optical density
transmission density
photographic density
absorbance

Differences in optical density will show up as differences in relief.

Therefore, if light hits a medium on the right greater than its optical density, it will bend right.

Furthermore, the method yields quantitative results, based on measuring the optical density of wells.

Griffin is a gifted young university medical student with albinism, who studies optical density.

More sophisticated techniques will show proportional differences in optical density.

No increase in optical density was evident within crushed gray matter (Fig.

Gloss papers give the highest optical density in the printed image.

More often however, is it used to describe the bulk 2-photon optical density of a sample.

The average optical densities for each peptide were divided by the background.

The thicker the specimen, the greater the optical density and the less its transparency.