MLA Citation: Bloomfield, Louis A. "Question 427"
How Everything Works 23 Jul 2018. 23 Jul 2018 <http://howeverythingworks.org/print1.php?QNum=427>.
427. To what extent are laser disc players similar to CD players?
Optically, they are identical. However, the laser disc player uses an analog recording technique (non-digital) to recreate the video signal. I think that the lengths of ridges (or perhaps pits) in the aluminum surface are used to control the analog signal strength.

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