Speaker 1: Brought to you by the reinvented two thousand twelve camera.
Speaker 1: It's ready. Are you get in touch with technology? With
Speaker 1: tech stuff from how stuff works dot com. Hi, everybody,
Speaker 1: welcome to the podcast. My name is Chris Pullette. I'm
Speaker 1: an editor here at How Stuff Works. Sitting next to
Speaker 1: me in all three dimensions as usual as senior writer
Speaker 1: Jonathan Strickland. I'd like to point out, it's actually four dimensions.
Speaker 1: The dimension of time is also in play. Oh, I
Speaker 1: was just thinking, you know, height was just not in there. Oh,
Speaker 1: burn not like I'm taller than it's about to say.
Speaker 1: I think I'm actually a little taller than you are.
Speaker 1: So moving right into our topic today. We we touched
Speaker 1: on this on a recent podcast when we talked about
Speaker 1: c E S and then we realize that, you know,
Speaker 1: three D technology. It's something that has been around for
Speaker 1: for many decades actually, but it's starting to come back now.
Speaker 1: It's like it seems weird. It's like every like the
Speaker 1: nineteen fifties it got really big for a little while
Speaker 1: and then it kind of died away. And then in
Speaker 1: nineteen eighties it got big for a little while, and
Speaker 1: then it kind of died away. And this looks like
Speaker 1: it's another one of those, um those moments sort of
Speaker 1: like the Yo Yo where it just comes back in
Speaker 1: vogue and who knows, maybe this time it's here to stay. Well. Um, yeah.
Speaker 1: We we have an article on the site how three
Speaker 1: D glasses worked that was written by our site founder
Speaker 1: Marshall Brain and it's it's really fascinating. The according the article,
Speaker 1: the Power of Love was the first movie to be
Speaker 1: done in three D and that was it's a curious thing.
Speaker 1: Thank you, thanks for the news. So, you know, we're
Speaker 1: coming up on a century of three D you know,
Speaker 1: video technology, which is uh, you kind of think about it.
Speaker 1: I always thought of it as a fifties and sixties
Speaker 1: singer and it's been around for quite some time. And
Speaker 1: you sit there and you think about that, like, okay,
Speaker 1: so if it's almost a century old, why is it
Speaker 1: still relatively rare? Um As it's a pain in the
Speaker 1: neck to actually make it work, right, and I'm bring
Speaker 1: on the eyes as well as it turns out. Yeah,
Speaker 1: that's one of the problems is that it's there's no
Speaker 1: for longest time, there was no real easy way of
Speaker 1: doing this that didn't result in after you know, maybe
Speaker 1: watching something for about forty minutes feeling like your eyeballs
Speaker 1: were on fire. Um, it's a little better now, but
Speaker 1: we'll we'll we'll get to that. First. We should kind
Speaker 1: of talk about why we're able to perceive why or
Speaker 1: why three D is important, and how we're able to
Speaker 1: perceive it. It all goes down too, comes down to
Speaker 1: binocular vision. You know, I have a pair of binoculars
Speaker 1: and it doesn't look like I'm looking in three D. Right,
Speaker 1: that doesn't know what it means. So we're talking about
Speaker 1: using both eyes to see objects and then perceive depth
Speaker 1: using both of your eyes, there's this, Um, what's It's
Speaker 1: what's called parallax. It's where you're looking at objects and
Speaker 1: because your eyes are not located in the exact same
Speaker 1: spot on your head, go figure, Um, you can actually
Speaker 1: your brain uses the difference in the angles that you're
Speaker 1: perceiving to create the perception of depth. So if you
Speaker 1: were to close one eye, or if you were to
Speaker 1: lose an eye, uh, you would not be able to
Speaker 1: perceive depth the same way someone with two eyes can.
Speaker 1: You could still do it. Um, You mainly pick it
Speaker 1: up from visual cues at that point, and your your
Speaker 1: perception is not as accurate. Most humans have pretty accurate
Speaker 1: depth perception to at least up to twenty feet or so.
Speaker 1: But if you only had one eye, then you would
Speaker 1: you know, some things that you might think, oh, well,
Speaker 1: that's closer to me than that other object over there.
Speaker 1: You might be surprised to find out hoops, I was
Speaker 1: wrong because you didn't have this the second eye to
Speaker 1: you know, to verify the information. So three D movies,
Speaker 1: three D images, uh, they have to be able to
Speaker 1: create this sense of of parallax in order for you
Speaker 1: to to perceive them as you know, three dimensional as
Speaker 1: opposed to two dimensional to give you that illusion of depth.
