Day 13 #ArtAdventCalendar: The vampire squid (Vampyroteuthis infernalis), literally the ‘vampire squid from hell’ is a small deep sea cephalopod found throughout temperate and tropical oceans with two long retractile filaments, located between the first two pairs of arms on its dorsal side, unlike either octopuses or squids. 🧵1/2

#cephalopod #linocut #sciart #mastoArt #printmaking #VampireSquid #squid

Happy birthday to #physicist Lise Meitner (1878-1968) who explained #nuclear #fission. She worked with chemists Hahn & Straßmann in 30s Berlin, investigating whether there were any stable elements beyond uranium. They discovered bombarding nucleus of U-235 with neutrons actually triggered it to fission, or break, into 2 nuclei of roughly half the size & some free neutrons! Hahn’s chemistry lead to startling discovery of barium,🧵

#linocut #printmaking #sciart #histsci #womenInSTEM ⁠ #MastoArt

6 × 8” linocut relief print, CC BY 4.0

#linocut #printmaking #InternetArchive

Happy birthday to #geochemist Charles David Keeling (1928 - 2005) whose decades long observations of CO2 in air samples from Mauna Loa Observatory were some of the 1st direct data to show the human contribution to greenhouse effect & global warming. The 'Keeling Curve' (in copper & red) shows both the seasonal variations (the wiggles) & the strong upward trend with time as the greenhouse gas built up in the atmosphere. 🧵1/

#linocut #printmaking #climateChange #geochemistry #sciart #MastoArt

Happy birthday to Antonie van Leeuwenhoek (1632 – 1723), the Dutch scientist & progenitor of #microbiology known for his improvements to microscope tech. He was a draper in Delft, then a politician with an interest in lensmaking. Using his handmade #microscopes, he was 1st to observe microorganisms, which he called tiny animals, or "animalcules". He also made pioneering microscopic observations on muscle fibres, bacteria, coffee & … 🧵1/n

#linocut #printmaking #sciart #histstm⁠ #MastoArt