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Cerulean ( / səˈruːliən / ), also spelled caerulean, is a variety of the hue of blue that may range from a light azure blue to a more intense sky blue, and may be mixed as well with the hue of green. The first recorded use of cerulean as a colour name in English was in 1590. [ 1] The word is derived from the Latin word caeruleus, "dark blue ...
An algal bloom or algae bloom is a rapid increase or accumulation in the population of algae in freshwater or marine water systems. It is often recognized by the discoloration in the water from the algae's pigments. [ 1] The term algae encompasses many types of aquatic photosynthetic organisms, both macroscopic multicellular organisms like ...
The biochemical capacity to use water as the source for electrons in photosynthesis evolved once, in a common ancestor of extant cyanobacteria (formerly called blue-green algae). The geological record indicates that this transforming event took place early in Earth's history, at least 2450–2320 million years ago (Ma), and, it is speculated ...
Blue-green algae, technically known as cyanobacteria, is a collection of microscopic organisms that are naturally present in lakes and streams. Under certain conditions, blue-green algae can ...
Cambridge Blue (colour) Capri (color) Carolina blue. Cerulean. Cobalt blue. Cobalt glass. Color of water. Columbia blue. Copper phthalocyanine.
Clockwise from top left: deep blue water, blue-green water, satellite image of the Bahamas where sunlight reflects off sand and reefs in the shallows, satellite image of phytoplankton bloom in the Southern Ocean, satellite image of the Pribilof Islands showing shades of color from different phytoplankton, and satellite image of the Baltic Sea with phytoplankton blooms.
The color of water varies with the ambient conditions in which that water is present. While relatively small quantities of water appear to be colorless, pure water has a slight blue color that becomes deeper as the thickness of the observed sample increases. The hue of water is an intrinsic property and is caused by selective absorption and ...
Color theory, or more specifically traditional color theory, is the historical body of knowledge describing the behavior of colors, namely in color mixing, color contrast effects, color harmony, color schemes and color symbolism. [ 1] Modern color theory is generally referred to as Color science. While there is no clear distinction in scope ...