If thats actually from the smithsonian in Washington DC, its probably in the recently renovated american history museum. There is a section in the lower levels all about technology and products the changed regulations. So they have an old ipod and lawn darts... Its very odd seeing that stuff be called history.
This is an old pic from the Smithsonian Natural History museum. The geology wing, I think. It was supposed to be an example of gems refracting light or something.
On a side note, if you ever get the opportunity to go to a Smithsonian, fuckin do it. People, they had literal meteorites the size of sedans just sitting there with a sign on it encouraging you to touch it. I touched a fucking hunk of metal that had been careening through the void for a number of years my little monkey brain has trouble grappling with. Sorry. It left an impression. Go if you get the chance
Have you ever gotten one of these stuck around your weiner?
That was an expensive day.
the center hole of a compact disc is 15mm, or 0.590 inches.
Hopefully you meant the laserdisc?
So, of course I went down a rabbit hole on this. So far I'm unsuccessful, but I did find out the Smithsonian Institute has a searchable database of all their junk, which is neat.
Anyone with Mastadon or Twitter wanna take a swing at getting their attention? The pic was taken August 31, 2019. Definitely the Natural History Museum in DC, pretty sure it was the geology wing? I'm gonna email them, see what I get.
Also, for posterity, I'm gonna say it's either Doom or the White Album
there is a slight variation in the color of the disk about halfway through it. then ya subtract a bit for the geometry in that there is more data in the outer rings because they are wider. it writes from insider->out
I often buy CDs from used media shops to rip the music in FLAC format to add to my digital collection!
I finally got rid of my laserdiscs last year. My player broke years before and all the movies I had, I had blue rays of or could get on streaming. It was hard to justify toting around 20lbs of movies I couldn't play
Those are Mini DVDs. Totally different technology.
You're right though, Mini CDs also exist, but were much rarer.
Minidiscs are why every optical drive had a little divot for the smaller size. I only ever saw 2 disks in 30 years
Minidiscs were different, they're a proprietary Sony tech that was huge in Japan but never really took off in the US. That divot is for plain old small CDs.
I ran into about five, not including game cube games.
I think one of them was bionicle related