Illumination in relation to automobile driving is considered one of the most important problems of highway safety. Because of contrast between source of light and background, lights which give sufficient illumination are considered blinding. An apparatus is described which makes possible the accurate measurement of tolerance to light under different atmospheric conditions. Calibration of the light falling on the test object and the light impinging on the retina makes possible measurement of the optimal conditions of illumination under different degrees of darkness. The light measurements are made by electrometric methods.
Proceedings of the Iowa Academy of Science
© Copyright 1940 by the Iowa Academy of Science, Inc.
Martinson, Glenn O.
"An Apparatus for Measuring Tolerance to Light and Visual Efficiency Under Different Conditions of Illumination,"
Proceedings of the Iowa Academy of Science: Vol. 47:
, Article 83.
Available at: https://scholarworks.uni.edu/pias/vol47/iss1/83