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  2. Blue lava - Wikipedia

    en.wikipedia.org/wiki/Blue_lava

    "Blue lava" is an electric-blue fire that burns when sulfur combusts, producing a neon-blue flame. Sulfur burns when it comes into contact with hot air at temperatures above 360 °C (680 °F), which produces the energetic flames. [2] Actual lava is red-orange in color, given its temperature.

  3. Flame - Wikipedia

    en.wikipedia.org/wiki/Flame

    For a given flame's region, the closer to white on this scale, the hotter that section of the flame is. The transitions are often apparent in fires, in which the color emitted closest to the fuel is white, with an orange section above it, and reddish flames the highest of all. [ 7 ]

  4. 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.

  5. Oxidizing and reducing flames - Wikipedia

    en.wikipedia.org/wiki/Oxidizing_and_reducing_flames

    Reducing, neutral and oxidizing oxyacetylene flames. A flame is affected by the fuel introduced and the oxygen available. A flame with a balanced oxygen-fuel ratio is called a neutral flame. The color of a neutral flame is semi-transparent purple or blue. [1] This flame is optimal for many uses because it does not oxidize or deposit soot onto ...

  6. Luminous flame - Wikipedia

    en.wikipedia.org/wiki/Luminous_flame

    A variety of Bunsen burner flames. Bunsen burners may be adjusted from a highly luminous flame (left) to a hotter 'roaring blue flame' (right) One of the most familiar instances of a luminous flame is produced by a Bunsen burner. This burner has a controllable air supply and a constant gas jet: when the air supply is reduced, a highly luminous ...

  7. The universe is getting hotter as it gets older — here’s why

    www.aol.com/universe-getting-hotter-gets-older...

    The cosmic web — ribbons of gas and dust tying galaxies together — are the largest structures in the Universe, and a new study shows they are growing hotter over time.

  8. Columbus is hotter than its suburbs. Why where you live could ...

    www.aol.com/columbus-hotter-suburbs-why-where...

    Heat is not distributed equally over Franklin County.

  9. Bunsen burner - Wikipedia

    en.wikipedia.org/wiki/Bunsen_burner

    The yellow flame is considered "dirty" because it leaves a layer of carbon on whatever it is heating. When the burner is regulated to produce a hot, blue flame, it can be nearly invisible against some backgrounds. The hottest part of the flame is the tip of the inner flame, while the coolest is the whole inner flame.