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#osmium

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#marum:
"
Wie gigantische Vulkanausbrüche + globale Klimaveränderungen zusammenhängen
"
".. wichtige geologische Klimaarchive .. synchronisiert .. Daten geben .. preis, wann + wie zwei große vulkanische Eruptionsphasen .. Einfluss auf Klima + Lebewelt im späten Maastricht vor 66 bis 67 Millionen Jahren hatten. .."

marum.de/Dekkan-Trapps.html

7.3.2025

www.marum.deWie gigantische Vulkanausbrüche und globale Klimaveränderungen zusammenhängen

#Random thought of the day: "I wonder what the total mass of an Arthur C. Clarke-type space artefact made of solid osmium would be?" [1]

So, take a #massive cylinder - rotating, natch, you want to use it for time travel or other #causality violations, why else would you have one? - say, 1000m in diameter, and pi times as long (why not?)...

If I've done the math right, the answer is approximately 55.74 billion tonnes.

#Curiosity sated.

[1] #Osmium is the densest natural element, at a little over 22.5g / cm^2, vs. 1g/cm^2 for #water, or 7.8g/cm^2 for #iron.

#30DayMapChallenge Day 22: 2 COLOURS.

THE LISBON BLUEPRINT - This map of Lisbon is presented as a blueprint. In Portugal, such reproductions were commonly referred to as "Marion copies", a case of genericide deriving from the ferro-prussiate reproduction process marketed by the British company Marion & Co. from the 1880s onward.

Tools: #osmium, #JOSM, #QGIS, #Photoshop, #Illustrator
Files: github.com/LX-Files/30DayMapCh

#30DayMapChallenge Day 7: Vintage Style.

OR, BETTER YET, ANCIENT STYLE - The top image shows a partial city plan of Lisbon in 2024, edited in a style resembling the oldest known plan of the city, depicted in the bottom image. This historical plan was originally drawn in 1650 by João Nunes Tinoco, a Portuguese architect.

Map data © OpenStreetMap contributors.

Tools: #osmium, #JOSM, #QGIS, #Photoshop, #Illustrator
Files: github.com/LX-Files/30DayMapCh