The final show of La Rosa International Fireworks - Bagheria (PA). Festival dell'Arte Pirotecnica Trani 2019
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That's how fireworks work
The colors of the fireworks effects in the sky are created depending on the mixture of chemicals and salts used. Mixtures containing substances from the group of alkali metals and alkaline earth metals are particularly effective.
The alkali metals include, for example, the sodium, which we know in the form of common salt (sodium chloride) and produces the color yellow. Other alkali and alkaline earth metals such as potassium salts produce the color violet. Barium salts green, strontium salts red and magnesium salts provide white effects. Other groups of elements, such as copper salts, produce the blue color.
For this reason, it is important to experiment with the aperture when shooting fireworks. As we speak of light here, one of the effect colors is darker, the others lighter to very light.
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