Archive for the ‘Chemistry’ Category
How the periodic table went from a sketch to an enduring masterpiece
150 years ago, Mendeleev perceived the relationships of the chemical elements
Every field of science has its favorite anniversary.
For physics, it’s Newton’s Principia of 1687, the book that introduced the laws of motion and gravity. Biology celebrates Darwin’s On the Origin of Species (1859) along with his birthday (1809). Astronomy fans commemorate 1543, when Copernicus placed the sun at the center of the solar system.
And for chemistry, no cause for celebration surpasses the origin of the periodic table of the elements, created 150 years ago this March by the Russian chemist Dmitrii Ivanovich Mendeleev…
Read more at https://www.sciencenews.org/article/periodic-table-history-chemical-elements-150-anniversary
Ultrafast Chemistry in Motion
This video describes how the Linac Coherent Light Source, an X-ray free-electron laser at SLAC National Accelerator Laboratory, provided the first direct measurements of how a ring-shaped gas molecule unravels in the millionths of a billionth of a second after it is split open by light. The measurements were compiled in sequence to form the basis for computer animations showing molecular motion. (SLAC National Accelerator Laboratory) ….
….. Read more at www6.slac.stanford.edu
First glimpse of a chemical bond being born
Scientists get first glimpse of a chemical bond being born
Read also: First glimpse of a chemical bond being born