Projecting Light Off Of Thin Air

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Discussion Overview

The discussion revolves around the technology behind a device that projects images using air, specifically focusing on how it works, potential improvements, and experimental ideas for creating a fog screen for image projection. The scope includes technical explanations, conceptual exploration, and experimental applications.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Experimental/applied

Main Points Raised

  • Some participants speculate on the mechanism of the device, suggesting that it modifies air to create a visible vapor, similar to mist fountains.
  • One participant notes that the device uses lasers but clarifies that the images produced are not holographic.
  • There is a suggestion that ultrasonic water foggers might be relevant to the discussion, with one participant recalling their use of such devices.
  • A participant expresses interest in conducting an experiment to create a large-scale fog screen for image projection, proposing the use of a dehumidifier to collect vapor from the air.
  • Another participant reiterates the idea of using a dehumidifier for the fog effect in the context of their experimental plans.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the exact workings of the device or the feasibility of the proposed experimental ideas. Multiple competing views and hypotheses remain present in the discussion.

Contextual Notes

Some claims depend on assumptions about the technology and its operation, and there are unresolved questions regarding the effectiveness of using a dehumidifier for creating the fog effect.

SkepticJ
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What guesses do you have as to how http://www.io2technology.com/dojo/178/v.jsp works?
I wonder how hard it would be to use adaptive optics to stop the wavy motion of the image? Why does the image look like it is made of vertical strips? Looks like a photo went through a paper shredder. Upgrading it to show HD video and things with 3-D volume would tempt me to buy one if the price was right.
 
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Well, the technical 'scrip is necessarily vague, but they do hint at some of it:

"Air comes into the device, is modified then ejected and illuminated to produce the image. Nothing is added to the air so there isn`t any harmful gas or liquid emitted from the device, and nothing needs to be refilled. Operating the device will not change a room`s environment, air quality or other conditions. If a Heliodisplay were left running for a week in a hermetically sealed room, the only change to the room`s environment would be from the electricity used to run the device."

and then:

"Although the Heliodisplay uses lasers, the images are not holographic."

So, I'm guessing perhaps the air is modified to form a visible vapour, much like is being used in the glut of mist fountains that have come out recently. They look much like dry ice fountains, but they're not dry ice (it's a liquid chemical in a squeeze bottle).
 
DaveC426913 said:
So, I'm guessing perhaps the air is modified to form a visible vapour, much like is being used in the glut of mist fountains that have come out recently. They look much like dry ice fountains, but they're not dry ice (it's a liquid chemical in a squeeze bottle).

Are you sure you aren't thinking of ultrasonic water foggers ? I have a five disk one, pretty neat. I'm not totally sure how they work but I think they use cavitation.
 
Yup, that's what I was talking about.
 
I want to carry out this experiment, and can you gentemen help to join in idea if I can make it to a big area scale, in this event, do you think we can utilize the concept of a dehumifier, with the vapour collected from the air (or better if it is open air) to create the foggy effect to form a fog screen to project images onto it. Need your enlightment urgent.
 
I want to carry out this experiment, and can you gentemen help to join in idea if I can make it to a big area scale, in this event, do you think we can utilize the concept of a dehumifier, with the vapour collected from the air (or better if it is open air) to create the foggy effect to form a fog screen to project images onto it. Need your enlightment urgent.
 

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