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 Both have been replaced by the electric light.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

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References

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