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hudson: Analemma demo
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hudson: "De pianoles" (Henriette Ronner, 1890)
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hudson: Bertha's ring rontgenfoto
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hudson: Teylers Museum
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hudson: Large Van de Graaff
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hudson: Large Van de Graaff
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hudson: Rontgen's book on xrays
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hudson: Concave mirror
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hudson: Automaton
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hudson: Florouresence
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hudson: 1865 electronic synth
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hudson: Leiden jars
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hudson: Amsterdam regulator clock
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hudson: Leiden jars and Van de Graaf
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hudson: "Melkmeisje" (Wybrand Hendriks, 1744-1831)
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hudson: "De tuin" (Jacobus van Looy, 1893)
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hudson: Henriette Ronner (1896)
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hudson: Cats in paintings