Si l 'on vient à chauffer la boule sans modifier la tem- pérature de l' anneau, on constate qu <unk> elle ne peut plus le tra- verser; mais elle est demeurée, et ce qui le festival, (1) S 'Gravesenza, Fesces F Еще
Oersted discovers electromagnetism in 1820. Engraving with later colouration.Svenska: Ørsted uppfinner elektromagnetismen 1820. Gravyr med senare färgläggning.
Negative of the 1919 solar eclipse taken from the report of Sir Arthur Eddington on the expedition to verify Einstein's prediction of the bending of light around the sun. For positive version, see Image:1919 ec Еще
Caption: From the report of Sir Arthur Eddington on the expedition to verify Albert Einstein's prediction of the bending of light around the sun. In Plate 1 is given a half-tone reproduction of one of the n Еще