This type of phosphor is called '' safety phosphor ''. Everything begins in the 10th century, the match had sulfur or sulfur trisulfide and if it was rubbed with something that has phosphor it lit up, over the years it progressed because it was very dangerous, people got hurt and they caused fires, so something safer was developed which is the "Safety phosphor''
This type of phosphor is called '' safety phosphor ''. Everything begins in the 10th century, the match had sulfur or sulfur trisulfide and if it was rubbed with something that has phosphor it lit up, over the years it progressed because it was very dangerous, people got hurt and they caused fires, so something safer was developed which is the "Safety phosphor''
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