Speaker 1: You know, like a view master for example, exactly takes
Speaker 1: advantage of that because it shows you slightly different versions
Speaker 1: of the same image, right, which creates the illusion of death.
Speaker 1: And that's how those red and blue three D glasses work, right,
Speaker 1: It's called anaglyph images um, which uses red in a
Speaker 1: different color rights usually blue, but could be green or yeah,
Speaker 1: it's usually it's usually red and blue. Those are the
Speaker 1: classic three D glasses that a lot of us think
Speaker 1: about when we when we hear the three D glasses thing. Um,
Speaker 1: So you you have an image that you're showing on
Speaker 1: a screen, and it's got to say, kind of like
Speaker 1: a reddish overlay on top of it, and then you
Speaker 1: have the identical image superimposed or are shown just slightly
Speaker 1: off to the side. Looks a little weird if you're
Speaker 1: not wearing the glasses, which is usually in a blue
Speaker 1: or perhaps green overlay. And then you have glasses with
Speaker 1: corresponding lenses. Now, the red lens happens to block the
Speaker 1: red light. It absorbs it straight through. You don't see it.
Speaker 1: You just see the blue and the blue it it
Speaker 1: lets through the red light. And uh, your your eyes
Speaker 1: see these two images separately, and your brain puts the
Speaker 1: information together to create the three D image. So your
Speaker 1: brain is doing all the work really uh. And once
Speaker 1: they figured out, hey, if we just put these two
Speaker 1: images side by side really close together and do different
Speaker 1: colors and have each I perceive a different color, then
Speaker 1: we can create the illusion of depth. Uh. Then that's
Speaker 1: that's when the three D movie craze really took off. Yeah,
Speaker 1: that's um, that's why if you take off the three
Speaker 1: D glasses and look at the movie one of the
Speaker 1: classic and a glyph style three D Uh, movies. You'll
Speaker 1: notice that there's a red version of the image and
Speaker 1: there's a blue version of the image, and it looks
Speaker 1: like it's out of register. Like if you've seen a
Speaker 1: color picture where the printing was just off and everything
Speaker 1: seemed to be shifted in one direction and it's just
Speaker 1: the red or just the yellow. Um, that means that
Speaker 1: the printers didn't line up. The College's sort looks like
Speaker 1: that because one of them will be just a little
Speaker 1: to the left and one will be just a little
Speaker 1: to the right, and you're gonna what's up with this? Well,
Speaker 1: because they're slightly different, it allows your brain to make
Speaker 1: up that there's a three D version of that. But
Speaker 1: that's not how the newer version of three D works.
Speaker 1: The newer version uses polarized lenses. That's right, now, That's
Speaker 1: that's interesting because polarized lenses is all about the angle
Speaker 1: of the light waves, right, true, But it achieves the
Speaker 1: same effect because um, the images are slightly different in direction,
Speaker 1: and by shifting the polarity and using the polarized glasses
Speaker 1: it uh. It also fools your eyes and you don't
Speaker 1: have to have red and blue version of the the
Speaker 1: image on the right. They look more like, you know,
Speaker 1: kind of dorky sunglasses. Um. In general, I guess you
Speaker 1: could really if you wanted to make a very stylish pair,
Speaker 1: but every pair I've ever seen looks kind of geeky. Well,
Speaker 1: if you're gonna go watch Captain EO, it doesn't really
Speaker 1: matter anyway, because you know, the glasses sort of went
Speaker 1: with the movie anyhow. Don't be talking smack about my
Speaker 1: Michael Jackson. Um. So yeah, So these polarized lenses in
Speaker 1: the same sense that the red and blue only allow
Speaker 1: the blue and red respectively. Uh, those light waves through
Speaker 1: the polarized lenses are kind of the same way. They're
Speaker 1: aligned so that the light uh, the the angles of
Speaker 1: the light waves will only go through one side or
Speaker 1: the other. And usually you have two projectors projecting at
Speaker 1: the same time. They're projecting. Each one's projecting a different
Speaker 1: of what's projecting the same image at the same time,
Speaker 1: but in a different angle of light waves. So you're
Speaker 1: getting both sets of images at the same time, but
Speaker 1: only one eye receives each image and then your brain
Speaker 1: does the work again. So it's based on a very
Speaker 1: similar principle as the red and blue. Now I've heard
Speaker 1: that people tend to experience less eye strain using this
Speaker 1: method than they did when they use the red and
Speaker 1: blue Um. Have you ever seen a three D movie
Speaker 1: like a full three D movie with the red and
Speaker 1: blue glasses like a full length feature film. I haven't
Speaker 1: ever watched anything that long. The longest thing I have
Speaker 1: in three D is Captain EO. Now that you mentioned, Okay,
Speaker 1: well I have um as and this is one of
Speaker 1: my childhood memories. So sit back and grab a coke.
