Every person who re-discovers this technique must come up with their own name for it! Holo-diagrams, mechanical holograms, abrasion holograms, scratch-holograms, incoherent holography, scratcho-grams, chatoyant holography, holosketches, single-fringe hologram, giant-fringe nondiffractive hologram, specular holograms...
@@leif1075 I used up all the fun by inventing it ...so I left it for others to have fun posting on YT. Original science-fair project is amasci.com/amateur/holo1.html, see the FAQ for more details, and some scratch-holo tutorials are on YT playlist th-cam.com/play/PL60100E8F3572CEB1.html
@@grimsk 프로젝트 웹사이트나 홀로그램 YT 플레이리스트를 확인해 보세요. My holograms are now on vinyl records everywhere: Star wars Force Awakens, "Rush 2112," Jack White Lazaretto, hand made by Tristan Duke. 제 홀로그램은 이제 모든 곳의 비닐 앨범에 실려 있습니다: 스타워즈 비닐, "포스 어웨이크닝," "러쉬 2112," 잭 화이트 라자레토. 실제 아티스트는 트리스탄 듀크였습니다.
Wow! From my advanced computer graphics class I knew about directionally reflective surfaces (such as brushed steel) and I speculated that it should be possible to take advantage of this effect to produce holograms, but I never actually tried it. I see someone has already beat me to it! Good job!
I read about this method a long time ago, about fifteen years ago, and while I understood what was meant to happen, I could never get it to work properly. The method I saw called for dividers scoring lines on acetate. This is the first time I've ever seen it work, so kudos!
Holy crap. Glad this video is still up. I must have first seen it over a decade ago. I want to try turning my 3D printer in a CNC machine for doing more complex versions of this.
I didn't realize you can totally control if you want to make the object move opposite to the way it was being rotated in space, or even have some objects rotate normally while others rotate opposite all on the same plate
Track down the 2003 research paper. I also reveal how to create holes in opaque planes, or black opaque 3D objects, with white edges. Also, plans for a possible "scratch-hologram camera," still never been tried. Giant miles-wide holograms made from bent polished rods, only viewed from aircraft? However, people HAVE made robotic hologram-scratchers, so they can sell huge custom holograms to the arts crowd. (But the ones on the Star Wars vinyl album, with rotating opaque Death Star and Millennium Falcon ...I hear that those were scratched by hand!
For going through the surface... the closer a point is to the surface, the smaller is the radius of the curved scratch. A point *on* the plastic becomes a single dot, and points *above* the plastic (that are out in the air) have backwards scratches. They are U shaped instead of arches. So a line that passes through the plastic is made of scratches whose radius gets smaller and smaller, then becomes a dot, then turn upside-down and get bigger again.
@ewak1991 styrene CD and DVD cases work great. The dark color is just for higher contrast. In this video half the holograms were done using clear acrylic backpainted black.
My teacher just showed us this video, and we made holographs in physics class! We had a darkroom set up, but it turns out our slides were too old, and wouldn't develop properly! So we went to your website and created some holographs on CD's, and CD cases. Thank you!
@Steve_Sloan see the big playlist: th-cam.com/play/PL60100E8F3572CEB1.html everybody else making their own version, including major rock bands, also Disney Corp, on the vinyl album release of the Star Wars soundtracks.
The spacing of the divider points is the same as the depth. Draw lots of dots at lots of different spacings. Also see number 7 in the FAQ about how to draw tilted glowing lines in full 3D (like the edges of that floating cube.)
I remember reading about this on your site when I was a young teenager. I never did get around to trying it, perhaps I will now... You gave me many months of reading and some experiments, thank you.
> but i dont get the opaque thing and how to stick the point of a cube "through" The "opaque" trick is in the 2003 invited paper. It's a bit hard to figure out. Simplest is to draw a vertical floating line, then use the described process to draw a cloud of deeper stars as if the vertical line is the edge of a black wall. For each star, the scratch ends differently depending on how close the star will be to the vertical edge.
