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Old 02-22-2010, 03:34 PM
dobieman dobieman is offline
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Things you can do with 3D glasses

So...is it true that if you wear the 3D glasses from "Avatar" upside down and backwards you can see through clothing? And should a person be verrrrry careful at whom they are peering when they try this? (For instance, one might not want to test this out on Ed Asner or Rush Limbaugh as a first choice.) And what other visual miracles can these glasses perform? (I would suggest they can be used to view Sarah Palin's thought centers but I don't believe they have magnifying properties.)
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Old 02-22-2010, 03:56 PM
Fake Tales of San Francisco Fake Tales of San Francisco is offline
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I'm having trouble wrapping my mind around how it would be possible for 3D glasses to see through clothes (And specifically fabric? Or any thin material?) Where did you hear this? It sounds like someone is having you on.
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Old 02-22-2010, 03:58 PM
BrandonR BrandonR is offline
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Are you sure you meant to post this in GQ?
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Old 02-22-2010, 04:04 PM
NinetyWt NinetyWt is offline
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Are you sure you're dobieman and not doobieman?
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Old 02-22-2010, 04:09 PM
Chronos Chronos is online now
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You can do some neat tricks with the glasses (especially if you have multiple pairs), but seeing through clothing is not one of them. For starters, try just arranging multiple lenses at various angles and orientations one in front of the other. Then, look at a computer screen or digital watch through them, or at a rainbow.
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Old 02-22-2010, 04:32 PM
Baracus Baracus is offline
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It seems like walking around wearing 3-D glasses on upside-down and backwards would significantly decrease your chances of seeing anybody naked.
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Old 02-22-2010, 04:35 PM
Colibri Colibri is online now
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Since this does not seem to be a factual question, it's better suited for MPSIMS than GQ.

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Old 02-22-2010, 04:48 PM
Hampshire Hampshire is offline
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When I wear mine I can go outside in a t-shirt and shorts in below freezing temperatures and not get cold. Because they are "polarized" the will keep you warm in polar like temperatures.
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Old 02-22-2010, 04:54 PM
garygnu garygnu is offline
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You can cut out a lens and use it for a craptastic version of a polarized lens filter.
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Old 02-22-2010, 05:18 PM
Larry Mudd Larry Mudd is offline
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You can use the filters to polarize emitted light from two sources placed close together to create a 3D shadow projector. This creates the eerie effect of a solid, 3D shadow standing behind the wall, reaching back at you as you reach for it. (You have to be wearing another pair of 3D glasses to see the effect, naturally.)
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Old 02-22-2010, 06:29 PM
Chronos Chronos is online now
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Quote:
You can use the filters to polarize emitted light from two sources placed close together to create a 3D shadow projector. This creates the eerie effect of a solid, 3D shadow standing behind the wall, reaching back at you as you reach for it. (You have to be wearing another pair of 3D glasses to see the effect, naturally.)
Ooh, I've got to try this now!
  #12  
Old 02-22-2010, 07:17 PM
dobieman dobieman is offline
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It's a bit of a social test, eh wot?

Quote:
Originally Posted by Fake Tales of San Francisco View Post
I'm having trouble wrapping my mind around how it would be possible for 3D glasses to see through clothes (And specifically fabric? Or any thin material?) Where did you hear this? It sounds like someone is having you on.
I'm glad someone responded as above and so quickly. See, I live in Alaska, sadly the homeplate of Sarah Palin. She's been making quite a bit of money lately going about spewing the most inane sort of drivel one could imagine yet she still has a good following up here not to mention her own spot on Fox news. I was hoping by posting a message that would be in keeping with her sort of thinking (if you think this was far out consider she quite fervently believes humans and dinosaurs co-existed only 6,000 years ago) I could roughly gauge the strength of healthy skepticism in the American public. Hence, as I said I am glad to see it still exists.
But you have to admit, in and of itself it would make a neat rumor to get started, possibly as good as some coming out of the 60's and 70's!
I will rest easier tonight free from nightmares of a President Palin. (And I'll read with interest the genuine alternative uses for those glasses. I couldn't see popping mine into the "recycling" bin at the theater after having just paid $2 for them, especially with all the 3D movies coming up that will utilize them.)

