Since pure thallium can be poisonous to the touch...does that make it death metal?
And send.
chemistry
British scientist Rosalind Franklin died #OTD in 1958.
Her most famous contribution to science came from her X-ray diffraction images of DNA, particularly Photo 51, which provided crucial evidence for the double helix structure of DNA. Her photo was shared without her knowledge with J. Watson & F. Crick, who used it as a basis for their model of DNA's structure. Their work overshadowed her contribution, & she was not fully recognized for her role until after her death.
Edited 1y ago
When an atom loses an electron from the valence shell, it has a positive charge and becomes a cat-ion
Belgian chemist, industrialist and philanthropist Ernest Solvay was born #OTD in 1838.
He is best known for his pioneering work in the chemical industry and for the establishment of the Solvay process for the manufacture of soda ash (sodium carbonate). In 1911, he began a series of important conferences in physics, known as the Solvay Conferences, whose participants included Max Planck, Ernest Rutherford, Maria Skłodowska-Curie, Henri Poincaré, and Albert Einstein.
French chemist Antoine Lavoisier died #OTD in 1794.
He is best known for his development of the law of conservation of mass, which states that mass is neither created nor destroyed in chemical reactions. This principle helped to debunk the phlogiston theory, which was a prevailing theory at the time that suggested substances released a material called "phlogiston" when they burned. He also made significant contributions in understanding respiration as a form of combustion.
Toxic Gaslighting: How 3M Executives Convinced a Scientist the Forever Chemicals She Found in Human Blood Were Safe
==
Decades ago, Kris Hansen showed 3M that its PFAS chemicals were in people’s bodies.
Her bosses halted her work.
As the #EPA now forces the removal of the chemicals from drinking #water, she wrestles with the secrets that 3M kept from her and the world.
#News #Science #Chemistry #Safety #Environment #Minnesota #PFAS #ForeverChemicals
"Would it not be better if one could really 'see' whether molecules...were just as experiments suggested?"
the question that decided her to specialize in X-ray cristallography, as quoted by Sharon Bertsch McGrayne (1998). Nobel Prize women in science: their lives, struggles, and momentous discoveries. Joseph Henry Press. p. 231
~Dorothy Hodgkin (May 12, 1910 – July 29, 1994)
#OTD in 1803.
British scientist John Dalton begins using symbols to represent the atoms of different elements.
In his laboratory notebook there is a list in which he set out the relative weights of the atoms of a number of elements, derived from analysis of water, ammonia, carbon dioxide, etc. by chemists of the time.
https://en.wikipedia.org/wiki/John_Dalton#Atomic_theory
Books about John Dalton at PG:
https://www.gutenberg.org/ebooks/56648
Scottish chemist and physicist James Dewar was born #OTD in 1842.
He is best known for his invention of the vacuum flask, which he used in conjunction with research into the liquefaction of gases. He also studied atomic and molecular spectroscopy, working in these fields for more than 25 years. Dewar was nominated for the Nobel Prize 8 times — 5 times in Physics and 3 times in Chemistry — but he never succeeded in winning it.
Edited 1y ago
English physicist and chemist Michael Faraday was born #OTD in 1791.
Faraday discovered that a changing magnetic field could induce an electric current in a wire, laying the foundation for the concept of the electromagnetic field. He formulated the fundamental laws of electrolysis; he was the inventor of the Faraday cage and he discovered the Faraday effect.
https://en.wikipedia.org/wiki/Michael_Faraday
Books about or by Michael Faraday at PG:
https://www.gutenberg.org/ebooks/search/?query=Michael+Faraday&submit_search=Search
Edited 1y ago
Russian chemist Vera Yevstafievna Popova was born #OTD in 1867.
Popova became known for her work in organic chemistry, a field that was rapidly developing in the late 19th century. She contributed to research on the synthesis of chemical compounds, particularly focusing on organic substances. One of her most significant areas of study was the preparation of peroxides. It was her work on these compounds that led to her untimely death.
🇺🇸It's like Wordle but for organic #chemistry buffs. Chemdle. #science https://chemdle.com/
Chemical laws
Often dismissed as the poor cousin of the sciences, chemistry has revealed natural laws that illuminate our Universe
by Vanessa A Seifert
#ICYMI: The Kaçar Lab, led by Dr. Betül Kaçar at the University of Wisconsin-Madison, is challenging the assumptions about life as we know it, its origins, and its future. Beth chatted with Dr. Kaçar in this week's #SETILive, and wow, we all learned a lot! Watch the full interview: https://youtube.com/live/hLw4olNyBng
A Magnífico Photography composition of the Cosmos superbly captured
NGC 1365 Spiral Galaxy
Edited 150d ago
Remarkable advance in basic chemistry: Researchers have created hexanitrogen, composed of six bound nitrogen atoms. It's the most energetic molecule ever made!
If it can be made & stored in bulk (big if) it could be a powerful rocket fuel or energy storage material.
https://www.chemistryworld.com/news/most-energetic-molecule-ever-made-is-stable-in-liquid-nitrogen/4021662.article
#science #tech #chemistry