Speaker 1: I went to see Jaws in three D. Jaws three
Speaker 1: in three D and the theater with my dad. Uh. Hi,
Speaker 1: Dad and dad and I. Um we sat there and
Speaker 1: watched this movie and by the end of it we
Speaker 1: each had splitting headaches. And uh. Also, by the way,
Speaker 1: just so you know, terrible movie. Uh. The only three
Speaker 1: D effect that was really effective was when someone held
Speaker 1: a syringe out towards the screen in the way that
Speaker 1: absolutely no one does and then pushed the plunger. Um.
Speaker 1: That was actually pretty effective. The shark stuff not so
Speaker 1: much at any rate. But the terror didn't stop at
Speaker 1: the edge of the screen. Oh my gosh, you knew
Speaker 1: the tagline so um So anyway, anyway, it was it
Speaker 1: was it definitely did cause eye straight Now I've warned
Speaker 1: the polarized glasses uh for shure demonstrations, but nothing for
Speaker 1: really any length of time. So I'm kind of curious
Speaker 1: to see if if it really, if it lives up
Speaker 1: to the hype. Um. And of course there's one other
Speaker 1: kind of three D glasses we can talk about, the
Speaker 1: active glasses. Oh, yes, those are the ones that you
Speaker 1: actually saw at CES. Yeah, I saw a couple of
Speaker 1: different instances of active glasses. Now, with these other versions
Speaker 1: we're talking about, you usually, like I said, have two
Speaker 1: projectors projecting the images at the same time. Um. Really,
Speaker 1: the you know, that's the best way to show these images. Now,
Speaker 1: with active glasses, you can have one projector showing or
Speaker 1: one screen whatever showing these images. Um altogether. But the
Speaker 1: difference is in this case, rather than the glasses just
Speaker 1: being a piece of paper or plastic with the lenses
Speaker 1: in front of your face, the glasses are doing all
Speaker 1: the work instead the projectors. Right, The glasses have a
Speaker 1: shutter where they turn on and off a polarization effect,
Speaker 1: and they do it at such a fast speed that
Speaker 1: you would never be able to to see it. You can't,
Speaker 1: you know, consciously notice that they're shuttering on and off.
Speaker 1: Um I mentioned that the vidio ones I saw shuttered
Speaker 1: at a sixty hurts refresh rate for each eye. So
Speaker 1: the screen, what it's doing is it's alternating the image
Speaker 1: at the same rate that your glasses are shuttering on
Speaker 1: and off, and you're getting these two different images, uh
Speaker 1: at at a rate of speed that's so fast that
Speaker 1: your brain essentially thinks it's the same it's happening at
Speaker 1: the same time. You know from your perception it's all
Speaker 1: happening at the same time, even though in reality it's
Speaker 1: switching back and forth at this incredible rate of speed.
