Rayleigh equation

a statement of the proportion of red and green stimuli needed for a normal human eye to perceive yellow. Observers who are red-weak or green-weak require different proportions than normal observers. [John William Strutt, Baron Rayleigh (1842–1919), British physicist]

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Psychology term of the day

October 18th 2024

phentolamine

n. an alpha-adrenergic blocking agent with direct action on heart and smooth muscle. It is a potent vasodilator used in the management of severe hypertension associated with catecholamine excess, as in patients with pheochromocytomas. It is in infrequent clinical use. U.S. trade name: Regitine.