chaseadamFeb 24
Tech Tangents

Well I had a fun day today!

These are unaltered direct photos (other than mirroring) of a CED and a Laserdisc where using diffraction grating I was able to VISIBLY SEE video physically encoded on the disc!

I will be editing a video about this process but also did a quick write up about it on my wiki here with the direct sample images:

https://wiki.techtangents.net/wiki/Seeing_Media

Feb 21 at 11:56pmWeb
Show threadTech TangentsMar 7
And here's the video on this if you want to see it in action!
https://youtu.be/qZuR-772cks
Microscopes can See Video on a LaserDisc - Andonstar AD246S-P

YouTube
Show threadKoutsie Mar 7
@TechTangents just watched it, great fun!
Show threadKaiMar 7
@TechTangents I just reached the point where you said that in the vod, spooky :D
Show threadMaddy 🏳️‍⚧️ - ADHD-powered Mar 8
@TechTangents Ooooh, I've been looking forward to this! ​​
Watching now!
Show threadsenFeb 22
@TechTangents This is so cool! :D It makes _sense_ that it's possible when I think about how it all works, but it still seems like magic that you can just look at the raw video data like that!
Show threadRFeb 22

@TechTangents cool!

are CEDs not FM encoded on the disc the way LaserDisc is?

Show threadГригорий КлюшниковMar 9
As someone who has recently tinkered with analog video too much and has never seen a LaserDisc in person, it's wild to me that you can do this, and also that the structure of the video signal on these things is so clearly visible and recognizable even with just the naked eye.