Bryn Mawr College monographs . y^y . ; PertTf^rtent Sensation Blue /j JfO. ^i ^ Seconds Fig. I three curves representing the relative rates of development of red, yellow, green, andblue at intensities which we will designate for the present as low and intermediate; andof red, yellow, and green for a higher intensity. These determinations were made by FLICKER PHOTOMETRY 127 Reexamining the case, then, with regard to the underex-posure of the eye by the method of flicker, we find that theshort exposure times necessary to the method cause a re- M. A. Bills of this laboratory. Later, res


Bryn Mawr College monographs . y^y . ; PertTf^rtent Sensation Blue /j JfO. ^i ^ Seconds Fig. I three curves representing the relative rates of development of red, yellow, green, andblue at intensities which we will designate for the present as low and intermediate; andof red, yellow, and green for a higher intensity. These determinations were made by FLICKER PHOTOMETRY 127 Reexamining the case, then, with regard to the underex-posure of the eye by the method of flicker, we find that theshort exposure times necessary to the method cause a re- M. A. Bills of this laboratory. Later, results will be given for red, green, blue, andyellow at a number of intensities, and specifications will be made of the intensitiesemployed in both photometric and radiometric units. The colored lights used indetermining the curves given below were obtained from a spectrum of good definitionand were in each case equal in photometric value, as they should be if results are to beused in interpreting the action of light on the eye under


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