni were mutakallimiin; the physician Avicenna was a hafiz; the physician Ibn al-Nafis was a hafiz, muhaddith and ulema; the botanist Otto Brunfels was a theologian and historian of Protestantism; the astronomer and physician Nicolaus Copernicus was a priest. During the Italian Renaissance scientists like Leonardo da Vinci, Michelangelo, Galileo Galilei and Gerolamo Cardano have been considered the most recognizable polymaths.

Renaissance

During the Renaissance, Italians made substantial contributions in science. Leonardo da Vinci made significant discoveries in paleontology and anatomy. The Father of modern Science, Galileo Galilei, made key improvements on the thermometer and telescope which allowed him to observe and clearly describe the solar system. Descartes was not only a pioneer of analytic geometry but formulated a theory of mechanics and advanced ideas about the origins of animal movement and perception. Vision interested the physicists Young and Helmholtz, who also studied optics, hearing and music. Newton extended Descartes's mathematics by inventing calculus (at the same time as Leibniz). He provided a comprehensive formulation of classical mechanics and investigated light and optics. Fourier founded a new branch of mathematics — infinite, periodic series — studied heat flow and infrared radiation, and discovered the greenhouse effect. Girolamo Cardano, Blaise Pascal Pierre de Fermat, Von Neumann, Turing, Khinchin, Markov and Wiener, all mathematicians, made major contributions to science and probability theory, including the ideas behind computers, and some of the foundations of statistical mechanics and quantum mechanics. Many mathematically inclined scientists, including Galileo, were also musicians.

There are many compelling stories in medicine and biology, such as the development of ideas about the circulation of blood from Galen to Harvey. Some scholars and historians attributes Christianity to having contributed to the rise of the Scientific Revolution.

Age of Enlightenment

During the age of Enlightenment, Luigi Galvani, the pioneer of bioelectromagnetics, discovered animal electricity. He discovered that a charge applied to the spinal cord of a frog could generate muscular spasms throughout its body. Charges could make frog legs jump even if the legs were no longer attached to a frog. While cutting a frog leg, Galvani's steel scalpel touched a brass hook that was holding the leg in place. The leg twitched. Further experiments confirmed this effect, and Galvani was convinced that he was seeing the effects of what he called animal electricity, the life force within the muscles of the frog. At the University of Pavia, Galvani's colleague Alessandro Volta was able to reproduce the results, but was sceptical of Galvani's explanation.

Lazzaro Spallanzani is one of the most influential figures in experimental physiology and the natural sciences. His investigations have exerted a lasting influence on the medical sciences. He made important contributions to the experimental study of bodily functions and animal reproduction.

Francesco Redi discovered that microorganisms can cause disease.

19th century

Until the late 19th or early 20th century, scientists were still referred to as "natural philosophers" or "men of science".

English philosopher and historian of science William Whewell coined the term scientist in 1833, and it first appeared in print in Whewell's anonymous 1834 review of Mary Somerville's On the Connexion of the Physical Sciences published in the Quarterly Review. Whewell wrote of "an increasing proclivity of separation and dismemberment" in the sciences; while highly specific terms proliferated—chemist, mathematician, naturalist—the broad term "philosopher" was no longer satisfactory to group together those who pursued science, without the caveats of "natural" or "experimental" philosopher. Whewell compared these increasing divisions with Somerville's aim of "[rendering] a most important service to science" "by showing how detached branches have, in the history of science, united by the discovery of general principles." Whewell reported in his review that members of the British Association for the Advancement of Science had been complaining at recent meetings about the lack of a good term for "students of the knowledge of the material world collectively." Alluding to himself, he noted that "some ingenious gentleman proposed that, by analogy with artist, they might form [the word] scientist, and added that there could be no scruple in making free with this term since we already have such words as economist, and atheist—but this was not generally palatable".

Whewell proposed the word again more seriously (and not anonymously) in his 1840 The Philosophy of the Inductive Sciences:

The terminations ize (rather than ise), ism, and ist, are applied to words of all origins: thus we have to pulverize, to colonize, Witticism, Heathenism, Journalist, Tobacconist. Hence we may make such words when they are wanted. As we cannot use physician for a cultivator of physics, I have called him a Physicist. We need very much a name to describe a cultivator of science in general. I should incline to call him a Scientist. Thus we might say, that as an Artist is a Musician, Painter, or Poet, a Scientist is a Mathematician, Physicist, or Naturalist.

