A 3,400 year old painter's palette originating from ancient Egypt.

It was a great pleasure to present "The Gasometer, an instrument of War" at Institut für mathematische, naturwissenschaftliche und technische Bildung, Europa-Universität Flensburg. Great diskussion . Thank you for the invitation Peter Heering

Our #instrumentofthemonth comes with its own manual: A 19th-century Ottoman astrolabe quadrant made for 41-degree, the latitude of Istanbul. The inscriptions on the sides describes several operations including how to find the times of five daily prayers. khalilicollections.org/collections/is…

Just gave a guided tour at “Hauchs Physiske Cabinet” for the H.C. Ørsted Society. The Gazometer attracted a lot of attention.

Malevolent forces at work in the UK Department for Transport. A Victorian railway arch was vandalised when filled in with concrete by a government agency. Scandalous! theguardian.com/culture/2021/j… #railway #History #Historyoftechnology

Last week, an #excursion to #Sorø took place in the context of the "Objects of Understanding" #conference. We set off by bus in the morning in sunny weather. The participants then spent the day in "Hauchs #Physiske Cabinet", among other places. #objectsofunderstanding

A Japanese house constructed without any nails over 100 years ago

Looking forward to giving a paper today at the session on "Amateurs and Precision Instruments in the Second Half of the 18th Century" @ #ESHS2022 at 14:00 Session 58.

I delivered my paper: "Instruments taking a philosophical turn?" yesterday at the 2022 Scientific Instruments Symposium in Athens Scientific Instrument Commission #sic2022athens Good to see old friends again. Good to be back!

Thank you to Robert Anderson, Sara Schechner, Richard Kremer and David Pantalony for giving a brilliant session @ SIC40: Reflecting on Four Decades of Symposia and the Development of Instrument Studies Scientific Instrument Commission #sic2022athens

An Ancient Greek mystery: The Antikythera mechanism from 2nd century BC capable of predicting astronomical positions, eclipses+++. Amazing. Nothing remotely this advanced was seen for the next 1400 years. I saw it 20 years ago and today. Excited!! Scientific Instrument Commission #sic2022athens

Swedish Count Koenigsmarck on 26 September 1687 gave the order to bomb the Parthenon temple which was used was used as a gunpowder store during the Morean War, as my Swedish friend Olov Amelin told me. The temple had stood three thousand years. Svensk jävla! #sic2022athens

Unthinkable, unbelievable! Tonight, 450 years ago, Tycho Brahe looked at the sky and saw a bright new star. The heavens were eternal and unchangeable. A supernova changed this on November 11th 1572. Tycho published his findings in May 1573 in De nova stella #histAstro #HistSci

Here's this month's #mysteryinstrument Have a guess. We'll post the answer later today.

Exciting job posted at Royal Museums Greenwich (RMG) as Assistant Curator: History of Science. Deadline 6th Feb 2023. app.vacancy-filler.co.uk/salescrm/Caree… #HistSci #HistTech #HPST

Position at CSHI Harvard. The Collection of Historical Scientific Instruments, Harvard University, seeks a Deputy Director. With a collection of more than 20,000 objects from about 1400 to the present, it's a most exciting place to work. sjobs.brassring.com/TGnewUI/Search… #histsci #Jobs

I am delighted to have been appointed President of the Danish Society for the History of Science and will do my utmost to ensure its success. Please join to you wish to attend meetings: videnskabshistorisk.dk/EnglishInfo.htm #HPS #HPST #videnskabshistorie

Looking forward to the talk by Jan von Plato today on Gödel’s achievement arranged by the Danish History of Science Society and the Danish Mathematical Society geotop.math.ku.dk/calendar/gdels…