0_Apprentice
My grandparents have phonograph records, do you know anything about that?
1_Wizard
a phonohraph record is an analog sound storae with medium in the form of a flat disc with an indscribed modulated spiral groove. ever had one?
0_Apprentice
No I don't think I have, when were these used?
1_Wizard
it was the primary medium for music reproduction until late in the 20th century. it had been around for nearly one hundred years i believe
0_Apprentice
Wow, do they know who invented them?
1_Wizard
im not sure but the sonographic record co existed with the phonograph cylinder from the late 188s and superseded it at around 1912. it was once considered advanced technology!
0_Apprentice
That's fascinating, now we have crazy stuff like mp3 and mp4 technology.