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  2. Colored fire - Wikipedia

    en.wikipedia.org/wiki/Colored_fire

    A campfire burning with blue and green flame colorants Different colors of natural flame from a bunsen burner, without additives. Colored fire is a common pyrotechnic effect used in stage productions, fireworks and by fire performers the world over.

  3. Cool flame - Wikipedia

    en.wikipedia.org/wiki/Cool_flame

    Cool flames were accidentally discovered in the 1810s by Sir Humphry Davy, who inserted a hot platinum wire into a mixture of air and diethyl ether vapor."When the experiment on the slow combustion of ether is made in the dark, a pale phosphorescent light is perceived above the wire, which of course is most distinct when the wire ceases to be ignited.

  4. Flame - Wikipedia

    en.wikipedia.org/wiki/Flame

    At temperatures as low as 120 °C (248 °F), fuel-air mixtures can react chemically and produce very weak flames called cool flames. The phenomenon was discovered by Humphry Davy in 1817. The process depends on a fine balance of temperature and concentration of the reacting mixture, and if conditions are right it can initiate without any ...

  5. Pyrotechnic colorant - Wikipedia

    en.wikipedia.org/wiki/Pyrotechnic_colorant

    The red lithium flame leads to lithium's use in flares and pyrotechnics Copper compounds glow green or blue-green in a flame. Calcium compounds glow orange in a flame. Sodium compounds glow yellow in a flame. A pyrotechnic colorant is a chemical compound which causes a flame to burn with a particular color.

  6. Flame test - Wikipedia

    en.wikipedia.org/wiki/Flame_test

    A flame test involves introducing a sample of the element or compound to a hot, non-luminous flame and observing the color of the flame that results. [4] The compound can be made into a paste with concentrated hydrochloric acid, as metal halides, being volatile, give better results. [5] Different flames can be tried to verify the accuracy of ...

  7. This Paint Brand Wants You to View This Cool Green as a Neutral

    www.aol.com/paint-brand-wants-view-cool...

    HGTV Home by Sherwin-Williams names Quietude, a cool green, as its 2025 Color of the Year. Learn about the hue and the brand's collab with Venus Williams.

  8. Will-o'-the-wisp - Wikipedia

    en.wikipedia.org/wiki/Will-o'-the-wisp

    Though he did succeed in creating a cool glowing cloud by mixing crude phosphine and natural gas, the color of the light was green and it produced copious amounts of acrid smoke. This was contrary to most eyewitness accounts of ignis fatuus. [59] [60] As an alternative, Mills proposed in 2000 that ignis fatuus may instead be cold flames.

  9. Beilstein test - Wikipedia

    en.wikipedia.org/wiki/Beilstein_test

    A copper wire is cleaned and heated in a Bunsen burner flame to form a coating of copper(II) oxide. It is then dipped in the sample to be tested and once again heated in a flame. A positive test is indicated by a green flame caused by the formation of a copper halide. The test does not detect fluorine/fluorides. This test is no longer ...