Comments by "Kamper Foelie" (@TheKamperfoelie) on "The Hidden Science of Fireworks" video.

  1. You get green from copper instead of blue when there is incomplete combustion of either that gas burner or a just lit copper test stick, which indeed isn’t hot enough to cause complete combustion. The incomplete combustion ‘contaminates the flame area that turns yellow because of it. Just like a flame of a candle or match or fire. Yellow from this and blue from the copper combines to us viewers as green.
    1