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  2. Colored pencil - Wikipedia

    en.wikipedia.org/wiki/Colored_pencil

    A variety of colored pencils. A colored pencil (American English), coloured pencil (Commonwealth English), [1] colour pencil (Indian English), map pencil, [2] pencil crayon, or coloured/colouring lead (Canadian English, Newfoundland English) is a type of pencil constructed of a narrow, pigmented core encased in a wooden cylindrical case.

  3. Copying pencil - Wikipedia

    en.wikipedia.org/wiki/Copying_pencil

    The most commonly used dye was aniline, which produced a stain that was bright purple, mauve, or some color in between, depending upon the manufacturer. Since the aniline dye was poisonous to humans, many injuries and illness related to copying pencils were reported in the medical literature, especially in the late-19th and early-20th centuries ...

  4. Crayola - Wikipedia

    en.wikipedia.org/wiki/Crayola

    Crayola LLC produces a broad range of products other than their famous crayons under the Crayola brand name. These include colored pencils, markers, inks and paints, modeling clays, coloring books, and artists' tools. As with all Crayola products, these are all marketed as non-toxic and safe for use by children. [54]

  5. Lead poisoning - Wikipedia

    en.wikipedia.org/wiki/Lead_poisoning

    Humans are not alone in suffering from lead's effects; plants and animals are also affected by lead toxicity to varying degrees depending on species. [137] Animals experience many of the same effects of lead exposure as humans do, such as abdominal pain, peripheral neuropathy , and behavioral changes such as increased aggression. [ 57 ]

  6. Pencil - Wikipedia

    en.wikipedia.org/wiki/Pencil

    A pencil (/ ˈ p ɛ n s ə l / ⓘ) is a writing or drawing implement with a solid pigment core in a protective casing that reduces the risk of core breakage and keeps it from marking the user's hand. Pencils create marks by physical abrasion, leaving a trail of solid core material that adheres to a sheet of paper or other surface.

  7. 10 Common Foods That Can Be Poisonous - AOL

    www.aol.com/lifestyle/food-10-common-foods-can...

    Fruits, vegetables, seeds and beans are all essential parts of a well-balanced and healthy diet, but if these health gems are not consumed properly, they could be poisonous and detrimental to our ...

  8. Cadmium pigments - Wikipedia

    en.wikipedia.org/wiki/Cadmium_pigments

    Cadmium pigments are a class of pigments that contain cadmium.Most of the cadmium produced worldwide has been for use in rechargeable nickel–cadmium batteries, which have been replaced by other rechargeable nickel-chemistry cell varieties such as NiMH cells, [3] but about half of the remaining consumption of cadmium, which is approximately 2,000 tonnes (2,200 short tons) annually, is used to ...

  9. Color - Wikipedia

    en.wikipedia.org/wiki/Color

    The human eye cannot tell the difference between such light spectra just by looking into the light source, although the color rendering index of each light source may affect the color of objects illuminated by these metameric light sources. Similarly, most human color perceptions can be generated by a mixture of three colors called primaries ...

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