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  2. Light characteristic - Wikipedia

    en.wikipedia.org/wiki/Light_characteristic

    A light characteristic is all of the properties that make a particular navigational light identifiable. Graphical and textual descriptions of navigational light sequences and colours are displayed on nautical charts and in Light Lists with the chart symbol for a lighthouse, lightvessel, buoy or sea mark with a light on it. Different lights use ...

  3. Visible spectrum - Wikipedia

    en.wikipedia.org/wiki/Visible_spectrum

    The visible range of most animals evolved to match the optical window, which is the range of light that can pass through the atmosphere. The ozone layer absorbs almost all UV light (below 315 nm). [19] However, this only affects cosmic light (e.g. sunlight), not terrestrial light (e.g. Bioluminescence).

  4. Light - Wikipedia

    en.wikipedia.org/wiki/Light

    Beam of sun light inside the cavity of Rocca ill'Abissu at Fondachelli-Fantina, Sicily. The speed of light in vacuum is defined to be exactly 299 792 458 m/s (approximately 186,282 miles per second). The fixed value of the speed of light in SI units results from the fact that the metre is now defined in terms of the speed of light.

  5. Tapetum lucidum - Wikipedia

    en.wikipedia.org/wiki/Tapetum_lucidum

    The dark blue, teal, and gold tapetum lucidum from the eye of a cow Retina of a mongrel dog with strong tapetal reflex. The tapetum lucidum (Latin for 'bright tapestry, coverlet'; / t ə ˈ p iː t əm ˈ l uː s ɪ d əm / tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) [1] is a layer of tissue in the eye of many vertebrates and some other animals.

  6. List of bioluminescent organisms - Wikipedia

    en.wikipedia.org/wiki/List_of_bioluminescent...

    Bioluminescence is the production of light by living organisms. This list of bioluminescent organisms is organized by the environment, covering terrestrial, marine, and microorganisms. Terrestrial animals

  7. Wombats, other Australian animals glow in the dark under UV ...

    www.aol.com/wombats-other-australian-animals...

    Naturally, Australian researchers decided to study their native animals under the same light, according to ABC. Scientists have discovered that wombats, platypi and other Australian mammals glow ...

  8. A Complete Guide to the 12 Chinese Zodiac Signs, from ... - AOL

    www.aol.com/complete-guide-12-chinese-zodiac...

    This is what is used to calculate a person's natal chart by Chinese zodiac experts. "For example, babies born between Feb. 4, 2024, and Feb. 3, 2025, will have the Wood Dragon as the animal sign ...

  9. Light effects on circadian rhythm - Wikipedia

    en.wikipedia.org/wiki/Light_effects_on_circadian...

    The earth's natural light-dark cycle is the basis for the release of these hormones. [13] The length of light exposure influences entrainment. Longer exposures have a greater effect than shorter exposures. [12] Consistent light exposure has a greater effect than intermittent exposure. [14]