@ewak1991 Can you get the corner spots working? So the invisible 3D cube has glowing tips? Check out the 2003 SPIE paper for instructions on making 3D straight lines. Basically you lay down a 3D spot between two existing 3D spots, then lay down more between those, in 3D always placing them in half way between two others. That fills in the straight line.
@CecilTerwilliger Yes, in all holograms the radius of the fringes determines positions of the image points. In this way an interference pattern is like a lens. But in normal holograms, the spacing of the fringes also affects the position of the image points. That's why light of a single frequency is needed. White light would turn images into rainbow blurs. But Stephen Benton at MIT invented a version where *only* the fringe radius determined the image points. Mine are Benton white-light holos.
> What material and instruments are you using @Morimaitesincahonda see the link directly below the video (the text caption.) Use a drafting compass and scraps of polycarb or acrylic bought from the recycle bin at the glass repair shop, or at Tap Plastics. Or start out using two nails pounded through a 10cm stick, scratching on old CD jewel cases. One scratch creates one floating pixel.
he was just making many small holes in a line so when they reflect you get a dotted line or surface. its like scratching a clear plastic binder in one direction and then looking at it under the light all the little scratch marks line up to make a line of light
Click on the link! Each curved scratch creates a glowing spark floating in 3D. The curvature of the scratch determines the depth of the glowing dot. Highly curved scratches make shallow dots. Broad sweeping scratches make very deep dots.
> paint both sides The black is just for contrast. Black paint, or black paper, or scratch the front of an old CDROM case (that has a black back.) With paint, just paint the back of the plastic (don't do the scratches on the paint.) See the website, especially the FAQ section.
@azzstar4 You mean a Dali Crucifix? That's not hard if you've practiced making cubes. It's even possible to make it stick out into space, and have the foreground bits hide the background bits. Or did you mean making an animation of the 3D projection of a rotating hypercube? That's possible in theory, although the animated holographic motion screws up the 3D effect a bit, so the straight lines get warped.
Is there any instructions somewhere that would teach me how to make holograms at home? I posted a video response above that is an example of the scale of work I do.
I get it the scratches follow an arc which controlls where the light is reflected at. when tilted the reflection moves along that arc. By keeping many arcs in a carfully created pattern it creates an image out of the reflections which appears to be 3d.
@Skyrimguy44 It's just clear plastic. Paint the back side black, or even attach some black paper. Cases from cdroms work fine. Best is scraps of polycarbonate PC plastic, but acrylic is ok too (got from local Tap Plastics shops and others.) Some glass repair shops have a big box of plastic scraps for sale.
> Are you in school? Development of "abrasion holos" came from a fight on sci.physics and Eaton-CH opto sensors division. I found the effect, and said "wow, this is how Rainbow Holos work." People said, "no it's not, since you can't have opaque objects." I saw that real holography won't create opaque objects either, unless the million gabor zoneplates have holes from shadows of foreground objects. So the scratches must become complicated dotted lines. Or at least have fixed starts/ends.
> what type of material Use any kind of shiny platstic. Cases from cdroms work well. Or buy Lexan or polycarbonate sheets from the scrap bin at Tap Plastics or similar stores.
Man that takes some work, well done. And to anyone out there it ain't fake as long as you know the mapping out of the picture you are doing and figure out where the pix go there is no reason why you couldn't do this by hand. All it is, is just a series of dots that make up a picture overlapping at a different perspective than the first one, And because your left eye sees it to a different perspective than your right one it gives the illusion of 3D but very hard and patient work to complete. :o)
That's amazing, man... Those must look REALLY neat in person. Gotta admit that seeing a video of a hologram plate in action isn't quite the same as seeing one for yourself... but close enough, really good work there.
> all entirely by hand, By hand using "dividers," a 2-point compass. See the complete story on the main website. Just recently someone found that a CNC driven cutter could make them, if the cutter was set up for "drag engraving" of copper plates.
