isophote
/ˈaɪsəˌfoʊt/
noun
- A line on a map or diagram connecting points of equal light intensity or brightness.
- In the photography textbook, an isophote helped illustrate how light falls across a curved surface.
- The weather satellite image included isophotes to indicate regions with the same amount of sunlight.
- The astronomer drew isophotes on the image of the galaxy to show areas of equal brightness.
Synonyms