isophotes
/ˈaɪsəˌfoʊts/
noun
- Plural of isophote; lines on a map or diagram connecting points of equal light intensity or brightness.
- The graphic designer used isophotes to create a visual map of the light levels in the room.
- The researchers plotted several isophotes to study the distribution of light in the nebula.
- By comparing isophotes from different years, they could see how the star's brightness changed.