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  2. Color term - Wikipedia

    en.wikipedia.org/wiki/Color_term

    Neon: bright, in either of the word's connotations; alluding to the bright glow of neon lighting. Fluorescent : very bright, sometimes also highly saturated. Named after the fluorescence effect of pigments and dyes , which can produce a luminous glow when viewed under ultraviolet light , thereby appearing significantly brighter than their ...

  3. List of brightest natural objects in the sky - Wikipedia

    en.wikipedia.org/wiki/List_of_brightest_natural...

    This list contains natural objects up to apparent magnitude 3.5. All objects are listed by their visual magnitudes, and objects too close together to be distinguished are listed jointly.

  4. Apparent magnitude - Wikipedia

    en.wikipedia.org/wiki/Apparent_magnitude

    would be seen as a large, very bright bluish disk of 35° apparent diameter −37.42 star Betelgeuse: seen from 1 AU away −30.30: star Sirius A: seen from 1 AU away −29.30: star Sun: seen from Mercury at perihelion: −27.40: star Sun: seen from Venus at perihelion −26.832: star Sun: seen from Earth [16] about 400,000 times as bright as ...

  5. Glossary of astronomy - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_astronomy

    A-type star In the Harvard spectral classification system, a class of main-sequence star having spectra dominated by Balmer absorption lines of hydrogen. Stars of spectral class A are typically blue-white or white in color, measure between 1.4 and 2.1 times the mass of the Sun, and have surface temperatures of 7,600–10,000 kelvin.

  6. Brightness - Wikipedia

    en.wikipedia.org/wiki/Brightness

    In other words, brightness is the ... The word is from a Proto-Germanic *berhtaz, ultimately from a PIE root with a closely related meaning, * bhereg-"white, bright".

  7. Bolide - Wikipedia

    en.wikipedia.org/wiki/Bolide

    Bolide from the French astronomy book Le Ciel; Notions 'Elémentaires d'Astronomie Physique (1877). The word bolide (/ ˈ b oʊ l aɪ d /; from Italian via Latin, from Ancient Greek βολίς (bolís) 'missile' [2] [3]) may refer to somewhat different phenomena depending on the context in which the word appears, and readers may need to make inferences to determine which meaning is intended in ...

  8. Shades of pink - Wikipedia

    en.wikipedia.org/wiki/Shades_of_pink

    Bright pink is a maximally saturated tone of pink that is another name for the color rose. In most Indo-European languages , the color that in English is called pink is called rosa ; therefore, the color that is called rose in English is called bright rosa in most European and Latin American countries (using whatever adjective in a particular ...

  9. List of light sources - Wikipedia

    en.wikipedia.org/wiki/List_of_light_sources

    This is a list of sources of light, the visible part of the electromagnetic spectrum.Light sources produce photons from another energy source, such as heat, chemical reactions, or conversion of mass or a different frequency of electromagnetic energy, and include light bulbs and stars like the Sun. Reflectors (such as the moon, cat's eyes, and mirrors) do not actually produce the light that ...