Welcome Guest ( Log In | Register )

What is discoloration that follows the grain of a CD?
post Jan 26 2012, 06:10
Post #1

Group: Members
Posts: 14
Joined: 7-November 11
Member No.: 95007

In advance I apologize for my lack of correct terminology. I noticed on some of the albums I own, both new and well used various spots of discoloration appear on the information side of the disc. It is incredibly subtle and seems to follow along the CD's grain or rings sometimes veering off slightly to make a larger splotch.

Despite this odd aesthetic appearance the albums play and rip fine. I'm curious if the discoloration is a result of the method used to press the CD or perhaps some sort of warping developed over time.

Go to the top of the page
+Quote Post
Start new topic
post Jan 26 2012, 09:53
Post #2

Group: Members
Posts: 631
Joined: 15-March 07
Member No.: 41501

Is it perhaps iridescence? Rather pretty rainbow colours, doubtless caused by interference somewhere? I just looked at a disk I bought new today, and on the label side there's a set of fairly faint quasi-rings (like rings with epicycles), and on the clear side beautiful strong radial rainbows.
Go to the top of the page
+Quote Post

Posts in this topic

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:


RSS Lo-Fi Version Time is now: 29th November 2015 - 18:14