Tootfinder

RE: #OTD the first large #planetarium in the world opened in Wuppertal, Germany, also introducing the ant-shaped projector design which most would use for the following 3/4 century.

News story on a significant earthquake in Uzbekistan, 50 years ago, May 17, 1976 (Fargo-Moorhead Forum archives). Mentions the Medvedev scale, apparently now the the MSK or MSK-64 scale. That scale is not mentioned in North American, physical geology textbooks I have seen, although it's apparently similar to the Mercalli scale.
Also, the first page of a scientific paper on it, from 1980. ⚒️🧪
#OTD

#OTD 2014 Cross-border rail @ Brussel-Zuid / Bruxelles-Midi
SNCB - NS - DB - SNCF

50 years ago, 16 April 1976. "13 Oil Rig Workers Die When Survival Capsule Capsizes" in the Gulf of Mexico. They had tried to escape from an offshore drilling platform. #OTD Fargo Forum newspaper.

75 years ago #OTD the #interstellar #hydrogen line at 21 cm was detected for the first time in Europe (https://sci-hub.vg/10.1038/168357a0), following the first-ever detection - in the U.S. - in March 1951 (https://sci-hub.vg/10.1038/168356a0): see https://www.astron.nl/may-11-75-years-of-the-hydrogen-line-in-the-netherlands-from-kootwijk-to-westerbork-and-ska/ for what followed.

#OTD 2015 #Utrecht

#NowPlaying “I’m Just A Bill” was first aired #OTD in 1976. https://www.youtube.com/watch?v=SZ8psP4S6BQ
…

RE: #OTD

#OTD 2010

Jimmy Carter wins Wisconsin primary, 50 years ago April 7, 1976, although Udall thought he had it. #OTD #Fargo Forum newspaper front page.

#OTD 2011: #Amsterdam opende het 100e publieke laadpunt voor elektrisch vervoer, en het eerste in stadsdeel Nieuw-West

#OTD im Jahr 1945 leisten die Befreiten den Schwur von Mauthausen: »Der Friede und die Freiheit sind die Garanten des Glücks der Völker, und der Aufbau der Welt auf neuen Grundlagen sozialer und nationaler Gerechtigkeit ist der einzige Weg zur friedlichen Zusammenarbeit der Staaten und Völker. (…) >

#OTD 2021: Time for the annual bicycle harvest in Utrecht

#OTD On this day in 2012, I saw more electric cars gathered together in Oslo than I had ever seen before. It’s now a much more common sight in more and more places around the world.
#EV

The aftermath of the first successful flight - 2.5 seconds, 12.5 meters high - of a liquid-fueled #rocket 100 years ago #OTD as photographed by Robert H. #Goddard himself in Auburn, Mass. The flight itself was neither filmed nor photographed but there is plentiful other material about the history-making experiments available, linked from https://skyweek.wordpress.com/2026/03/12/allgemeines-live-blog-ab-dem-12-marz-2026/#Mar16 (much of it just gone up).

Kritik der Bundeswehr in der Praxis. Hier gegen die Gelöbnisfeier am 6. Mai 1980 in Bremen. #OTD https://de.wikipedia.org/wiki/Gel�%B6bnisfeier_in_Bremen_1980

»Alle Macht den Räten (Sowjets) – Keine Macht der Partei«, das kann die Avantgarde der Diktatur des Proletariats im Sowjetrussland nicht ertragen und lässt die Rebellion von Kronstadt durch bolschewistische Truppen am 18. März des Jahres 1921 endgültig zerschlagen. Gegen das Vergessen!
#OTD #Kronstadt #RoterTerror #Sowjets #Lenin #Trotzki