Machina Dynamica New Dark Matter CD and Blu Ray tray treatment?

Well, given my limited background about how CD players work (as I am sure Geoff can attest given my questions to him via PM), I’ll take a stab at this answer.

The laser has a different wavelength range than the photodetector, wherein the photodetector can detect both visible and invisible light. As a result, the invisible light (UV and IR) is picked up by the photodetector, thereby obscuring the data stream attributed to the visible light. Presumably, this additional light info might not be corrected by the Reed-Solomon error detection/correction codes.

The NDM squares can absorb the invisible light, removing it from being detected by the photodetector. This improves the fidelity of the photodetector in capturing a better ratio of disc-related reflected light to unrelated reflected light, thereby enhancing the photodetector’s resultant signal to noise ratio. 

Has absorption of invisible light by these NDM squares ever been confirmed or it is just a postulate?

I think it’s called deductive reasoning. Something terribly lacking in most every day discussions.

Celander is close. Very close. Yet so far. 😁

Hint - If the laser wavelength was different than the photodetector wavelength the whole thing wouldn’t work. Both have nominal wavelength of 780 nm. 

Well, I derived all that from your website. So I guess you are equally far away.

(Deductive reasoning..)

PM me the quiz answer. I’ve shot my wad on this answer. No do-overs. Thanks, Professor.