I completely get this. You must have a monster size patience. I'm so bloody impressed. I never realized you could actually do this by hand....but why not? In a way this the nerd version of needle point . ;^)
> understand Take a vinyl record album out in the sun. Or try it with a DVD. The stripe of light that moves along the grooves? It has a 3D effect. Your left and right eyes see two different stripes. Curved reflective grooves always do this. They act like a kind of lens, so they create a focused speck of light that hangs in space. (If you turn these holograms upside-down, then the image floats in front of the plastic sheet.)
I have a question @wbeaty: The 3d effect comes from parallax, meaning when you move your camera, the "object" moves also moves. But if you look with your eyes (2 "cameras"), since they have slightly different positions, the most distant point on any curve is a different one for each eye. So you would have to close one eye, otherwise the thing just looks confusing, right?
This might be a little late, but I love these kinds of questions since they help us understand things in new ways. Because the effect is relative to the light source and each “camera”, the left eye and right eye *do* get different images, but there’s additional magic: since each “camera” captures it’s own perspective the holograms can be built so they each human eye is seeing a different angle of a 3D scene. When he says the tip of the square pops out, for example; his two eyes are actually seeing the tip protrude towards him in 3D space!
Wow, that's really cool. I had no idea such a thing was possible but from your description of making it with a compass it makes perfect sense. Is it accurate to say that the 3D appearance is only for side to side motion and not when tilting it up and down?
> Is there any instructions somewhere that would teach me My holograms webpage? It's linked right on the youtube page above. Or are you talking about conventional holograms instead? For those I'd search for holography forums. But conventional holograms are only a few inches across unless you go to a professional lab which does pulsed holography.
So if I take a compass and scratch a curve in a piece of plastic with a dark back, I'll see a point that appears to be 3-d? What if I don't? Did I do something wrong?
It also seems like it ought to be possible to invent some sort of device that can make multiple scratches at once, using a steel brush perhaps; something in the spirit of Galileo's classic curve drawing instruments.
This is so cool! I have done a few, but nothing meaningful in 3-d yet. A good material to practice and experiment on is a 2-liter coke bottle. Cut the middle section of the bottle out with scissors - or don't cut the bottle and the image will be narrower from the curvature. This soft plastic grooves easily and you probably already have everything you need to start. Very interesting!
> hundreds of holes Look at the instructions for making your own, and the explanation. Click on the link. The holes are where you rest the first sharp point of the compass, while you make curved scratches with the second sharp point. Scratch-holograms always have a cluster of these marks below the actual hologram. Benton Whitelight holograms are composed of a series of curved lines. I found that you can scribe the lines by hand rather than creating them with laser interference.
@andarks Nope, but use a video projector as a light source. Feed it a white square. Or overhead projector, etc. At night, go out under a single streetlight.
I did this last night, it is easy and fun. I did two squares at different planes with lines connecting the corners. It floats about 2 inches over the plate.
I understand how you get flat images that shift, but how do you get depth? I would guess that you would do each depth layer with a different compass radius off set from the primary image buy an equal amount, but that is a guess. Smaller radii I guess would correspond to closer features.
I get your point. But I was thinking of some kind of ink type, as in only visible through certin angles. It could appear like the colours on a soap bubble. Going with that concept, it might work.
it would probably be harder to figure out how to make, but it would be interesting to see an animated hologram (a hologram where besides paralaxing there is also actual motion in the scene)
Have you noticed that if the light source at infinity shines perpendicular to the surface, the image locus is no longer astigmatic? ( I was thinking about this the other day, and it will be a straight line through the center of the circular scratch perpendicular to the plane of the circle ). Of course then you can't assume the observer is also perpendicular to the surface, or else all you'll see is an image of the sun!
Do it outdoors, in the sun! One curved scratch will always have a little glistening spot which moves around. (You need sunlight to see this.) If you make a bunch of scratches packed close together about 1mm spacing, like grooves in a record album, then the row of glistening spots becomes a glowing line.
