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Entoptic phenomena (from Ancient Greek ἐντός (entós) 'within' and ὀπτικός (optikós) 'visual') are visual effects whose source is within the human eye itself. (Occasionally, these are called entopic phenomena, which is probably a typographical mistake.) In Helmholtz 's words: "Under suitable conditions light falling on the eye ...
An afterimage is an image that continues to appear in the eyes after a period of exposure to the original image. An afterimage may be a normal phenomenon (physiological afterimage) or may be pathological ( palinopsia ). Illusory palinopsia may be a pathological exaggeration of physiological afterimages. Afterimages occur because photochemical ...
White often represents purity or innocence in Western culture, [2] particularly as white clothing or objects, can be stained easily. In most Western countries white is the color worn by brides at weddings. Angels are typically depicted as clothed in white robes. In many Hollywood Westerns, bad cowboys wear black hats while the good ones wear white.
Black History Month Quotes. "Character is power." — Booker T. Washington, educator and author. "I had no idea that history was being made. I was just tired of giving up." — Rosa Parks, civil ...
Scleral tattooing is the practice of tattooing the sclera, or white part, of the human eye. Rather than being injected into the tissue, the dye is injected between two layers of the eye, then gradually spreads. The process remains uncommon due to professionals' discomfort performing the procedure [ 1] and is illegal in the American states ...
The dangers of LED face masks you should know about. The latest recall in the beauty world just happens to involve one of the biggest at-home trends for skincare junkies and one of the leading ...
Black Skin, White Masks (French: Peau noire, masques blancs) is a 1952 book by philosopher-psychiatrist Frantz Fanon. The book is written in the style of autoethnography , with Fanon sharing his own experiences while presenting a historical critique of the effects of racism and dehumanization , inherent in situations of colonial domination , on ...
The LA28 organizing committee is targeting a no-car Games, a big ambition for a city known for its traffic. Plans to build new rail lines that would crisscross the city were abandoned because of ...