* I LEEDS & NORTHRUP COMPANY I INTRODUCTION The Macbeth Illuminometer was developed by the Leeds & Northrup Company in con- junction with. Looking for Macbeth illuminometer? Find out information about Macbeth illuminometer. A type of portable visual photometer in which the light to be measured is. The accuracy of the Macbeth illuminometer was studied by measuring a known source. The mean of a number of measurements from a number of operators.
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Macbeth Illuminometer – Physics Museum – The University of Queensland, Australia
We’ve also updated our Privacy Notice. Click here to see what’s new. The accuracy of the Macbeth illuminometer was illumminometer by measuring a known source. The mean of a number of measurements from a number of operators gives a precise estimate of mavbeth. To establish the relation between the sensitivity of the eye and brightness measurements, the difference thresholds for lighter and darker were determined.
Enoch, and William R. Morris, and Forrest L. You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution. Cited by links are available to subscribers only. Figure files are available to subscribers only. Article tables are available to subscribers only.
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Abstract The accuracy of the Macbeth illuminometer was studied by measuring a known source. Contrast Thresholds of the Human Eye H.
Brightness Enhancement in Intermittent Light: References You do not have subscription access to this journal. Cited By You do not have subscription access to this journal.
Figures 7 You do not have subscription access to this journal. Tables 4 You do not have subscription access to this journal. Journal of the Optical Society of America. Percentages of total brightness measurements falling within deviation ranges. Deviation Percent madbeth measurements Percent Brightness in ft-L 0 2.
Illuminimeter of measurements made by each operator falling within deviation ranges. Deviation Percent of 60 measurements by: Probability that the mean of any five successive measurements will fall within specified limits.
Threshold data taken under calibrating conditions for the Macbeth illuminometer. Table I Percentages of total brightness measurements falling within macbetu ranges.
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