I've been trying to replicate the cube you made at 2:10, but I can't get the middle part to stop moving. Could you show the scratches on the plate? The 3 lines that go to the center are ridiculously hard for some reason.
My dad worked in a holography at the university of Michigan lab as a grad student, and when I was young he showed me how to do something like this, but lord, our little home project never turned out that well. bloody amazing. did you etch those paths by hand? how did you get the termination of the arcs so precise on the object-hidden-by-opaque-planes?
Did you draw these all entirely by hand, or did you have a computer etch the lines into the material? That's very clever, I would never have thought of that.
> view it indoors Simple indoor spotlight: use a video projector as a light bulb (give it a white image to project.) Or try an old slide projector or overhead.
> what kind of material See the website. DVD jewel cases are good for starting out. Acrylic (plexiglas) works OK, but polycarbonate (lexan) is better (softer.)
What is the difference between incandescent and fluorescent light when it comes to using them as a light source for viewing these holograms? Which would perform better? I'm looking for an effective indoor light source.
First, just wait ten years. Now today everybody has a phone with an intensely bright LED! Phone lights work well for illuminating holograms. Because these are real holograms, they'll be blurry unless the illuminator is a coherent source, or in other words a tiny point-source. (a laser-based point-source is ideal. But sunlight gives acceptable results.) The most coherent sources are also the smallest. A transparent incandescent bulb will give clearer images than a frosted bulb. Fluorescent tubes are terrible because they're so large. However, if you hold the hologram perpendicular to a SINGLE fluorescent tube, then the image will be fairly clear, because the hologram "thinks" that the fluorescent tube is only 1in wide. Try using a video projector, where the focus is adjusted for maximum blur. Even better, try projecting a vertical thin bright line on a black background. Adjust the projector lens to blur the line, so the projected beam is wide enough to cover the hologram. With Rainbow holograms and with scratch holograms, the illumination doesn't have to be a pinhole source. It can also be a narrow line-source, if the line is oriented crossways to the scratches. When looking at the "glints" in the scratches, we want those viewed reflections to be tiny, like sparks or stars.
Just a couple of questions: 1. What is the plastic used in the video and where can one buy it? 2. (just to see if i understand the basic concept) if I make different size arcs all originating from the same point, the resulting image will be a line seeming to delve deeper in to virtual space?
@colsupertaco Yep, "The Kiss" is the famous example. Those are multiplex holograms, white-light holograms basically the same as this one. In theory you could make a specialized scratch-hologram on a flexible sheet, then wrap the sheet into a cylinder shape. Put a light source above, and a glowing object would appear in the middle, and you could walk all around it. The secret is to make an animated hologram of a 3D rotating object. Then when you turn the cylinder, the object seems to turn
> material and See the main website. DVD or CDROM cases work best. Note that extremely sharp compass point works poorly. Dull it with fine sandpaper, or replace the point with a small finishing nail.
@wbeaty : I don't have a video projector xD Do you think I could also use a marker to make the back of the styrene plastic black, or does it have to be paint? Also, what kind of paint, or does any type do the job?
I just got a pocket watch with "hologram" etchings like this inside the case. So I suppose a form of this was known in the late 1800s. The etching is a series of circles that appear to spin, with two spirals in the center that move and appear 3D.
@wbeaty well,they have invented a hologram which you can see a image from all angles,for instance a person from all angles if you walk around.it dosent float in mid air through,its just a circluar screen attached to a cylinder
@wbeaty I thought the purpose of the defraction grating on a rainbow hologram was to separate out the light into a spectrum so you get parallel bars of monochromatic light. The actual hologram(s) lie under the defracton grating. It looks to me like your hologram *is* the defraction grating. One made form arcs instead of straight lines. I'm guessing that the shorter the radius of the arc, the further form the plane the point it represents appears?
