ℂ𝕒𝕀𝕀𝕖π•₯π•₯𝕖 π•₯𝕒𝕑𝕖𝕀

Cassette tapesΒ areΒ madeΒ of a polyester type plastic film with a magnetic coating. The original magnetic material was based on gamma ferric oxide (Fe2O3). Circa 1970, 3M Company developed a cobalt volume-doping process combined with a double-coating technique to enhance overallΒ tapeΒ output levels. Cassette tapes are very useful to listen to your music anywhere and even on those…