Last edited by dobieman; 02-22-2010 at 07:18 PM.
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Old 02-22-2010, 07:34 PM
dobieman dobieman is offline
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One possible use...stress "possible"...I was wondering about is as cheap sunglasses. Do they polarize sunlight the same way as sunglasses which are made and advertised as having that effect, and do they do it to the same strength? Or would I just be quietly frying my retinas if I tried this?
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Old 02-22-2010, 09:09 PM
Emily Litella Emily Litella is offline
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I saw Avatar a couple of weeks ago with friends and the glasses came with the price of admission. I saved mine too and when I got home I looked through them a few times, moved them around in different directions but I didn't notice anything special about them.
I went again with my son yesterday to a matinee and bought the tickets ahead of time online. When I gave them to the ticket taker he told us what theater number it was playing in and to enjoy the show. I asked if we supposed to get glasses and he said yeah, they're five bucks each. I gave him one of those squinty eyed "huh"? looks and he laughed and said just kidding and handed over a couple of pairs. I wonder if he actually made money off people doing that. He looked a little shifty. I put both my pairs in the recycling bucket after the movie. (I did have the old pair with me and for a split second I was thinking I just saved five bucks.) Watch, they'll be selling on eBay for $100 a pair five years from now.
So did you have to pay $2.00 for yours, or was the admission price higher than usual? They will only work as sun glasses if you constantly keep your line of sight at a 90 degree angle to the sun. - just kidding, I really don't know.
I don't think Sarah Palin will be elected POTUS, but if it does happen, come to New Jersey because I'm 99% sure we'll be seceding from the Union.
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Old 02-22-2010, 10:41 PM
BigT BigT is offline
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Well, I'm sure you could design clothes that would be nearly invisible wearing polarized glasses, but I don't think anything is designed that way.

But wearing them upside down and backwards? How can you even do that?
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Old 02-22-2010, 11:39 PM
Colibri Colibri is online now
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Quote:
Originally Posted by dobieman View Post
I was hoping by posting a message that would be in keeping with her sort of thinking (if you think this was far out consider she quite fervently believes humans and dinosaurs co-existed only 6,000 years ago) I could roughly gauge the strength of healthy skepticism in the American public. Hence, as I said I am glad to see it still exists.
[Moderator Note]

For future reference, don't post questions you know are ridiculous in General Questions. We try to keep that forum for serious factual questions. If you want to do this sort of thing in the future, start your thread in MPSIMS.

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  #17  
Old 02-23-2010, 02:16 AM
dobieman dobieman is offline
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Regular admission to the matinees of 2D "Avatar" is $7.75 until 5 PM then everything goes to $9.75 with the exception of 3D "Avatar" which is $10.75 matinee. Not sure if it increases after 5 PM but have heard rumors of $14. We have only the one cinema up here in Fairbanks, Regal Cinema, though it has 16 theaters in it. It's not Imax-equipped but at least we now have 3D (and just in time for "Alice in Wonderland").
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Old 02-23-2010, 02:17 AM
dobieman dobieman is offline
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Capice. Still figuring out my way around the various threads and your direction helps.
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Old 02-23-2010, 02:23 AM
dobieman dobieman is offline
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As to Sarah achieving POTUS...were she to do so what makes you think there will be a Union left from which to secede? Likely, she'd immediately declare war on Canada and all the states that went for Obama in '08.
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Old 02-23-2010, 08:21 AM
Baracus Baracus is offline
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Quote:
Originally Posted by dobieman View Post
One possible use...stress "possible"...I was wondering about is as cheap sunglasses. Do they polarize sunlight the same way as sunglasses which are made and advertised as having that effect, and do they do it to the same strength? Or would I just be quietly frying my retinas if I tried this?
The polarization isn't so much the issue as whether they offer any UV protection or not. As far as I can tell they do not, so you would not want to wear them as sunglasses. I have heard that wearing sunglasses without UV protection is actually worse for your eyes than no sunglasses at all.
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Old 02-23-2010, 08:34 AM
Mangetout Mangetout is online now
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Originally Posted by BigT View Post
But wearing them upside down and backwards? How can you even do that?
Start by tearing off your own head...
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Old 02-23-2010, 09:37 AM
ethelbert ethelbert is offline
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Start by tearing off your own head...
No, no. Start by tearing off Sarah Palin's head!
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Old 02-23-2010, 12:48 PM
Ranchoth Ranchoth is online now
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Quote:
Originally Posted by Larry Mudd View Post
You can use the filters to polarize emitted light from two sources placed close together to create a 3D shadow projector. This creates the eerie effect of a solid, 3D shadow standing behind the wall, reaching back at you as you reach for it. (You have to be wearing another pair of 3D glasses to see the effect, naturally.)
Can we...get some detailed instructions for this one, please? With diagrams, if at all possible?
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Old 02-23-2010, 01:44 PM
Larry Mudd Larry Mudd is offline
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Quote:
Originally Posted by Ranchoth View Post
Can we...get some detailed instructions for this one, please? With diagrams, if at all possible?
This is not exactly as I did mine, but the principle is the same and there ain't much to it, to be honest.

