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When two hemispheres are sealed by vacuum grease and evacuated, it is practically impossible to pull them apart by hand. Atmospheric pressure keeps them sealed and pushed together. Make sure people ...
The political fallout from the deadly attack on the Magdeburg Christmas market, which killed five people, continues. Far-right AfD and its opponents held a rally on Monday. Follow DW for more.
World This is Magdeburg, the city in Germany where the Christmas market attack took place: Where is it and what happened? A quiet German city 100 miles west of Berlin had its Christmas traditions ...
May 8, 1654.—One of the most striking demonstrations in physical science made during the seventeenth century was that of Otto von Guericke, who on May 8, 1654, before the assembled princes at ...