In a war time scenario you can depend on low-tech radios to get a message across to the masses.
When the machines declare war on mankind and the EMP weapons kill off the new smart radios, you'll be trading bags of gold and water for your grandpas old fashioned radios.:)
If you have a robust spirit (patience), then you may enjoy an exciting carreer in tech support.
Many web hosting companies have online help desks that are ran 24/7. You are a smart fellow, so you might qualify to be at the top rung of tech support, getting all the truly interesting problems.
True holographic recording would reqire some major overhauling in the TV studios.
It is possible to make holograms from sterographic cameras, but you dont get the true 3D that you get in a normal hologram.
There is definitely a good argument for just using steroscopic vision in the first place. It is much cheaper and it possible now. I was at the SPIE Photincs West conference a few months ago and got to see several sterioscopic vision "TV sets" that were really impressive. About a dozen big names have prototypes already.
In reference to the parent article it should be noted that sterioscopic vision does not offer the immense data storage possibilities as holograms.
in TV you are sweeping a beem across a 2 demensional screen of phosphors row by row. You can see the image as it is shot to rows on the screen.
The hologram is different in that you dont get one frame of the 3D image until you have completely constructed an interference pattern on a two demensional holographic plate.
If you want the frame rate of the holographic image to be 30fps, then you have to create 30 complete 2D interference patterns on the holographic plate per second. You need a fancy holographic plate to pull this off.
In the 70's when 3D TV was thought to be the Holy Grail of holography people thought about using LCD as the holographic plate, but there were questions as to how successful the liquid crystal would be because of time it takes for the crystals to change thier alignment. So the idea of interlacing came into the picture.
But if the UCLA boy's fancy chemical has "color changes in billionths of a second" then maybe this whole issue is no longer an issue.
Silver halide and DCG holograms have finer resolutions than the Kodak film most people use. I wonder how the crystal compares. It would only need to create television quality.
Also if the refresh times of the crystal are not fast enough for comfortable viewing, you could do some 3D interlacing. (They do mention color changes in billionths of a second... perhaps they wont run into retensivity problems.)
Do 3D interlacing formats exist? Thay probably use them at SGI and Pixar... im behind the times.
One thing to note is that every frame of the 3D image would be a totally separte 2D interference pattern on the holographic plate. You cant just do a 2D interlace directly on the the holographic plate like you do in TV. That means that you will need to scan the 2 demiensional plate rather quickly, or do it in parallel. I would love to see how they implement the electric and magnetic fields to control the crystal.
Slashdot Mirror
Hopefully they have thought ahead with reguards to how they will dispose of this in the future.
I would have to have the worlds largest NiCad leak Cadmium into the Alaskan soil.
it is non-conductive
3 22 1&mode=thread&tid=193&tid=137
and there are people who have done it already to whom you can direct performance and other questions to.
http://slashdot.org/article.pl?sid=03/03/16/202
I like radios because they are simple and tough.
:)
In a war time scenario you can depend on low-tech radios to get a message across to the masses.
When the machines declare war on mankind and the EMP weapons kill off the new smart radios, you'll be trading bags of gold and water for your grandpas old fashioned radios.
If you have a robust spirit (patience),
then you may enjoy an exciting carreer in tech support.
Many web hosting companies have online help desks that are ran 24/7. You are a smart fellow, so you might qualify to be at the top rung of tech support, getting all the truly interesting problems.
http://slashdot.org/article.pl?sid=02/03/30/124
That is a good question.
True holographic recording would reqire some major overhauling in the TV studios.
It is possible to make holograms from sterographic cameras, but you dont get the true 3D that you get in a normal hologram.
There is definitely a good argument for just using steroscopic vision in the first place. It is much cheaper and it possible now. I was at the SPIE Photincs West conference a few months ago and got to see several sterioscopic vision "TV sets" that were really impressive. About a dozen big names have prototypes already.
In reference to the parent article it should be noted that sterioscopic vision does not offer the immense data storage possibilities as holograms.
My thinking is as follows:
in TV you are sweeping a beem across a 2 demensional screen of phosphors row by row. You can see the image as it is shot to rows on the screen.
The hologram is different in that you dont get one frame of the 3D image until you have completely constructed an interference pattern on a two demensional holographic plate.
If you want the frame rate of the holographic image to be 30fps, then you have to create 30 complete 2D interference patterns on the holographic plate per second. You need a fancy holographic plate to pull this off.
In the 70's when 3D TV was thought to be the Holy Grail of holography people thought about using LCD as the holographic plate, but there were questions as to how successful the liquid crystal would be because of time it takes for the crystals to change thier alignment. So the idea of interlacing came into the picture.
But if the UCLA boy's fancy chemical has "color changes in billionths of a second" then maybe this whole issue is no longer an issue.
Silver halide and DCG holograms have finer resolutions than the Kodak film most people use. I wonder how the crystal compares. It would only need to create television quality.
Also if the refresh times of the crystal are not fast enough for comfortable viewing, you could do some 3D interlacing. (They do mention color changes in billionths of a second... perhaps they wont run into retensivity problems.)
Do 3D interlacing formats exist? Thay probably use them at SGI and Pixar... im behind the times.
One thing to note is that every frame of the 3D image would be a totally separte 2D interference pattern on the holographic plate. You cant just do a 2D interlace directly on the the holographic plate like you do in TV. That means that you will need to scan the 2 demiensional plate rather quickly, or do it in parallel. I would love to see how they implement the electric and magnetic fields to control the crystal.
www.photologie.net has a geat walkthrough for laser pointer holograms with lots of pictures.
It covers adding more power to the pointer as well and some details for opening the caseing without damageing it.
Bust out your Dremel tool and potentiometer, and use the fish cuz its in French.