h a l f b a k e r yThis ain't rocket surgery.
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Imagine!
You as Host ...
... inviting your consociates over for drinks
and introducing them to a most unique
decorative centerpiece.
The Fish-Out-Of-Water Aquatics Projector
is designed to cast actual holographic
images from out of the self-cleaning, fully
enclosed redundant circulation
tank above
the plane of its crystal clear, high impact
contact surface.
It works by way of a simple yet complex
light refraction technique. The tank itself is
internally lit and composed of two sealed
and diametrically opposed concave
reflective shells situated as facing each
other in recumbent fashion. The
uppermost
reflective shell is absent its pineal
segment,
from which the cast images appear. The
angle of vision is perfect for the illusion.
The Aquatic Table is positioned slightly
lower than the line of sight as your guests
are seated.
In their jovial and slightly inebriated state,
they will reach to retrieve coctails and
swear the fish have commandeered their
drinks!
Real image demo
http://www.explorat...al_image/index.html
Like so? [csea, Feb 08 2008]
(?) [csea] beat me to the link.
http://www.physlink...cIllusionSaucer.cfm
Ah well. Here's another. [2 fries shy of a happy meal, Feb 08 2008]
(?) Optic Mirage
http://scientificso....asp_Q_pn_E_3072381
Commercially available version [csea, Feb 08 2008]
[link]
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"Can someone change it back? There's a tadpole in my Martini" |
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One tiny problem - Water is opaque to IR frequencies. Therefore, when you shine bright lights through tanks of water it gets very hot. I used to do optical experiments, and to stop my experimental apparatus getting hot I had a tank of water between the 500W light and the apparatus, which worked fine until the water started to boil. |
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I used to have a little doohicky that did this (not with fish, but with anything else you could fit inside). For the effect to work, you had to stand in just the right spot. You also have to bear in mind the aperature is pretty small. You might see the occasional fish "float" past, but I doubt you'd see the whole aquarium. |
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Still, it's a neat idea and perhaps a compromise could be made by one-way mirroring the tank so you could still get this effect, but also see the fish through the sides. |
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Hippo: have you tried flourescent (glow
in the dark) lighting? My project is just a
showpiece; sounds like your
experimentation was more critical. |
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Phoenix: I think animal rights advocates
would have a cow if the tank wasn't
somewhat see through. Gotta keep it
fish friendly! |
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Well, I suppose the answer would be to use white LEDs - they put out hardly any IR but they weren't available when I was doing optics experiments. |
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You could have a table with seats only on one side. Then place part of the dome mirror system above the level of the tabletop, for a better view. But the hole in the middle isn’t bad either. |
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Sorry I gave you no fish for it. + |
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