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In page Timeline of electromagnetism and classical optics:

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  • 14th century AD – Possibly the earliest and nearest approach to the discovery of the identity of lightning, and electricity from any other source, is to be attributed to the Arabs, who before the 15th century had the Arabic word for lightning (raad) applied to the electric ray.[2]
  • 1550 – Gerolamo Cardano writes about electricity in De Subtilitate distinguishing, perhaps for the first time, between electrical and magnetic forces.[citation needed]