Who is Julius Lothar Meyer?
Julius Lothar Meyer is celebrated in Google Doodles today on the world’s 190th birthday. A German chemist, professor, and author was one of two scientists who independently discovered the periodic law of chemical elements and pioneered the oldest periodic tables.
Mayer was born into a medical family in Farrell, modern Germany on August 19, 1830. Mayer first studied medicine but then concentrated on physiological chemistry, earning his doctorate in 1858 and becoming a science professor for one year. later.
In 1864, Mayer published the textbook Die modernen Theorien der Chemie, which included a system for organizing 28 elements on the basis of atomic weight. An introduction to the modern periodic table.
However, at the same time, the Russian chemist Mendeleyev was independently developing similar ideas. Meyer and Mendeleev both studied at Heidelberg University under the guidance of Bunsen and Gustav Kirchhoff, so it’s possible they know each other. However, they were not abreast of each other’s independent studies of the elements and eventual development of the periodic table.
As the students return to school, Google this morning replaced the logo on its homepage with a doodle honoring Julius Lothar Meyer, one of the pioneering scientists who discovered that chemical elements can be organized in a periodic table.
Students of science and history may recall that the discovery of the periodic table of elements that we know today belonged to Russian scientist Mendeleyev. However, in the 19th century, many chemists were studying and experimenting with the proper method of assembling and presenting elements.
One of these scientists was Julius Lothar Meyer, born in Farrell, Germany that day in 1830. Although the Meyer family traditionally majored in medical sciences, he changed his life by deciding to study and study. teach chemistry. In his first book – “Die modernen Theorien der Chemie” published in 1864 – Meyers published a first periodic table in 1864 which had 28 elements.
Meyer continued to develop his table, and was able to publish a table with almost twice the number of elements, in 1870. However, by that time Mayer’s work had been suppressed in 1869 by the upper table. of Mendeleev’s 63 chemical elements.
Regardless of who published their results first, Meyer and Mendeleev were awarded the Davy Medal from the British Royal Society in 1882, in recognition of their contributions to the creation of the periodic table of elements that we still use today.
Today’s Google Doodle consists of a drawing on the chalkboard of Julius Lothar Meyer, standing with an assortment of cups and flasks depicting “Google”. And behind is its famous diagram which shows the relations between certain elements, in particular according to their atomic weight and their size.
On the official Google Doodle blog, Google this morning shared some tech and alternative doodle designs, including more detailed sketches by Julius Lothar Meyer himself.
Meyer designed a complete periodic table in 1868, but before its publication, Mendeleev published his own research paper which grouped all the known elements into a single table. Mendelev’s discovery predicted the properties of unknown elements, and his studies were honored by the scientific community, which named element 101 Mendelevium after him, years after his death.
However, Meyer’s later article in 1870 was a pioneer in the entire neighborhood – the graphical presentation of the relationship between atomic size and atomic weight provided strong evidence for the periodic law describing periodic patterns between elements.
In 1895, a few months after Mayer’s death, Scientific American published an article by chemist MM Pattison Muir discussing the controversy between the independent discoveries of Mayer and Mendeleev: the generalization that has been made in chemistry since Dalton’s work must , without a doubt, be attributed to this chemist. The great Mendeleev […]
“Nonetheless, an examination of the controversy between Mendeleev and Mayer shows, I believe, that Mayer arrived at the basic concept of the periodic law independently of Mendeleev.”
The Meyer Diagram, or Lothar Meyer Ranking, can be seen behind the world in Google Doodle today. Google says, “Happy Birthday Julius Lothar Meyer, and thank you for challenging the elements of scientific knowledge!”
reported by newsweek