As often happens in science, radioactivity came close to being discovered nearly four decades earlier when, in 1857, Abel Niepce de Saint-Victor, who was investigating photography under Michel Eugène Chevreul, observed that uranium salts emitted radiation able to darken photographic emulsions.

In the end Chevreul discovered that once a person holding divining rods / magic pendulum became aware of the brain's reaction, the movements stopped and could not be willingly reproduced.

* Cholesterol is discovered by French chemist Michel E. Chevreul, who analyzes it in human gall stones, but its causal relationship with atherosclerosis remains unknown.

Cetyl alcohol was discovered in 1817 by the French chemist Michel Chevreul when he heated spermaceti, a waxy substance obtained from sperm whale oil, with caustic potash ( potassium hydroxide ).

Like Chevreul, he stated that if two colors are placed next to each other, from a distance they look like a third distinctive color.

These ideas and many personal color observations were summarized in two founding documents in color theory: the Theory of Colors ( 1810 ) by the German poet and government minister Johann Wolfgang von Goethe, and The Law of Simultaneous Color Contrast ( 1839 ) by the French industrial chemist Michel-Eugène Chevreul.

Simultaneous contrast identified by Michel Eugène Chevreul refers to the manner in which the colors of two different objects affect each other.

In his works, Chevreul advised artists to think and paint not just the color of the central object, but to add colors and make appropriate adjustments to achieve a harmony among colors.

Chevreul is also linked to what is sometimes called Chevreul's illusion, the bright edges that seem to exist between adjacent strips of identical colors having different intensities.

Orphism or Orphic Cubism, a term coined by the French poet Guillaume Apollinaire in 1912, was an offshoot of Cubism that focused on pure abstraction and bright colors, influenced by Fauvism, theoretical writings of Paul Signac, Charles Henry and the dye chemist Eugène Chevreul.

Most famous for discovering margarine, Chevreul delved in dye chemistry as well as the aesthetics of simultaneous contrast of colors.

During the 19th century, scientist-writers such as Michel Eugène Chevreul, Ogden Rood and David Sutter wrote treatises on color, optical effects and perception.

Chevreul was perhaps the most important influence on artists at the time ; his great contribution was producing a color wheel of primary and intermediary hues.

Chevreul also realized that the ' halo ' that one sees after looking at a color is the opposing, or complementary, color.

The development of color theory by Michel Eugène Chevreul and others by the late 19th century played a pivotal role in shaping the neo-impressionist style.

Around the same time, cubist works were being shown in Paris and Robert had been studying the color theories of Michel Eugène Chevreul ; they called their experiments with color in art and design simultanéisme.

He began studying science with his father when he was 13-year-old, and later studied Chemistry at the École Polytechnique under the chemists Louis Nicolas Vauquelin and Michel Eugène Chevreul.

Around 1816 Michel Chevreul started a study of soaps made from various fats and alkalis.

Chevreul received letters of commendation from many heads of state and monarchs, including Queen Victoria.

Margarine originated with the discovery by Michel Eugène Chevreul in 1813 of margaric acid ( itself named after the pearly deposits of the fatty acid from Greek or μάργαρον ( margaritēs / márgaron ), meaning pearl-oyster or pearl, or ( margarís ), meaning palm-tree, hence the relevance to palmitic acid ).

Chevreul claimed that divinatory pendulae were made to swing by unconscious muscle movements, brought about by appropriate concentration alone.

Chevreul was a French chemist who restored old tapestries.

Chevreul based his theories on Newton's thoughts on the mixing of light, but Rood based his writings on the work of Helmholtz.

* 1901: Transfer street Chevreul on land donated by the city of Lyon in the person of its mayor, Edouard Herriot.

He is credited with having published ( in 1886 ) the first photo-interview ( of famous chemist Michel Eugène Chevreul, then a centenarian ), and also took erotic photographs.

The style ’ s emergence in the 19th century can be traced to the influence of Michel Eugène Chevreul, a French chemist responsible for developing the colour wheel of primary and intermediary hues.

Chevreul worked as the director of the dye works at Les Gobelins tapestry works in Paris, where he noticed that the perceived colour of a particular thread was influenced by its surrounding threads, a phenomenon he called “ simultaneous contrast .” Chevreul ’ s work was a continuation of theories of colour elaborated by Leonardo da Vinci and Goethe ; in turn, his work influenced painters including Eugène Delacroix and Georges-Pierre Seurat.

The principles articulated by Chevreul also apply to contemporary television and computer displays, which use tiny dots of red, green and blue ( RGB ) light to render colour, with each composite being called a pixel.

Michel Eugène Chevreul ( 31 August 1786 – 9 April 1889 ) was a French chemist whose work with fatty acids led to early applications in the fields of art and science.

Chevreul was born in the town of Angers, France, where his father was a physician.