He also proposed the term physicist at the same time, as a counterpart to the French word physicien. Neither term gained wide acceptance until decades later; scientist became a common term in the late 19th century in the United States and around the turn of the 20th century in Great Britain. By the twentieth century, the modern notion of science as a special brand of information about the world, practiced by a distinct group and pursued through a unique method, was essentially in place.

20th century

Marie Curie became the first woman to win the Nobel Prize and the first person to win it twice. Her efforts led to the development of nuclear energy and Radiotherapy for the treatment of cancer. In 1922, she was appointed a member of the International Commission on Intellectual Co-operation by the Council of the League of Nations. She campaigned for scientist's right to patent their discoveries and inventions. She also campaigned for free access to international scientific literature and for internationally recognized scientific symbols.

By specialization

Natural science

Physical science

Chemist Agrochemist Analytical chemist Astrochemist Atmospheric chemist Biophysical chemist Clinical chemist Computational chemist Electrochemist Femtochemist Geochemist Green chemist Chemical laboratory technician Inorganic chemist Medicinal chemist Nuclear chemist Organic chemist Organometallic chemist Pharmacologist Physical chemist Quantum chemist Solid-state chemist Stereochemist Structural chemist Supramolecular chemist Theoretical chemist Thermochemist	Earth scientist Astrogeologist Biogeochemist Climatologist Dendroarchaeologist Dendrologist Edaphologist Gemologist Geoarchaeologist Geobiologist Geographer Geologist Geomicrobiologist Geomorphologist Geophysicist Glaciologist Hydrogeologist Hydrologist Hydrometeorologist Limnologist Meteorologist Mineralogist Oceanographer Paleoclimatologist Paleoecologist Paleogeologist Paleoseismologist Palynologist Petrologist Sedimentologist Seismologist Speleologist Volcanologist	Physicist Acoustician Agrophysicist Astrophysicist Atmospheric physicist Atomic physicist Biological physicist Chemical physicist Computational physicist Cosmologist Condensed-matter physicist Engineering physicist Material physicist Molecular physicist Nuclear physicist Particle physicist Plasma physicist Polymer physicist Psychophysicist Quantum physicist Theoretical physicist	Astronomer Planetary science Space science Cosmology

Life science

Biologist Acarologist Aerobiologist Anatomist Arachnologist Bacteriologist Bioclimatologist Biogeographer Bioinformatician Biotechnologist Bioarcheologist Biochemist Biolinguist Biological anthropologist Biophysicist Biostatistician Botanist Cell biologist Chronobiologist Cognitive biologist Computational biologist	Conservation biologist Dendrochronologist Developmental biologist Ecologist Electrophysiologist Embryologist Endocrinologist Entomologist Epidemiologist Ethologist Evolutionary biologist Geneticist Hematologist Herbchronologist Herpetologist Histologist Human behavioral ecologist Human biologist	Ichnologist Ichthyologist Immunologist Integrative biologist Lepidopterist Mammalogist Marine biologist Medical biologist Microbiologist Molecular biologist Mycologist Neuroendocrinologist Neuroscientist Neuropsychologist Ornithologist Osteologist Paleoanthropologist Paleobotanist Paleobiologist Paleontologist Paleopathologist	Parasitologist Pathologist Physiologist Phytopathologist Population biologist Primatologist Quantum biologist Radiobiologist Sclerochronologist Sociobiologist Structural biologist Theoretical biologist Toxicologist Virologist Wildlife biologist Zoologist

Social science

Anthropologist Archaeologist Cultural anthropologist Linguistic anthropologist Communication scientist Criminologist Demographer Economist Management scientist Political economist Political scientist	Psychologist Behavioral geneticist Clinical psychologist Cognitive psychologist Developmental psychologist Educational psychologist Evolutionary psychologist Experimental psychologist Forensic psychologist Health psychologist Industrial and organizational psychologist Medical psychologist Social psychologist Sport psychologist Sociologist

Formal science

Computer scientist Computational scientist Data scientist Mathematician Algebraist Analyst Geometer Logician Probabilist Statistician Topologist Systems scientist

Applied

Agriculturist Applied physics Health physicist Medical physicist Biomedical scientist Engineering scientist Environmental scientist Food scientist Kinesiologist Nutritionist Operations research and management analysts Physician scientist

Interdisciplinary

Materials scientist Mathematical biologist Mathematical chemist Mathematical economist Mathematical physicist Mathematical sociologist

By employer

Academic
Independent scientist
Industrial/applied scientist
Citizen scientist
Government scientist