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  2. Circumzenithal arc - Wikipedia

    en.wikipedia.org/wiki/Circumzenithal_arc

    A circumzenithal arc in Salem, Massachusetts, Oct 27, 2012. Also visible are a supralateral arc, Parry arc (upper suncave), and upper tangent arc.. The circumzenithal arc, also called the circumzenith arc (CZA), the upside-down rainbow, and the Bravais arc, [1] is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of sunlight ...

  3. Circumhorizontal arc - Wikipedia

    en.wikipedia.org/wiki/Circumhorizontal_arc

    The misleading term "fire rainbow" is sometimes used to describe this phenomenon, although it is neither a rainbow, nor related in any way to fire. The term, apparently coined in 2006, [ 3 ] may originate in the occasional appearance of the arc as "flames" in the sky, when it occurs in fragmentary cirrus clouds.

  4. Rainbow - Wikipedia

    en.wikipedia.org/wiki/Rainbow

    The two phenomena may be told apart by their difference in colour profile: supernumerary bands consist of subdued pastel hues (mainly pink, purple and green), while the twinned rainbow shows the same spectrum as a regular rainbow. The cause of a twinned rainbow is believed to be the combination of different sizes of water drops falling from the ...

  5. Halo (optical phenomenon) - Wikipedia

    en.wikipedia.org/wiki/Halo_(optical_phenomenon)

    A light pillar, or sun pillar, appears as a vertical pillar or column of light rising from the Sun near sunset or sunrise, though it can appear below the Sun, particularly if the observer is at a high elevation or altitude. Hexagonal plate- and column-shaped ice crystals cause the phenomenon.

  6. Atmospheric optics - Wikipedia

    en.wikipedia.org/wiki/Atmospheric_optics

    A rainbow is a narrow, multicoloured semicircular arc due to dispersion of white light by a multitude of drops of water, usually in the form of rain, when they are illuminated by sunlight. Hence, when conditions are right, a rainbow always appears in the section of sky directly opposite the Sun.

  7. Doctors Say This Nighttime Behavior Can Be A Sign Of Dementia

    www.aol.com/doctors-nighttime-behavior-sign...

    The doctor can look for potential underlying causes, including dementia, medication effects, or environmental factors, Elhelou says. From there, they can suggest effective ways to help you manage ...

  8. Sun dog - Wikipedia

    en.wikipedia.org/wiki/Sun_dog

    Also visible are parts of the 22° halo (the arcs passing through each sun dog), a sun pillar (the vertical line), and the parhelic circle (the horizontal line). A sun dog (or sundog ) or mock sun , also called a parhelion [ 1 ] (plural parhelia ) in atmospheric science , is an atmospheric optical phenomenon that consists of a bright spot to ...

  9. Mystery as investigators probe possible cause of Rainbow ...

    www.aol.com/news/mystery-investigators-probe...

    The cause of the Rainbow Bridge deadly vehicle explosion remains something of a mystery, with investigators now exploring whether a mechanical failure in the car could be to blame.