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An "Average Eye" For Heterochromatic Photometry, and a Comparison of a Flicker and an Equality-of-Brightness Photometer (Classic Reprint)
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Dieser Artikel gilt, aufgrund seiner Grösse, beim Versand als 2 Artikel!
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Excerpt from An "Average Eye" For Heterochromatic Photometry, and a Comparison of a Flicker and an Equality-of-Brightness Photometer
All the photometers used had pupil apertures 5 mm in diameter. Each photometer head was provided with holders for absorption glasses, as well as holders for absorption cells, especially con structed to prevent any diffusion of stray light into the photo metric field.
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