The main thing is to make sure you don't have any leaky light, and that it's all going through the filters. You will want to be able to adjust the spacing between the lamps, to get the parallax right at whatever distance your rig is from the projection surface.
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Old 02-23-2010, 03:37 PM
muldoonthief muldoonthief is online now
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If you put them on upside down and/or hold them up backwards while you're watching the movie, you can get the 3D effects to reverse - things that are supposed to look close now look far away. Experiment a bit - of the 3 possible "wrong" positions I forget which one gave me that result. It's pretty strange, since the visual clues (e.g. things that are big are close) no longer match the 3D effect.
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Old 02-23-2010, 04:17 PM
panman_1960 panman_1960 is offline
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Maybe attach a plastic nose and fake moustache to them so you can inconspicuously follow someone without them knowing it's you!

You could also take one of the lenses out and see in 2-1/2 D!

I also heard that they work really well on those 'Ghost Tours' in St. Augustine and New Orleans. You can see the orbs and spirits in 3D!

later, Tom.
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Old 02-24-2010, 10:13 PM
brujaja brujaja is offline
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Gee, dobieman, this was already moved to MPSIMS by the time I read it, so I didn't catch on that you were hoping to be taken as a serious inquirer. I thought it was one of those ridiculous-claims-threads, like the "drinker-of-a-particular-whiskey-has-discovered-perpetual-motion-in-his-spare-time" threads.

You know: "If you are wearing 3D glasses when you meet your maker, you will experience the Holy Trinity as a Sacred Ennead."

(Q. What did Adam see when he put on 3D glasses?
A. The 3 faces of Eve.)

(If you drink 2 "V-8"s while wearing 3D glasses, will you be a 6DV8?
---do the math! say it out loud!)
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Old 12-05-2017, 03:13 PM
shinnen shinnen is offline
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Hi,
I've found that the 3D glasses block out most visible light, if you put the two sides (red and cyan) together.
I found this out while trying to find a filter that will cut out the residual visible light from my infra-red camera.
...... john
  #29  
Old 12-05-2017, 03:34 PM
CalMeacham CalMeacham is offline
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the 3D glasses from Real3D movies aren't simple linear polarizers -- they're linear polarizers PLUS circular polarizers (or linear polarizers plus quarter wave plates) You can place the inside (viewer side) of one against the inside of another pair and rotate them to get the pair to "cancel out" and get darker and lighter as you rotate them relative to each other, but if you place the outside of one against the outside of another and rotate, this won't happen. Nor if you place th outside of one next to the inside of another.

If you flip one lens so that the inside is away from your eye, you will be able to rotate it and look for linearly polarized light reflecting from surfaces. but if you flip it around and place the inside towards your eye you can't do this. You could, I suppose, use it that way to look for circular polarized light in nature, but I don't know of too many examples -- mantis shrimp exoskeletons arfe supposed to reflect circularly polarized light, though.
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Old 12-05-2017, 08:15 PM
Senegoid Senegoid is offline
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Back in college, a friend and I considered designing a sundial with a digital read-out. The idea was, by stacking several very-carefully-designed polarizing lenses, we could produce a composite lens that would transmit only incident light coming from very specific directions. As the sun moves across the sky, different patterns of light would be transmitted through the stack of lenses. These varying patterns of light would be the digits of the read-out, showing the time of day.

No, we didn't actually get very far with it. It was just an idea.
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Old 12-05-2017, 08:35 PM
CalMeacham CalMeacham is offline
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Quote:
Originally Posted by Senegoid View Post
Back in college, a friend and I considered designing a sundial with a digital read-out. The idea was, by stacking several very-carefully-designed polarizing lenses, we could produce a composite lens that would transmit only incident light coming from very specific directions. As the sun moves across the sky, different patterns of light would be transmitted through the stack of lenses. These varying patterns of light would be the digits of the read-out, showing the time of day.

No, we didn't actually get very far with it. It was just an idea.
I had a similar idea. I got as far as plotting the sun's movement across the sky throughout the year using a toy ball and rubber bands, but never took it further.
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