luminosity

n. the visual sensation of the brightness of a light source. It depends on the power emitted by the source and on the sensitivity of the eye to different wavelengths of light. Other factors can also influence the luminosity; for example, a light of a given luminous intensity will appear brighter in a room with white walls than in a room with dark walls.

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Psychology term of the day

May 8th 2024

peptide

n. a short chain of amino acids linked by peptide bonds. Peptides are usually identified by the number of amino acids in the chain. For example, dipeptides have two amino acids, tripeptides three, tetrapeptides four, and so on. See also polypeptide; protein.