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Ocean water can appear red if there is a bloom of a specific kind of phytoplankton causing a discoloration of the sea surface. [22] These events are called "Red tides." However, not all red tides are harmful, and they are only considered harmful algal blooms if the type of plankton involved contains hazardous toxins. [23]
From space, oceans appear so dark as to be almost black. This is an image taken by the MODIS instruments of the Gulf of Mexico . The hue of the reflected sky contributes to the perceived azure color of water, but most of the cyan color comes from the intrinsic color of water scattered back up to the surface by small suspended particles.
The sky can turn a multitude of colors such as red, orange, pink and yellow (especially near sunset or sunrise) and black at night. Scattering effects also partially polarize light from the sky, most pronounced at an angle 90° from the Sun.
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The common phrase "red sky at morning" is a line from an ancient rhyme often repeated with variants by mariners [1] and others: Red sky at night, sailors' delight. Red sky at morning, sailors take warning.
It is also called sky radiation, the determinative process for changing the colors of the sky. Approximately 23% of direct incident radiation of total sunlight is removed from the direct solar beam by scattering into the atmosphere; of this amount (of incident radiation) about two-thirds ultimately reaches the earth as photon diffused skylight ...
With the change in angle comes the change in colors, which is why sunrise and sunset paint the sky with pinks and purples, oranges and yellows. Downtown Kansas City, Mo., stands against the sky at ...
Pink is a prominent secondary or tertiary color in many color space models. It is associated with softness, sweetness , love, and immaturity . [ 24 ] There is an urban legend that pink was a masculine color before the mid 20th century, [ citation needed ] based on evidence of conflicting traditions before about 1940.