Letter | Published:

Nature of the Spearpoints observed during the Combustion of Zirconium Droplets

Naturevolume 207page741 (1965) | Download Citation



PHOTOGRAPHIC time exposures of rapidly moving metal droplets which are burning luminously in a gaseous oxidizer often exhibit curious spearpoints. These streak images: (1) become less intense and gradually narrower; (2) suddenly intensify and broaden; (3) finally narrow again as they gradually extinguish altogether. The overall photographic trace resembles a pointed spear, hence the name.

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  1. Sandia Laboratory, Albuquerque, New Mexico

    • L. S. NELSON


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