Speaker 1: So the effect again is that your brain puts it
Speaker 1: together and says, hey, there's depth there. It's not just
Speaker 1: a flat surface. And the effect really is pretty interesting,
Speaker 1: and that you know, you look at the screen and
Speaker 1: it looks like you can actually see beyond just that
Speaker 1: flat surface. Um it's it's there's some effect of the
Speaker 1: you know, oh, it's coming out toward me. But that's
Speaker 1: kind of minor in comparison to just this amazing depth
Speaker 1: of vision that you get in these screens. And um
Speaker 1: you might wonder like, well, okay, so we've got all
Speaker 1: this technology. Where's the big deal? Well, Hollywood is really
Speaker 1: kind of experimenting with this technology recently. There's been there's
Speaker 1: been quite a few movies that have come out with
Speaker 1: that feature this three D tech and UH, and not
Speaker 1: only just movies, but also sporting events and concerts that
Speaker 1: have have shown up either in theaters or on television
Speaker 1: that use three D and UM. Part of that is
Speaker 1: made possible by the use of digital video technology. I mean,
Speaker 1: film really didn't give us the opportunity to use it
Speaker 1: as much as digital does, so that just makes it,
Speaker 1: you know, easier and cheaper for the studios to do. UM,
Speaker 1: which is you know, probably a good thing. And UM
Speaker 1: actually is a good transition in the next part of
Speaker 1: what I was going to bring up, although I think
Speaker 1: you may have answered my option because there's so much
Speaker 1: three D at c e S. It was one of
Speaker 1: the big themes of this year's show. UM, I was
Speaker 1: going to ask you if you thought three D was
Speaker 1: the next big living room phenomenon. But from what I understand,
Speaker 1: most TVs that use three D technology use the anaglyph method,
Speaker 1: use the red and blue glasses and if it's a
Speaker 1: big eye stream and maybe it's that such. I mean,
Speaker 1: people are not going to sit there and watch TV
Speaker 1: for four hours a night and get splitting headaches. If
Speaker 1: you if you wanted to use uh like the active glasses,
Speaker 1: you would need a special display or special television um,
Speaker 1: something that's called three D ready. And there are only
Speaker 1: a few sets, relatively few sets out there that are
Speaker 1: three D ready, either as computer monitors or television sets
Speaker 1: like the like mis Mitsubishi laser View. I keep bringing
Speaker 1: it up, but that's one of the ones that's three
Speaker 1: D ready. Um. If you don't have the television that's
Speaker 1: capable of doing that, then you're kind of stuck. You've
Speaker 1: got a really expensive pair of glasses that don't really
Speaker 1: work very well make you look like a big dork.
Speaker 1: So um, hey congrats. But if you do have one
Speaker 1: of those sets, then you can take advantage of this technology. Now,
Speaker 1: of course, that means you also have to find content
Speaker 1: that was optimized for that technology. It's not gonna just
Speaker 1: work on anything. It's not like you could turn on
Speaker 1: any television like, oh way, yeah, I get full House
Speaker 1: in three D um. That's that might have been scarier
Speaker 1: than the Jaws, but they're there. There's a lot of
Speaker 1: three D stuff that's just starting to uh to creep in. Like,
Speaker 1: for example, this year's Super Bowl, which was you know,
Speaker 1: absolutely amazing. Um, we say as we record a few
Speaker 1: days before that, but um, from what I from what
Speaker 1: I understand, Pepsi and UH and Universal both took out
Speaker 1: ads for the Super Bowl. Um, Pepsi for Sobey's Life
Speaker 1: water and UH the movie Monsters and Aliens from Universal
Speaker 1: both had three d ads and UH, NBC was so
Speaker 1: excited about that. They're even advertising the ads that they're
Speaker 1: coming up so you can actually get the glasses and
Speaker 1: watch the three d ads in time. It's getting a
Speaker 1: little too meta for me now. The Monsters Versus Aliens.
Speaker 1: That's a movie that's coming out later in two thousand nine,
Speaker 1: and actually in three it will be in three D. Yeah,
Speaker 1: it's it's a computer graphics animated film and I saw
Speaker 1: clips of that when I was at c E S.
Speaker 1: That was one of the demos they did with the
Speaker 1: three D technology and it looks pretty good. Um. There
Speaker 1: are several other movies that are coming out either this
Speaker 1: year or in coming years that are going to be
Speaker 1: using three D. That includes James Cameron's Avatar, not to
Speaker 1: be confused with the Nickelodeon Nickelodeon cartoon show which my
Speaker 1: wife loves. Hello wife. Uh there's uh, there's a rumored
Speaker 1: version of a Christmas Carol that maybe in three D.
Speaker 1: It's going to use the same creepy technology as Polar Express.
Speaker 1: I bet it was a Dickens to make. I'm sure
Speaker 1: it was. Then there's a There's How to Train Your
Speaker 1: Dragon Crude Awakening Alice in Wonderland, which is Tim Burton's
Speaker 1: take on the classic tail. Um Johnny Depp will be
Speaker 1: in that. I think he's the Mad Hatter if I'm
Speaker 1: not mistaken. Um, he should be if he's not. The
Speaker 1: next Trek film is supposed to be in three D Mastermind.
