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  2. Grand Prismatic Spring - Wikipedia

    en.wikipedia.org/wiki/Grand_Prismatic_Spring

    In the summer, the mats tend to be orange and red, whereas in the winter the mats are usually dark green. [8] The center of the pool is sterile due to extreme heat. The deep blue color of the water in the center of the pool results from the intrinsic blue color of water. The effect is strongest in the center of the spring, because of its ...

  3. Tetrachromacy - Wikipedia

    en.wikipedia.org/wiki/Tetrachromacy

    The four pigments in a bird's cone cells (in this example, estrildid finches) extend the range of color vision into the ultraviolet. [1]Tetrachromacy (from Greek tetra, meaning "four" and chroma, meaning "color") is the condition of possessing four independent channels for conveying color information, or possessing four types of cone cell in the eye.

  4. Weeki Wachee Springs - Wikipedia

    en.wikipedia.org/wiki/Weeki_Wachee_Springs

    Weeki Wachee Springs is a natural tourist attraction located in Weeki Wachee, Florida, where underwater performances by "mermaids," women wearing fish tails as well as other fanciful outfits, can be viewed in an aquarium-like setting in the spring of the Weeki Wachee River.

  5. The Four Seasons (Arcimboldo) - Wikipedia

    en.wikipedia.org/wiki/The_Four_Seasons_(Arcimboldo)

    Spring is represented by the image of a woman made up of a wide variety of flowers, with her head facing left. The whole figure is composed of flowers, the skin of the face and lips are rose petals and buds, the hair is a colorful and lush bouquet, the eyes are belladonna berries.

  6. Water park - Wikipedia

    en.wikipedia.org/wiki/Water_park

    Typhoon Lagoon at Walt Disney World is the most visited water park in North America, and the second most visited in the world. A water park (also waterpark, water world, or aquapark) is an amusement park that features water play areas such as swimming pools, water slides, splash pads, water playgrounds, and lazy rivers, as well as areas for floating, bathing, swimming, and other barefoot ...

  7. Impossible color - Wikipedia

    en.wikipedia.org/wiki/Impossible_color

    The human eye's red-to-green and blue-to-yellow values of each one-wavelength visible color [citation needed] Human color sensation is defined by the sensitivity curves (shown here normalized) of the three kinds of cone cells: respectively the short-, medium- and long-wavelength types.

  8. What colors can cats see? A vet reveals the answer (and it ...

    www.aol.com/colors-cats-see-vet-reveals...

    The good news is, cats can absolutely see color, which will come as a relief if you've spent money investing in a range of the best interactive cat toys in bright and bold hues! However, while ...

  9. Photoperiodism - Wikipedia

    en.wikipedia.org/wiki/Photoperiodism

    The length of the light and dark in each phase varies across the seasons due to the tilt of the earth around its axis. The photoperiod defines the length of the light, for example a summer day the length of light could be 16 hours while the dark is 8 hours, whereas a winter day the length of day could be 8 hours, whereas the dark is 16 hours.