Chinese new year to see fireworks are very beautiful, very spectacular ~ can see different colors, then why fireworks can produce different colors?
The bottom of the fireworks is filled with black powder. When it burns and explodes, it sends the fireworks to the clouds, and then ignites the ball at the top in the air, and the fireworks bloom in the night sky like the flowers of heaven and women. Fireworks can have a variety of colors, mainly fireworks balls are filled with luminous agent and chromogenic agent. The luminescent agent is aluminum or magnesium powder. When they burn violently, they emit incandescent light. The colorant is the main character of the whole fireworks. The colorful color of fireworks depends on the colorant. Chromogenic agent is actually some common metal salts, because many metal salts can emit a variety of color awns at high temperature. For example, sodium nitrate and hydrogen carbonate will emit yellow light, strontium nitrate will emit red, barium nitrate will emit green, copper nitrate and copper sulfate will emit blue light. In order to make the fireworks explode, the luminous agent and chromogenic agent are fully burned, and the combustion agent is also contained in the fireworks ball.