Crookes, William, 1832-1919. "Radiant matter" : a resum ̌of the principal lectures and papers of Prof. William Crookes, on the "fourth state of matter."

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Crookes, William, 1832-1919.

"Radiant matter" : a resum ̌of the principal lectures and papers of Prof. William Crookes, on the "fourth state of matter."

Electric discharges through gases.

Cathode rays.

Cathode ray tubes.