Mr Beaty, this is amazing! I am fascinated by hand-made optical technologies. I found your work because I am now finishing a stereoscopic (3d pair) abstract drawing by hand, and I can't seem to find much history on this. Has it been done much? My drawing is pretty elaborate, and I think it is something special, but no one I know cares. Who would care about something like this? How did you go about sharing your idea?
Yeah it's 1 in the morning here at the moment, so ill give it a try tomorrow! For the box with the 1,2,3 in, did you just make sure that the curves for the numbers stayed inside the box or is it some other method completely? Because I cant understand how that would work with the method im trying for the "V".
@ewak1991 Excellent! Oh, and a video projector makes a good spotlight indoors. Use msPaint etc. to set the projection to all white screen (or all blue, etc.), then blur the focus. For classroom demonstrations I can find an old overhead projector in the school: place it atop a tall filing-cabinet and aim the beam downward.
Every person who re-discovers this technique must come up with their own name for it!
Holo-diagrams, mechanical holograms, abrasion holograms, scratch-holograms, incoherent holography, scratcho-grams, chatoyant holography, holosketches, single-fringe hologram, giant-fringe nondiffractive hologram, specular holograms...
Hiw do you draw this exactly?? Do you have any tutorial videos?
@@leif1075 I used up all the fun by inventing it ...so I left it for others to have fun posting on YT. Original science-fair project is amasci.com/amateur/holo1.html, see the FAQ for more details, and some scratch-holo tutorials are on YT playlist th-cam.com/play/PL60100E8F3572CEB1.html
I really like "chatoyant holography" - BIG fan! 😁👍
@@wbeaty 취미로 어디까지 갈 수 있는가..!
@@grimsk 프로젝트 웹사이트나 홀로그램 YT 플레이리스트를 확인해 보세요. My holograms are now on vinyl records everywhere: Star wars Force Awakens, "Rush 2112," Jack White Lazaretto, hand made by Tristan Duke. 제 홀로그램은 이제 모든 곳의 비닐 앨범에 실려 있습니다: 스타워즈 비닐, "포스 어웨이크닝," "러쉬 2112," 잭 화이트 라자레토. 실제 아티스트는 트리스탄 듀크였습니다.
"Nah, spend years getting back to "childhood brain" to see all the things that normal people ignore." So true! and great job with the holograms
Wow! From my advanced computer graphics class I knew about directionally reflective surfaces (such as brushed steel) and I speculated that it should be possible to take advantage of this effect to produce holograms, but I never actually tried it. I see someone has already beat me to it! Good job!
I read about this method a long time ago, about fifteen years ago, and while I understood what was meant to happen, I could never get it to work properly. The method I saw called for dividers scoring lines on acetate.
This is the first time I've ever seen it work, so kudos!
Holy crap. Glad this video is still up. I must have first seen it over a decade ago. I want to try turning my 3D printer in a CNC machine for doing more complex versions of this.
This video was used in my 11th grade physics e-book.
I didn't realize you can totally control if you want to make the object move opposite to the way it was being rotated in space, or even have some objects rotate normally while others rotate opposite all on the same plate
Track down the 2003 research paper. I also reveal how to create holes in opaque planes, or black opaque 3D objects, with white edges. Also, plans for a possible "scratch-hologram camera," still never been tried. Giant miles-wide holograms made from bent polished rods, only viewed from aircraft? However, people HAVE made robotic hologram-scratchers, so they can sell huge custom holograms to the arts crowd. (But the ones on the Star Wars vinyl album, with rotating opaque Death Star and Millennium Falcon ...I hear that those were scratched by hand!
For going through the surface... the closer a point is to the surface, the smaller is the radius of the curved scratch. A point *on* the plastic becomes a single dot, and points *above* the plastic (that are out in the air) have backwards scratches. They are U shaped instead of arches.
So a line that passes through the plastic is made of scratches whose radius gets smaller and smaller, then becomes a dot, then turn upside-down and get bigger again.
@ewak1991 styrene CD and DVD cases work great. The dark color is just for higher contrast. In this video half the holograms were done using clear acrylic backpainted black.
