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  2. Vision in fish - Wikipedia

    en.wikipedia.org/wiki/Vision_in_fish

    Fish and other aquatic animals live in a different light environment than terrestrial species do. Water absorbs light so that with increasing depth the amount of light available decreases quickly. The optical properties of water also lead to different wavelengths of light being absorbed to different degrees. For example, visible light of long ...

  3. Fluoroscopy - Wikipedia

    en.wikipedia.org/wiki/Fluoroscopy

    The original difference was that radiography fixed still images on film, whereas fluoroscopy provided live moving pictures that were not stored. However, modern radiography, CT, and fluoroscopy now use digital imaging with image analysis software and data storage and retrieval. Compared to other x-ray imaging modalities the source projects from ...

  4. Dark adaptor goggles - Wikipedia

    en.wikipedia.org/wiki/Dark_adaptor_goggles

    Dark adaptor goggles are goggles made with red-tinted plastic lenses. Dark adaptor goggles were invented by Wilhelm Trendelenburg in 1916. [1] The concept is based on the work by Antoine Béclère on dark adaptation of the eye, where it is noted that fluoroscopy relies on the use of the retinal rods of the eye.

  5. Deimatic behaviour - Wikipedia

    en.wikipedia.org/wiki/Deimatic_behaviour

    Deimatic display: Callistoctopus macropus generates a bright brownish red colour with white oval spots when disturbed. Deimatic behaviour is found in cephalopods including the common cuttlefish Sepia officinalis, squid such as the Caribbean reef squid (Sepioteuthis sepioidea) and bigfin reef squid (Sepioteuthis lessoniana), octopuses [15] including the common octopus Octopus vulgaris and the ...

  6. Water opossum - Wikipedia

    en.wikipedia.org/wiki/Water_opossum

    Being a marsupial and at the same time an aquatic animal, the water opossum has evolved a way to protect its young while swimming. A strong ring of muscle makes the pouch (which opens to the rear) watertight, so the young remain dry, even when the mother is totally immersed in water. [ 6 ]

  7. Ranking the best college football quarterbacks in the ...

    www.aol.com/ranking-best-college-football...

    The college football transfer portal is again reshaping rosters, notably at the quarterback position. Our rankings of the signal callers on the move.

  8. Paid biweekly? Here's when you could get an 'extra' paycheck ...

    www.aol.com/paid-biweekly-heres-could-extra...

    People looking to save money for a big trip or financial investment may want to make plans around an "extra" paycheck in their pocket.. Employees who get paid on a biweekly basis (every other week ...

  9. Mimicry in vertebrates - Wikipedia

    en.wikipedia.org/wiki/Mimicry_in_vertebrates

    In evolutionary biology, mimicry in vertebrates is mimicry by a vertebrate of some model (an animal, not necessarily a vertebrate), deceiving some other animal, the dupe. [1] Mimicry differs from camouflage as it is meant to be seen, while animals use camouflage to remain hidden. Visual, olfactory, auditory, biochemical, and behavioral ...