Ghost
Posted in Art, Dream, Technology on June 7th, 2010 by Toby – Be the first to commentI dreamed last night about having regions of space copied onto other spaces. The same way I can include an “iframe” in a webpage to have a window onto any another webpage, in my dream there were these community spaces that existed simultaneously in multiple locations around the world.
When I woke up I started looking for technology to implement this, specifically 3D hologram technology. I found this video of Cisco doing an on-stage 3D telepresence demo:
I was thrown off when the physically present Cisco CEO says he can see the hologrammed guy in front of him. He can’t! He’s pretending that he sees the other guy standing next to him.
This is a video showing how the illusion works:
I had to watch a few times to figure it out.
Hint: the “foil” is a one-way mirror, which means it’s both reflective and transparent depending on where the light is coming from. It’s like looking through a glass window at night in pitch black: you see your reflection. But if there’s light coming from outside then you see the outside.
This “hologram” is the same technology that’s used in Disney’s Haunted Mansion ride during the Ballroom scene.

Patrons ride across the track, looking down at the ballroom.
There’s a huge one-way mirror between the patrons and the ballroom. The ghosts are underneath the ride track. The patrons see the faint reflection of the ghosts, making them look transparent. By turning the lights on and off, the ghosts seem to appear and disappear.
The hitchhiking ghosts use a similar effect.

Patrons face a mirror (actually a one-way mirror) and see their reflection. The ghost is behind the mirror, moving on a track in sync with the ride.
Mirrors are folds in space. I’m excited for emerging technologies that can fold and rearrange space into “hyperspace” — the way that it is done on the web, with doors and windows leading you to new spaces unconstrained by physical geometry.
I’m reminded of the psychogeographer Constant Nieuwenhuys who would cut up and collage together maps of European cities to envision his utopic city, New Babylon.

I have in mind several projects exploring this theme:
- Using mirrors to reverse gravity (interactive sculpture in progress)
- Treadmill surrounded by projections, allowing you to physically walk through Google Streetview
- Grids of cameras mounted to the ceiling of an indoor space, creating a live video “Google Map”

