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Tekhelet ( Hebrew: תְּכֵלֶת təḵēleṯ; alternative spellings include tekheleth, t'chelet, techelet, and techeiles) is a highly valued dye described as either "sky blue" ( Hebrew: תּכוֹל, Ta'ḵhol or Ta'chol, Ta'hol ), [1] [2] or "light blue" ( כחול בהיר, ḵa'chol bahir, ḵa'ḵhol bahir, ca'hol bahir ), [3] that held great significance in ancient ...
Cyanopsia after cataract removal The eye's lens is normally tinted yellow. This reduces the intensity of blue light reaching the retina. When the lens is removed because of cataract, it is usually replaced by an artificial intraocular lens; these artificial lenses are clear, allowing more intense blue light than usual to fall on the retina, leading to the phenomenon.
Color symbolism. Color symbolism in art, literature, and anthropology refers to the use of color as a symbol in various cultures and in storytelling. There is great diversity in the use of colors and their associations between cultures [1] and even within the same culture in different time periods. [2] The same color may have very different ...
Synesthesia A person with synesthesia may associate certain letters and numbers with certain colors. Most synesthetes see characters just as others do (in whichever color actually displayed) but they may simultaneously perceive colors as associated with or evoked by each one.
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. Impossible colors are colors that do not ...
The difference between beryl, aquamarine, and emerald is determined by the colouring and the peculiar shade of each. Beryl, though sometimes colourless (not white), is usually of a light blue bordering on a yellowish green; emerald is more transparent and of a finer hue than beryl. Beryl is also black in colour.
It’s not the only color for a cause Purple probably won’t be the only porch light color you’ll see. People use red porch lights to highlight women’s heart health.
Liturgical colours. Liturgical colours are specific colours used for vestments and hangings within the context of Christian liturgy. The symbolism of violet, blue, white, green, red, gold, black, rose and other colours may serve to underline moods appropriate to a season of the liturgical year or may highlight a special occasion.