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  2. Photoperiodism - Wikipedia

    en.wikipedia.org/wiki/Photoperiodism

    A short-day plant will not flower if light is turned on for a few minutes in the middle of the night and a long-day plant can flower if exposed to more red-light in the middle of the night. [ 9 ] Cryptochromes are another type of photoreceptor that is important in photoperiodism.

  3. Adaptation (eye) - Wikipedia

    en.wikipedia.org/wiki/Adaptation_(eye)

    Night vision is of lower quality than day vision because it is limited in resolution and colors cannot be discerned; only shades of gray are seen. [1] In order for humans to transition from day to night vision they must undergo a dark adaptation period of up to two hours [ 2 ] in which each eye adjusts from a high to a low luminescence "setting ...

  4. Nocturnality - Wikipedia

    en.wikipedia.org/wiki/Nocturnality

    The kiwi is a family of nocturnal birds endemic to New Zealand.. While it is difficult to say which came first, nocturnality or diurnality, a hypothesis in evolutionary biology, the nocturnal bottleneck theory, postulates that in the Mesozoic, many ancestors of modern-day mammals evolved nocturnal characteristics in order to avoid contact with the numerous diurnal predators. [3]

  5. Night owl - Wikipedia

    en.wikipedia.org/wiki/Night_owl

    A Young Man Reading by Candlelight, Matthias Stom (ca. 1630). A night owl, evening person, or simply owl, is a person who tends or prefers to be active late at night and into the early morning, and to sleep and wake up later than is considered normal; night owls often work or engage in recreational activities late into the night (in some cases, until around dawn), and sleep until relatively ...

  6. Ward No. 6 - Wikipedia

    en.wikipedia.org/wiki/Ward_No._6

    Distraught with the turn of his fate and indignation, Ragin had a stroke after a day of incarceration at the mental ward no.6. Ivan Dmitritch Gromov: one of the patients of ward no. 6, described to be excited, gentle, agitated, but most notably with a paranoia of persecution. The slightest of noises would cause Gromov to look over his shoulder ...