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  2. Color of chemicals - Wikipedia

    en.wikipedia.org/wiki/Color_of_chemicals

    red Sodium: Na yellow/orange Magnesium: Mg brilliant white Potassium: K lilac/violet Calcium: Ca brick red Rubidium: Rb red-violet Strontium: Sr red Caesium: Cs light blue Barium: Ba green/yellow Copper: Cu Blue/Green(Often with white flashes) Lead: Pb Grey/White

  3. Chromostereopsis - Wikipedia

    en.wikipedia.org/wiki/Chromostereopsis

    Blue–red contrast demonstrating depth perception effects 3 Layers of depths "Rivers, Valleys & Mountains". Chromostereopsis is a visual illusion whereby the impression of depth is conveyed in two-dimensional color images, usually of red–blue or redgreen colors, but can also be perceived with red–grey or blue–grey images.

  4. List of reagent testing color charts - Wikipedia

    en.wikipedia.org/wiki/List_of_reagent_testing...

    It is advised to check the references for photos of reaction results. [1] Reagent testers might show the colour of the desired substance while not showing a different colour for a more dangerous additive. [2]

  5. Chlorophyll a - Wikipedia

    en.wikipedia.org/wiki/Chlorophyll_a

    It absorbs most energy from wavelengths of violet-blue and orange-red light, and it is a poor absorber of green and near-green portions of the spectrum. [3] Chlorophyll does not reflect light but chlorophyll-containing tissues appear green because green light is diffusively reflected by structures like cell walls. [ 4 ]

  6. Ever wondered why Thanksgiving's colors are red, orange, and ...

    www.aol.com/news/ever-wondered-why-thanksgivings...

    Much like red and green symbolize Christmas, Thanksgiving has its own set of special hues. ... "It was set in the autumn and, of course, the autumnal colors are red, orange and yellow.

  7. Color theory - Wikipedia

    en.wikipedia.org/wiki/Color_theory

    This allows it to make purples that would otherwise be impossible. Likewise, a blue that is ultramarine at high concentrations appears cyan at low concentrations, allowing it to be used to mix green. Chromium red pigments can appear orange, and then yellow, as the concentration is reduced. It is even possible to mix very low concentrations of ...

  8. Doctors told woman, 21, her growing neck mole was 'nothing ...

    www.aol.com/news/doctors-told-woman-21-her...

    What are the symptoms of skin cancer? Woman diagnosed with melanoma at 21 after mole on neck suddenly began growing, getting darker. Her mother saw the changes.

  9. Are Red Moles on Skin Dangerous? Here’s What Derms Have to Say

    www.aol.com/lifestyle/red-moles-skin-dangerous...

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