powder photography

/ˌpaʊdər fəˌtɑgrəfi/
IPA guide

Definitions of powder photography
  1. noun
    a process for identifying minerals or crystals; a small rod is coated with a powdered form of the substance and subjected to suitably modified X-rays; the pattern of diffracted rings is used for identification
    synonyms: powder method, powder technique
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    type of:
    photography
    the process of producing images of objects on photosensitive surfaces
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