Erismann and Kohler: Inversion goggles (2011) [video]

Broken link. You’re missing the video id in the URL.

Did you mean to post this: https://youtu.be/jKUVpBJalNQ

Also, 2011 does not seem to be the correct year. It may have been posted to YouTube in 2011 but it seems to be a digitization of a much older video with no apparent editing of the sort that would make me at least say that 2011 is the year for this.

(Unlike for example a documentary or other kind of production where original footage is combined with commentary from a later date.)