Speaker 1: Also the one that we Are you and I will
Speaker 1: be waiting for with bated breath. Yes, the remastered three
Speaker 1: D version of Star Wars. I saw clips of that
Speaker 1: while I was at c E S and it was
Speaker 1: one of the two times I came close to crying.
Speaker 1: Good tears are bad, Oh, just tears of joy to
Speaker 1: see to see the Karelian starship being chased by that
Speaker 1: star destroyer and it's looming at me right there. And
Speaker 1: then R two D two is right in front of
Speaker 1: my face. Oh man, okay, wait wait, I'm back. I'm back.
Speaker 1: So that's okay. It'll it'll be twenty more years before
Speaker 1: Orge Lucas decides on the final, final, final three D
Speaker 1: versions and you know, with the refinements in it, and
Speaker 1: then of course we have the video games that could
Speaker 1: come out. Um that Navidia is really pushing for. Navidias,
Speaker 1: the graphics processing card manufacturer, they have the g Force classes. Um,
Speaker 1: they have a whole list of video games that are
Speaker 1: already prepared to go to three D. I mean, everything
Speaker 1: is there. You just have to have the right display,
Speaker 1: the graphics chip and the glasses and then you're ready
Speaker 1: to go. And among the games that they say are
Speaker 1: optimized for this include Age of Empires three, Battlefield to
Speaker 1: Call of Duty, for Civilization for for you, said Meyer
Speaker 1: fans out there, Burnout Paradise, for you race card driving
Speaker 1: fans out there, World of Warcraft. Um, if you're a
Speaker 1: World of Warcraft fan, you're not listening to this. You're
Speaker 1: playing World of Warcraft, Half Life two, Left for Dead,
Speaker 1: roller Coaster Tycoon. Yeah, roller Coaster ty Coon. Okay, you
Speaker 1: know you may be laughing at that, but if you
Speaker 1: think about it. You know, that could be pretty pretty cool. Yeah.
Speaker 1: You get to ride the rights and you get to
Speaker 1: see your your your amusement park in three D. There's
Speaker 1: some pretty nifty things out there. So yeah, it's it.
Speaker 1: I think they're pushing for it to be the next
Speaker 1: big thing. Now here's the question. Are people going to
Speaker 1: adopt it? And specifically, are people going to be willing
Speaker 1: to spend money on it, especially in an economic downturn?
Speaker 1: Oh well, I imagine that this is the kind of
Speaker 1: thing that would cost a lot of money, even not
Speaker 1: in an economic downturn. Yeah, because this is not I mean,
Speaker 1: this is using brand new technology that is different from
Speaker 1: the technology would see in a standard LCD display right right.
Speaker 1: The glasses alone can cost you like two D bucks. Yeah,
Speaker 1: so that's that's before you even get a graphics card
Speaker 1: or the display or television. So it makes the three
Speaker 1: D super Bowl party kind of expensive. Yeah. I think
Speaker 1: the laser view was around seven grand. Um, So yeah,
Speaker 1: that's uh, that's an expensive toy. So it may be
Speaker 1: beyond our reach for a few more years. Time will tell.
Speaker 1: I mean, if enough early adopters do go out and
Speaker 1: buy this stuff, that will drive the price down, and
Speaker 1: then the rest of us can can enjoy stuff in
Speaker 1: three D as well. And of course you can still
Speaker 1: go to the movie theater and see a lot of
Speaker 1: these films in three D. I mean, even movies that
Speaker 1: weren't made completely in three D, you can sometimes see
Speaker 1: parts of it in three D. So now it's at
Speaker 1: least the film industry is really trying to push forward.
Speaker 1: I think that's partly in response to UM piracy. Actually
Speaker 1: when you think about it, because if you can't recreate
Speaker 1: the experience at home, you have to go to the
Speaker 1: theater to get the experience. But when you can recreate
Speaker 1: the experience at home, then they're trumped again. Yeah, you
Speaker 1: just pirate the heck out of it. Not that you
Speaker 1: would or I would, but you know, those nefarious people
Speaker 1: who are not our listeners because we're all well behaved,
Speaker 1: we're we're good ones in this in this podcast. Yeah, well,
Speaker 1: that's a good discussion. I do have one other thing
Speaker 1: to add. Oh yes, that would be listener mail. That
Speaker 1: was great. So uh so this listener mail comes from
Speaker 1: Mike Linderer from Grayling, Michigan, and Mike wanted to give
Speaker 1: us a few more UM suggestions. When we did our
Speaker 1: Tech Toys episode talking about the sort of things that
Speaker 1: keep us saying at work. He had a few more
Speaker 1: to suggest, so I was just gonna run through some
Speaker 1: of the ones that he listed. He listed Slacker, which
Speaker 1: is another internet radio style site. You can talk a
Speaker 1: little bit about that, right, Chris, you know, Oh yeah, yeah, Slacker. UM.
