Two specimens of artificial rubies (by Crookes?).

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Two specimens of artificial rubies (by Crookes?).
Science Museum Group
© The Board of Trustees of the Science Museum

Two specimens of artificial rubies (by Crookes?).

Details

Category:: Optics

Object Number:: 1923-379

type:: specimens

credit:: Institution of Electrical Engineers

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Two specimens of artificial rubies (by Crookes?).

Details

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