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  2. Fluorescence - Wikipedia

    en.wikipedia.org/wiki/Fluorescence

    Water scatters light of shorter wavelengths above violet, meaning cooler colors dominate the visual field in the photic zone. Light intensity decreases 10 fold with every 75 m of depth, so at depths of 75 m, light is 10% as intense as it is on the surface, and is only 1% as intense at 150 m as it is on the surface.

  3. Hércules Florence - Wikipedia

    en.wikipedia.org/wiki/Hércules_Florence

    Antoine Hercule Romuald Florence (29 February 1804 – 27 March 1879) was a Monegasque-Brazilian painter and inventor, known as the isolate inventor of photography in Brazil, three years before Daguerre (but six years after Nicéphore Niépce) [1], using the matrix negative/positive, still in use.

  4. Fluorescence microscope - Wikipedia

    en.wikipedia.org/wiki/Fluorescence_microscope

    The specimen is illuminated with light of a specific wavelength (or wavelengths) which is absorbed by the fluorophores, causing them to emit light of longer wavelengths (i.e., of a different color than the absorbed light). The illumination light is separated from the much weaker emitted fluorescence through the use of a spectral emission filter.

  5. Piazza della Signoria - Wikipedia

    en.wikipedia.org/wiki/Piazza_della_Signoria

    The 14th-century Palazzo Vecchio is still preeminent with its crenellated tower. The square is also shared with the Loggia della Signoria, the Uffizi Gallery, the Palace of the Tribunale della Mercanzia (1359) (now the Bureau of Agriculture), and the Palazzo Uguccioni (1550, with a facade attributed to Raphael, who however died thirty years before its construction).

  6. Photographic lighting - Wikipedia

    en.wikipedia.org/wiki/Photographic_lighting

    Photographic lighting refers to how a light source, artificial or natural, illuminates the scene or subject that is photographed; put simply, it is lighting in regards to photography. Photographers can manipulate the positioning and the quality of a light source to create visual effects , potentially changing aspects of the photograph such as ...

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  8. Florence - Wikipedia

    en.wikipedia.org/wiki/Florence

    Florence (/ ˈ f l ɒr ən s / FLORR-ənss; Italian: Firenze [fiˈrɛntse] ⓘ) [a] is the capital city of the Italian region of Tuscany.It is also the most populated city in Tuscany, with 364,073 inhabitants in 2024, and 990,527 in its metropolitan area.

  9. Arago spot - Wikipedia

    en.wikipedia.org/wiki/Arago_spot

    The main reason why the Arago spot is hard to observe in circular shadows from conventional light sources is that such light sources are bad approximations of point sources. If the wave source has a finite size S then the Arago spot will have an extent that is given by Sb / g , as if the circular object acted like a lens. [ 18 ]

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