At about the age of seventeen Chevreul went to Paris and entered L. N. Vauquelin's chemical laboratory, afterwards becoming his assistant at the Muséum national d ' histoire naturelle ( National Museum of Natural History ) in the Jardin des Plantes.

In 1826 Chevreul became a member of the Academy of Sciences, and in the same year was elected a foreign member of the Royal Society of London, whose Copley Medal he was awarded in 1857.

Chevreul succeeded his master, Vauquelin, as professor of organic chemistry at the National Museum of Natural History in 1830, and thirty-three years later assumed its directorship also ; this he relinquished in 1879, though he still retained his professorship.

When he showed this model as his `` solution '' as to how the Howe sewing machine operated, he was told he was `` wrong '', and discovered to his amazement that the Howe Machine, which was unknown to him in detail, used two threads while the one that he had perfected used only one.

Early in her life she had discovered that where there were men, there was money, and with the two came luxury and liquor.

The expedition that had discovered Ozagen had succeeded in correlating two thousand Siddo words with an equal number of American words.

In 2008, it was discovered that the inactivation of only two genes in one species of annual plant leads to the conversion into a perennial plant.

One of the earliest group automorphisms ( automorphism of a group, not simply a group of automorphisms of points ) was given by the Irish mathematician William Rowan Hamilton in 1856, in his Icosian Calculus, where he discovered an order two automorphism, writing:

In August 2012, two mites preserved in amber were determined to be the oldest animals ever to have been found in the substance ; the mites are 230 million years old and were discovered in north-eastern Italy.

* Take two: Aspirin, New uses and new dangers are still being discovered as aspirin enters its 2nd century.

We possess two declamations under his name: On Sophists, directed against Isocrates and setting forth the superiority of extempore over written speeches ( a more recently discovered fragment of another speech against Isocrates is probably of later date ); Odysseus ( perhaps spurious ) in which Odysseus accuses Palamedes of treachery during the siege of Troy

Also during Summer of 2009 archaeologists discovered in Actium the ruins of the Temple of Apollo ( in Greek Ναός του Ακτίου Απόλλωνος ) and found two statues ' heads, one of Apollo, one of Artemis ( Diana ).

Luigi Galvani discovered something he dubbed " animal electricity " when two different metals were connected in series with the frog's leg and to one another.

In this way he discovered the electrochemical series, and the law that the electromotive force ( emf ) of a galvanic cell, consisting of a pair of metal electrodes separated by electrolyte, is the difference between their two electrode potentials ( thus, two identical electrodes and a common electrolyte give zero net emf ).

Letter 33 contains the statement of Abba Mari that two letters which he desired to insert could not be discovered by him.

In the nearly two centuries that have followed, well over a thousand naturally occurring acetylenes have been discovered and reported.

Another group of animals discovered subsequently, whose filtering mechanism looked similar, was also included in " Bryozoa " until 1869, when the two groups were noted to be very different internally.

Bromine was discovered independently by two chemists, Carl Jacob Löwig and Antoine Balard, in 1825 and 1826, respectively.

She also was a great-grandniece of Giovanni Schiaparelli, an Italian astronomer who believed he had discovered the supposed canals of Mars, and a great-grandniece of art expert Bernard Berenson ( 1865 – 1959 ) and his sister Senda Berenson ( 1868 – 1954 ), an athlete and educator who was one of the first two women elected to the Basketball Hall of Fame.

They discovered two SF activities, one with a 1-2 ms half-life and one with a 5 s activity.

The isotope effect was reported by two groups on the 24th of March 1950, who discovered it independently working with different mercury isotopes, although a few days before publication they learned of each other's results at the ONR conference in Atlanta, Georgia.

Carbon nanobuds are a newly created material combining two previously discovered allotropes of carbon: carbon nanotubes and fullerenes.

The fiction was not discovered until two years later.

The Summary Report of the HMS Challenger expedition lists radiolaria from the two dredged samples taken when the Challenger Deep was first discovered.

To the east of the Chapel of Saint Helena, the excavators discovered a void containing a 2nd century drawing of a Roman ship, two low walls which supported the platform of Hadrian's 2nd century temple, and a higher 4th century wall built to support Constantine's basilica.

As first discovered by James D. Watson and Francis Crick, the structure of DNA of all species comprises two helical chains each coiled round the same axis, and each with a pitch of 34 ångströms ( 3. 4 nanometres ) and a radius of 10 ångströms ( 1. 0 nanometres ).

The four pillars set up by Cão on his two voyages have all been discovered in situ, and the inscriptions on two of them from Cape Santa Maria and Cape Cross, dated 1482 and 1485 respectively, are still to be read and have been printed ; the Cape Cross padrão is now at Kiel ( replaced on the spot by a granite facsimile ); those from the Congo estuary and the more southerly Monte Negro are in the Museum of the Lisbon Geographical Society.