My teacher just showed us this video, and we made holographs in physics class! We had a darkroom set up, but it turns out our slides were too old, and wouldn't develop properly!
So we went to your website and created some holographs on CD's, and CD cases.
Thank you!
i found this page a while ago and just found another one of your experiments, and realized it was both you!
great work man keep this up!
Still amazing after 13 years... I know I watched this a bunch of times when you first uploaded it. 🇦🇺🤜🏼🤛🏼🍀🍀🍀😎🤯🤓
@Steve_Sloan see the big playlist: th-cam.com/play/PL60100E8F3572CEB1.html everybody else making their own version, including major rock bands, also Disney Corp, on the vinyl album release of the Star Wars soundtracks.
Amidst wondering where Mr. Beaty found the time to explore this, I am none the less extremely impressed!
The spacing of the divider points is the same as the depth. Draw lots of dots at lots of different spacings. Also see number 7 in the FAQ about how to draw tilted glowing lines in full 3D (like the edges of that floating cube.)
I remember reading about this on your site when I was a young teenager. I never did get around to trying it, perhaps I will now... You gave me many months of reading and some experiments, thank you.
> but i dont get the opaque thing and how to stick the point of a cube "through"
The "opaque" trick is in the 2003 invited paper. It's a bit hard to figure out. Simplest is to draw a vertical floating line, then use the described process to draw a cloud of deeper stars as if the vertical line is the edge of a black wall. For each star, the scratch ends differently depending on how close the star will be to the vertical edge.
@JekyllsOtherHalf Dividers, but they can't be too sharp. (I use a nail in the dividers.) CD cases work well for the plastic
I'm impressed by that. I see no practical use for this technique, but I am impressed that it can be done at all.
@ewak1991 Can you get the corner spots working? So the invisible 3D cube has glowing tips?
Check out the 2003 SPIE paper for instructions on making 3D straight lines. Basically you lay down a 3D spot between two existing 3D spots, then lay down more between those, in 3D always placing them in half way between two others. That fills in the straight line.
See the website, the "frequently asked questions". Yes, CD cases are perfect. Most are already black inside.
@CecilTerwilliger Yes, in all holograms the radius of the fringes determines positions of the image points. In this way an interference pattern is like a lens. But in normal holograms, the spacing of the fringes also affects the position of the image points. That's why light of a single frequency is needed. White light would turn images into rainbow blurs. But Stephen Benton at MIT invented a version where *only* the fringe radius determined the image points. Mine are Benton white-light holos.
This is spectacular!
Heh. Also car-hoodly, and chatoyant! But not very diffractive, nor Gabor-lens-ish.
Read the physics paper on the main website?
> What material and instruments are you using
@Morimaitesincahonda see the link directly below the video (the text caption.) Use a drafting compass and scraps of polycarb or acrylic bought from the recycle bin at the glass repair shop, or at Tap Plastics. Or start out using two nails pounded through a 10cm stick, scratching on old CD jewel cases. One scratch creates one floating pixel.
he was just making many small holes in a line so when they reflect you get a dotted line or surface. its like scratching a clear plastic binder in one direction and then looking at it under the light all the little scratch marks line up to make a line of light
Click on the link!
Each curved scratch creates a glowing spark floating in 3D. The curvature of the scratch determines the depth of the glowing dot. Highly curved scratches make shallow dots. Broad sweeping scratches make very deep dots.
> paint both sides
The black is just for contrast. Black paint, or black paper, or scratch the front of an old CDROM case (that has a black back.) With paint, just paint the back of the plastic (don't do the scratches on the paint.) See the website, especially the FAQ section.
does a broken abrasion hologram have the same characteristics of one recorded with a laser?
AHH! It all makes sense now! I made a simple one of a small "deeper" square inside a large "shallower" square and it looks great! Thank you so much!
@azzstar4 You mean a Dali Crucifix? That's not hard if you've practiced making cubes. It's even possible to make it stick out into space, and have the foreground bits hide the background bits.
