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Illustration of the positional parallax used for binocular stereopsis. The two eyes foveate (focus on) the same point, here indicated by F. While the retinal images of all three objects fall on the same point in the left eye, these same three…

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from article Parallax and the brain

Illustration of the motion parallax generated by observer translation to the left or to the right. Observer translation in opposite directions results in eye movements in opposite directions. The retinal images of objects nearer and farther than the…

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from article Parallax and the brain

Illustration of the stimulus parameters for motion parallax generated by observer translation to the right. The viewing distance to the fixation point (F) is given by the value f; α denotes the angle of the eye; angle θ is the retinal position of…

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from article Oyster mushrooms

(a) King oyster mushrooms (Pleurotus eryngii) fruiting from supplemented cottonseed hull substrate. (b) Pleurotus ostreatus fruiting from straw/cottonseed hull substrate contained in plastic bags. (c) Pleurotus cornucopiae fruiting from cottonseed…

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from article Oyster mushrooms

Nutrients in raw oyster mushrooms based on the U.S. Food and Drug Administration reference serving size of 84 g (3 oz) for raw mushrooms. Oyster mushrooms are not a significant source of saturated fat, trans fat, cholesterol, sugars, vitamin A, or…

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from article Fluorescence microscopy: high-resolution methods

STED microscopy. (a) Energy diagram for a classical fluorescence event: Absorption of photons leads to spontaneous emission of fluorescence within typically a few nanoseconds, corresponding to the lifetime of the excited state of the fluorophore.…

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from article Extensible Markup Language (XML) databases