Can calcium be used for a camera flashbulb?

Calcium can be used in certain types of flashbulbs, particularly as a component in some pyrotechnic mixtures. However, traditional flashbulbs typically use magnesium or other metal compounds that produce a bright, fast burst of light. While calcium could theoretically produce light through combustion, it is not commonly used in modern flashbulb technology due to its properties and the availability of more effective alternatives.