Speaker 1: Slacker sort of like a cross between last FM and
Speaker 1: UH and ANDORRA because you do get to select your
Speaker 1: stations UM. And when I say it's across, it's sort
Speaker 1: of tool wise the things you get to do with
Speaker 1: the songs UM, as far as tagging them and things
Speaker 1: like that. You have some more control, more so than
Speaker 1: you might in Pandora UM. But you have more control
Speaker 1: over the station like you would in last NFM. But
Speaker 1: it's it's one of very many. There are lots and
Speaker 1: lots of other stations out there, like Django is another example, UM,
Speaker 1: and just various radio radio one. Mama. You know, there
Speaker 1: are there are lots and lots of music sites out there,
Speaker 1: and each one of them is a little bit different.
Speaker 1: They offer something that you can't do with the others.
Speaker 1: Fine Tune is an example of that because you actually
Speaker 1: get to listen to a specific song, but you can
Speaker 1: only put you know, three You create playlists and you
Speaker 1: can only put three songs by a particular artist or
Speaker 1: three songs by on a particular album on your playlist.
Speaker 1: So there are still restrictions and things that might You
Speaker 1: might listen to one for a couple of hours ago.
Speaker 1: You know, this is driving me crazy. There restrictions on
Speaker 1: the site. And then you go in another, um, well
Speaker 1: this is cool. Oh, but there are these different restrictions,
Speaker 1: so and maybe something it might end up turning onto
Speaker 1: something like the whole Twitter Pounce plerk battle and you
Speaker 1: see which one ends up surviving. True, hopefully they all will.
Speaker 1: They all have something different that they bring in the party. Yep.
Speaker 1: And then some others that Mike mentions are he mentions
Speaker 1: line writer, which is, you know, it's kind of a
Speaker 1: game and kind of an art project thing. Have you
Speaker 1: ever seen this? I've seen it. I haven't used it myself.
Speaker 1: It's uh, I've tried to use it, but I'm a terrible,
Speaker 1: terrible artist, so I can't make the little guy ride
Speaker 1: his line for very long. He always ends up wiping
Speaker 1: out spectacularly and then falling for about you know, forty
Speaker 1: forty five minutes. So um, but it's it's for the
Speaker 1: people who are really talented. I mean there's some amazing
Speaker 1: line writer of courses that people have created that are
Speaker 1: really fun to watch. He also mentioned Homestyle Runner. Uh.
Speaker 1: This is actually kind of cool because we're talking about
Speaker 1: some some neighbors of ours in the way, the Brothers Chaps.
Speaker 1: I mean they they're here, they're Atlanta locals. And actually
Speaker 1: some of the people in the office know some of
Speaker 1: the know the Brothers Chaps. Um I do not. I've
Speaker 1: seen them perform live, but I don't know them. But yeah,
Speaker 1: that's a great, great site, very amusing. Uh mentioned jib
Speaker 1: Jab as well, also pretty funny site, very famous in
Speaker 1: the elections exactly. Uh mentioned the Darwin Awards, which can
Speaker 1: be entertaining. I do recommend that you cross reference the
Speaker 1: Darwin Awards with Snopes dot com because not every story
Speaker 1: on the Darwin Awards is actually true. And then the
Speaker 1: last one he mentioned was the Daily Onion, which we
Speaker 1: should mention is not necessarily safe for work, but very funny,
Speaker 1: extremely funny. So thanks, Mike. We really appreciate your email,
Speaker 1: and if you would like to write to us, you
Speaker 1: can write to us at tech Stuff at how stuff
Speaker 1: works dot com. We love hearing from you guys. If
Speaker 1: you want to learn more about three D technology, we
Speaker 1: have plenty of stuff up on the website that's at
Speaker 1: how stuff works dot com. And we'll talk to you
Speaker 1: again really soon for more on this and thousands of
Speaker 1: other topics. Is it how stuff works dot com, brought
Speaker 1: to you by the invented two thousand twelve cameras. It's ready,
Speaker 1: are you