Zobrazeno 1 - 2
of 2
pro vyhledávání: '"Ege, Ingeborg"'
Autor:
Alv Egeland, William J. Burke
At the beginning of the 20th century, Kristian Birkeland (1867-1917), a Norwegian scientist of insatiable curiosity, addressed questions that had vexed European scientists for centuries. Why do the northern lights appear overhead when the earth's mag
