just noticeable difference

noun

1. jnd. psychol another name for difference threshold

Example Sentences

A much-discussed unit of measurement in smell studies is the J.N.D. — the Just Noticeable Difference, or the degree to which chemicals have to differ from one another in order for us to tell them apart.

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"Even in a group size of 40, one speaker can raise the group sound level . . . near the just noticeable difference," according to the results.

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Food technologists define shelf life not by how long it takes for food to become inedible, but how long it takes for a trained sensory panel to detect a “just noticeable difference” between newly manufactured and stored cans.

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"Roughly speaking, human eyes can tell apart two colors only if their wavelengths differ at least by a certain amount—the 'just noticeable difference,'" Tria said.

Read more on Scientific American