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360 BCE
Democritus
Democritus was born in Abdera, Thrace,around 460 BC, although, some thought it was 490 BC. His exact contributions are difficult to disentangle from those of his mentor Leucippus, as they are often mentioned together in texts. -
Antoine Lavoisier
It is generally accepted that Lavoisier's great accomplishments in chemistry largely stem from his changing the science from a qualitative to a quantitative one. He is widely considered in popular literature as the father of modern chemistry. -
joseph louis proust
joseph L. Proust was born on September 26, 1754 in Angers, France. His father served as an apothecary in Angers. Joseph studied chemistry in his father’s shop and later came to Paris where he gained the appointment of apothecary in chief to the Salpetriere [1]. He also taught chemistry with Pilâtre de Rozier, a famous aeronaut. -
John Dalton
John Dalton was born into a Quaker family in Eaglesfield, near Cockermouth, in the county of Cumberland, England.[1] His father was a weaver. He received his early education from his father and from Quaker John Fletcher, who ran a private school in the nearby village of Pardshaw Hall. -
michael faraday
Although Faraday received little formal education, he was one of the most influential scientists in history. It was by his research on the magnetic field around a conductor carrying a direct current that Faraday established the basis for the concept of the electromagnetic field in physics. -
Henri Becquerel
Becquerel was born in Paris into a rich family which produced four generations of scientists: Becquerel's grandfather (Antoine César Becquerel), father (Alexandre-Edmond Becquerel), and son (Jean Becquerel).[citation needed] He studied engineering at the École Polytechnique and the École des Ponts et Chaussées.[citation needed] In 1890 he married Louise Désirée Lorieux.[citation needed] -
J.J. Thomson
In 1897, Thomson showed that cathode rays were composed of previously unknown negatively charged particles, which he calculated must have bodies much smaller than atoms and a very large value for their charge-to-mass ratio.Thomson is also credited with finding the first evidence for isotopes of a stable element in 1913, as part of his exploration into the composition of canal rays . -
Robert Millikan
1914 Millikan took up with similar skill the experimental verification of the equation introduced by Albert Einstein in 1905 to describe the photoelectric effect. He used this same research to obtain an accurate value of Planck’s constant. -
Ernest Rutherford
rnest Rutherford was born on August 30, 1871, in Nelson, New Zealand, the fourth child and second son in a family of seven sons and five daughters. His father James Rutherford, a Scottish wheelwright, immigrated to New Zealand with Ernest's grandfather and the whole family in 1842. -
Albert Einstein
Near the beginning of his career, Einstein thought that Newtonian mechanics was no longer enough to reconcile the laws of classical mechanics with the laws of the electromagnetic field. This led him to develop his special theory of relativity during his time at the Swiss Patent Office in Bern (1902–1909), Switzerland. -
Neils Bohr
Bohr developed the Bohr model of the atom, in which he proposed that energy levels of electrons are discrete and that the electrons revolve in stable orbits around the atomic nucleus but can jump from one energy level (or orbit) to another. Although the Bohr model has been supplanted by other models, its underlying principles remain valid. -
James Chadwick
James Chadwick was born in Cheshire, England, on 20th October, 1891, the son of John Joseph Chadwick and Anne Mary Knowles. He attended Manchester High School prior to entering Manchester University in 1908; he graduated from the Honours School of Physics in 1911 and spent the next two years under Professor (later Lord) Rutherford in the Physical Laboratory in Manchester, where he worked on various radioactivity problems, gaining his M.Sc. degree in 1913. -
Marie and Pierre Currie
Marie and Pierre Curie's pioneering research was again brought to mind when on April 20 1995, their bodies were taken from their place of burial at Sceaux, just outside Paris, and in a solemn ceremony were laid to rest under the mighty dome of the Panthéon.At the end of the 19th century, a number of discoveries were made in physics which paved the way for the breakthrough of modern physics and led to the revolutionary technical development that is continually changing our daily lives.