Are holographs possible?

[jkrohn]

Are holographs possible? By holographs I mean those great 3-d standalone images we always see in movies. I thought they were, but cannot seem to find a picture of one anywhere : /

Jkrohn

[edwelly]

I know that 2-d holographes are possible but 3-d, hmmmm
---edwelly

[edwelly]

Try looking HERE for some info...
---edwelly

[strangerstill]

Sure you can, just look at your bank cards or credit cards. That's a holograph.

[flea]

hard or soft light?

Anybody watch red dwarf?

[thekingofpain]

National Geographic was the first publication to put a hologram on their magazine cover, it was in '84 and had 3 or 4 more hologram covers in the later 80's--- one was of a human skull, I have it somewhere around here...

[jkrohn]

I'm probably using the wrong term. But I don't mean hologram like on baseball cards or magazine covers or any of that stuff. Like in a movie where they pop up this 3-d globe using only a central light projector located say below it. Where it doesn't need a medium such as a wall or whitescreen to present itself on. Just sitting there in thin air.


Hope this clears it up.
Jkrohn

[RaeRae]

Yes, it is possible. I remember an arcade game made by SEGA that used to be holographic, about some cowboy or something. No medium like a wall, but the images had to appear in the center of the game board, sort of. It's hard to explain, but there was a back to the game board and a bottom, but the front was open to view. The images appeared in the center and were very much 3-D. It was really kewl, even by today's standards.

RaeRae

[Richard Cranium]

I can't be sure,, but I think that intersecting Laser light of a specific frequency can cause a divergence of rays.

i.e. at Disney World in the Spook house there is a witch in mid-air that laughs at you and appears to be as real as you can get, I'd heard the effect was created by the laser theory above, screenless, don't quote me on that

[Invader Zim]

I remember that SEGA game...I hated that game! It looked real neat but there was absolutely NO control there...I must've put 5 bucks into that thing, and I KNEW there was a guy coming up behind me to shoot me (or whatever it was right off the bag) but I kept pushing the joystick and hitting the button and nothing would ever happen, so I'd hit the 'time travel cube' button or whatever it was, it'd take me back a few seconds, make me avoid getting killed and the next one would do exactly the same thing...anyway, I don't know if that was a real hologram or if it was something like a curved mirror (you ever seen those "floating coin" deals, with the two curved mirrors, the one on top has a hole in the center, you put a coin, or a G.I. Joe, or a whatever on the bottom and the curvature of the 2 mirrors cancels each other out so the image isn't distorted, but it appears as if it's floating in midair right where the hole in the upper mirror is...)