Zirconia light

A zirconia light is an intensely brilliant chemical light produced by incandescent zirconia. It is similar in design to the Drummond light (limelight), but uses a block of zirconia instead of quicklime. Both have been replaced by the electric light.

Source
  •  This article incorporates text from a publication now in the public domain: Wood, James, ed. (1907). "Zirconia Light" . The Nuttall Encyclopædia. London and New York: Frederick Warne.
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References

<no author listed (1870)."New Zirconia Light", The Pharmaceutical Journal and Transactions. 29:81-82/>

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