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I believe when talking about naval ships, commissioning is when they enter active service, so construction probably began early 90s, maybe even late 80s, and probably a few years of designing, bidding, etc before that. And of course there were probably all of the usual idiot politicians, bean counters, stubborn assholes, sales people, etc. involved who pushed for older tech. Maybe because everything else they had worked on the old disks, maybe they were skeptical of the new tech not being robust or tested enough or wouldn’t catch on, maybe it was just cheaper, etc.
I’m willing to bet that they somehow locked themselves into using 8 inch disks in the early to mid 80s if not earlier, when the 5¼ discs were still new-ish and the 3½ were brand-new or not even available yet.
Some glow in the dark chemicals are called phosphors, and while they’re named after phosphorus, they usually do not contain any phosphorus, zinc sulfide for example. These are the kinds of things you might find on a watch face or stickers or whatever that need to absorb light from some other source first.
To make it even more confusing, phosphorus isn’t actually phosphorescent, its glow is from chemiluminescence, the result of a chemical reaction.
And for what it’s worth, stuff that glows under a black light is fluorescent.
I don’t think phosphorus has ever been used for glowing tattoos, and if it was I’m pretty sure no one is still using it. We’re well outside of my realm of expertise, but it should also be considered that how a chemical enters your body can make a difference in how toxic it is too, there’s a whole lot of chemistry at work in your body, and ingesting something and absorbing it through digestion isn’t necessarily going to have the same effect as absorbing it through your skin, there’s a reason different medications have to be taken oral, allowed to dissolve under your tongue, given as a suppository, intravenously, intramuscularly, subdermally, etc. that said, I’m pretty sure phosphorus is bad no matter how you put it into someone’s body.