Brewster Angle Meter
Wall Art and Photo Gifts from Mary Evans Picture Library
Brewster Angle Meter
Placing a gem inside a Brewster Angle Meter. This instrument was introduced in 1999. This instrument can be used to find the refractive index (RI) of gems, which can help with identification
Media ID 8582245
© Mary Evans / Natural History Museum
Angle Apparatus Brewster Gemstone Identification Instrument Measure Meter Museum Scientist Scientific Scientist Technical Technology
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