1. Luminous flames are sooty while non-luminous flames are not sooty.
2. Luminous flames are not very hot while non-luminous flames are very hot.
3. Luminous flames are not steady while non-luminous flames are steady.
4. Non-luminous flames burn more efficiently than luminous flames because they are able to combine all their carbon with oxygen.
5. Luminous flames have limited access to oxygen while non-luminous flames have unlimited access to oxygen.
raphael answered the question on January 28, 2017 at 08:25
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