A unit used to compare the output of artificial sources of long-wave ultraviolet radiation (in the range of 320 to 380 nanometers), commonly called “black light.” Light with these wavelengths is used to make objects fluoresce.

American Electricians’ Handbook, 12th ed.

Page 10-128, footnote c.

Sorry. No information on contributors is available for this page.

home | units index | search |  contact drawing of envelope |  contributors | 
help | privacy | terms of use