Bibliolater ππππ @bibliolater@qoto.org
Not a bot; male approaching fifty years of age; married; father; barely reaching up to the level of mediocrity; a general ignoramus who reads occasionally.
Toots are humanities, sciences, books and maps related. Follows or boosts or mentions β endorsements.
Addendum: for those wondering, I do not physically resemble a fountain pen.
Joined Nov 2022
Bibliolater ππππ
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Researchers have made a significant advancement in polymer solar cell technology by developing a method to improve molecular interactions using side-chain engineering. This approach eliminates the need for toxic halogenated processing solvents, thereby enhancing the cellsβ efficiency and stability.
#science #research #solarcells #chemistry #polymersolarcells
https://www.sciopen.com/article/10.26599/NRE.2023.9120088
https://scitechdaily.com/researchers-use-molecular-engineering-to-improve-organic-solar-cell-efficiency/
Bibliolater ππππ
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Parts of the Canadian #Arctic observed temperatures up to 10Β°C above the 1981-2010 average during the month of November!
Data from ECMWF ERA5 reanalysis at https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels-monthly-means?tab=overview
Bibliolater ππππ
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Carl Jacobi German mathematician who, with Niels H. Abel of Norway, founded the theory of elliptic functions was born #OTD in 1804.
One of Jacobi's greatest accomplishments was his theory of elliptic functions & their relation to the elliptic theta function which was developed in his great treatise Fundamenta nova theoriae functionum ellipticarum. They are of great importance in mathematical physics because of their role in the inverse problem for periodic & quasi-periodic flows.
"To address questions about the real appearance of St Anthony, we applied body mass estimation equations to the osteometric measurements taken in 1981, during the public recognition of the Saintβs skeletal remains. Both the biomechanical and the morphometric approach were employed to solve some intrinsic limitations in the equations for body mass estimation from skeletal remains. The estimated body mass was used to assess the physique of the Saint with the body mass index."
Mongillo J, Vescovo G, Bramanti B (2021) Belly fat or bloating? New insights into the physical appearance of St Anthony of Padua. PLOS ONE 16(12): e0260505. https://doi.org/10.1371/journal.pone.0260505 #OpenAccess #OA #Research #Article #Science #Academia #Academic @science
Gold-Mining Counties: Bartholomew, J. G. https://archive.org/details/dr_gold-mining-counties-6920146 via @internetarchive #Map #Maps #Cartography #Mapstodon #Atlas #Statistics #Gold #Mining #C20th #20thCentury
#Image credit: David Rumsey Map Collection, David Rumsey Map Center, Stanford Libraries.
Bibliolater ππππ
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BBC News: Iron Age: How #Wales was ruled from hillforts pre-Romans
πΊπΈ Map of the United States of America, 1880. : Howland, H.G. https://archive.org/details/dr_map-of-the-united-states-of-america-1880-2709033 via @internetarchive #Map #Maps #Cartography #Mapstodon #US #USA #UnitedStates #America #C19th #19thCentury
#Image credit: David Rumsey Map Collection, David Rumsey Map Center, Stanford Libraries.
"Medieval hospitals were founded to provide charity, but poverty and infirmity were broad and socially determined categories and little is known about the residents of these institutions and the pathways that led them there. Combining skeletal, isotopic and genetic data, the authors weave a collective biography of individuals buried at the Hospital of St John the Evangelist, Cambridge."
Inskip S, Cessford C, Dittmar J, et al. Pathways to the medieval hospital: collective osteobiographies of poverty and charity. Antiquity. 2023;97(396):1581-1597. doi: https://doi.org/10.15184/aqy.2023.167 #OpenAccess #OA #Journal #Article #England #Cambridge #Medieval #Hospitals #Osteology #Charity #Archaeology #Archaeodons #Genetics #Science #Academia #Academic @archaeodons @science
Bibliolater ππππ
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Itβs hard not to say βAIβ when everybody else does too, but technically calling it AI is buying into the marketing. There is no intelligence there, and itβs not going to become sentient. Itβs just statistics, and the danger they pose is primarily through the false sense of skill or fitness for purpose that people ascribe to them.
The secrets of Einstein's unknown equation β with Sean Carroll.
"The real Einstein's Equation is part of general relativity, which relates the curvature of spacetime to the mass and energy distributed within it.
Sean explains why the geometry of spacetime has anything to do with gravity, and how this famous equation expresses the way that spacetime curves." https://youtu.be/BRudidBcfXk #Youtube #Video #Science #Einstein #Space #Universe #Equation #Physics #Lecture @science @physics
Bibliolater ππππ
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New #genes found that can arise 'from nothing'.
Bibliolater ππππ
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"Where Did the Open Access Movement Go Wrong?" This is a really interesting interview. While I strongly support the #OA movement, it's also clear that OA has been coopted by many traditional journals to make money, entrenching barriers to academic publishing for unfunded, nontraditional and marginalised scholars. Leaving many of us unable to afford to publish. (Not forgetting the fantastic mainly-online journals that have no APCs on principle, which I know there are more and more of.)
Bibliolater ππππ
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French physicist Augustin-Jean Fresnel, in a memoir read to the Academy of Sciences, coins the terms linear polarization, circular polarization, and elliptical polarization, and reports a direct refraction experiment verifying his theory that optical rotation is a form of birefringence #OTD in 1822.
After Fresnel, the defining feature of polarized light was that the perpendicular components of vibration had a fixed ratio of amplitudes and a fixed difference in phase. via @wikipedia
Bibliolater ππππ
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Swedish pharmaceutical chemist Carl Wilhelm Scheele was born #OTD in 1742. Scheele discovered oxygen (although Joseph Priestley published his findings first), and identified molybdenum, tungsten, barium, hydrogen, and chlorine, among others. Scheele discovered organic acids tartaric, oxalic, uric, lactic, and citric, as well as hydrofluoric, hydrocyanic, and arsenic acids. via @wikipedia
Books by Carl Wilhelm Scheele at PG:
https://www.gutenberg.org/ebooks/author/31878
Bibliolater ππππ
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How each countryβs #emissions and #climate pledged compare, chart @FT https://www.ft.com/content/9dfb0201-ef77-4c05-93cd-1e277c7017cf
Bibliolater ππππ
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Gemma Frisius, who first published the method of triangulation for surveying, was born 8 December 1508 #histsci #histtech https://thonyc.wordpress.com/2012/05/25/mapping-the-history-of-triangulation/
Bibliolater ππππ
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The word 'tooth' is etymologically related to French 'dent', German 'Zahn', Irish 'dΓ©ad', Ancient Greek 'odαΉn', and Sanskrit 'dΓ‘n'.
These words stem from the same Proto-Indo-European ancestor.
They are remnants of an ancient present participle meaning "biting".
Here's more:
Bibliolater ππππ
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An international team led by archaeologists from Freie UniversitΓ€t Berlin uncovered fortified prehistoric settlements in a remote region of Siberia. The results of their research reveal that hunterβgatherers constructed complex defense structures around their settlements 8,000 years ago.
https://phys.org/news/2023-12-oldest-fortresses-world.html
Bibliolater ππππ
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The Oldest Voices That We Can Still Hear: Hear Audio Recordings of Ghostly Voices from the 19th Century
Not a bot; male approaching fifty years of age; married; father; barely reaching up to the level of mediocrity; a general ignoramus who reads occasionally.
Toots are humanities, sciences, books and maps related. Follows or boosts or mentions β endorsements.
Addendum: for those wondering, I do not physically resemble a fountain pen.
Joined Nov 2022
