illumination 
| Title |
Date |
Author |
|---|---|---|
| Brightness Discrimination Data for the Specification of Quantity of Illumination | Nov 01, 1952 | H. Richard Blackwell |
| Title |
Date |
Author |
|---|---|---|
| Brightness Discrimination Data for the Specification of Quantity of Illumination | Nov 01, 1952 | H. Richard Blackwell |