1 янв 1755 г. - Magnesium

Описание:

-This is one way to extract magnesium from its ore:
-Several magnesium ores are worked commercially and the metal can be extracted by electrolysis or by thermal reduction.

-Discovered during the contemporary history modern (metal age). It describes the historical period from approximately 1945 to the present.

-Magnesium uses
-cattle feed and fertilisers
-flash cameras
-Magnesium is an essential element in both plant and animal life