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Photograph of eight superconducting magnets undergoing final testing at Westinghouse Electric Corporation's cryogenic systems department
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Photograph of eight superconducting magnets underg...

An experiment showing how expansion is caused by heat
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An experiment showing how expansion is caused by h...

Experiments in water-culture being conducted within the Experimental Station in Tharandt, Saxony
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Experiments in water-culture being conducted withi...

Experiments with buckwheat and oats grown in pure sand with different fertilising ingredients being conducted within the Experimental Station in Tharandt, Saxony
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Experiments with buckwheat and oats grown in pure ...

Balloons used as lightning conductors in France
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Balloons used as lightning conductors in France