Or did you mean making an animation of the 3D projection of a rotating hypercube? That's possible in theory, although the animated holographic motion screws up the 3D effect a bit, so the straight lines get warped.
@wbeaty I found your FAQ immensely useful and informative. My holograms are actually pretty damn clear now! Thanks alot!
Is there any instructions somewhere that would teach me how to make holograms at home? I posted a video response above that is an example of the scale of work I do.
I get it the scratches follow an arc which controlls where the light is reflected at. when tilted the reflection moves along that arc. By keeping many arcs in a carfully created pattern it creates an image out of the reflections which appears to be 3d.
@Skyrimguy44 It's just clear plastic. Paint the back side black, or even attach some black paper.
Cases from cdroms work fine. Best is scraps of polycarbonate PC plastic, but acrylic is ok too (got from local Tap Plastics shops and others.) Some glass repair shops have a big box of plastic scraps for sale.
> Are you in school?
Development of "abrasion holos" came from a fight on sci.physics and Eaton-CH opto sensors division. I found the effect, and said "wow, this is how Rainbow Holos work." People said, "no it's not, since you can't have opaque objects." I saw that real holography won't create opaque objects either, unless the million gabor zoneplates have holes from shadows of foreground objects. So the scratches must become complicated dotted lines. Or at least have fixed starts/ends.
Such beautiful Beatyograms.
> what type of material
Use any kind of shiny platstic. Cases from cdroms work well. Or buy Lexan or polycarbonate sheets from the scrap bin at Tap Plastics or similar stores.
Man that takes some work, well done. And to anyone out there it ain't fake as long as you know the mapping out of the picture you are doing and figure out where the pix go there is no reason why you couldn't do this by hand. All it is, is just a series of dots that make up a picture overlapping at a different perspective than the first one, And because your left eye sees it to a different perspective than your right one it gives the illusion of 3D but very hard and patient work to complete. :o)
That's amazing, man... Those must look REALLY neat in person. Gotta admit that seeing a video of a hologram plate in action isn't quite the same as seeing one for yourself... but close enough, really good work there.
> all entirely by hand,
By hand using "dividers," a 2-point compass. See the complete story on the main website.
Just recently someone found that a CNC driven cutter could make them, if the cutter was set up for "drag engraving" of copper plates.
I completely get this. You must have a monster size patience. I'm so bloody impressed. I never realized you could actually do this by hand....but why not?
In a way this the nerd version of needle point . ;^)
No paint needed. It's only for contrast. Hold up some black paper if you want. Or put black paint on the back.
> understand
Take a vinyl record album out in the sun. Or try it with a DVD. The stripe of light that moves along the grooves? It has a 3D effect. Your left and right eyes see two different stripes. Curved reflective grooves always do this. They act like a kind of lens, so they create a focused speck of light that hangs in space. (If you turn these holograms upside-down, then the image floats in front of the plastic sheet.)
I have a question @wbeaty: The 3d effect comes from parallax, meaning when you move your camera, the "object" moves also moves. But if you look with your eyes (2 "cameras"), since they have slightly different positions, the most distant point on any curve is a different one for each eye. So you would have to close one eye, otherwise the thing just looks confusing, right?
This might be a little late, but I love these kinds of questions since they help us understand things in new ways.
Because the effect is relative to the light source and each “camera”, the left eye and right eye *do* get different images, but there’s additional magic: since each “camera” captures it’s own perspective the holograms can be built so they each human eye is seeing a different angle of a 3D scene. When he says the tip of the square pops out, for example; his two eyes are actually seeing the tip protrude towards him in 3D space!
Wow, that's really cool. I had no idea such a thing was possible but from your description of making it with a compass it makes perfect sense.
Is it accurate to say that the 3D appearance is only for side to side motion and not when tilting it up and down?
> Is there any instructions somewhere that would teach me
My holograms webpage? It's linked right on the youtube page above.
Or are you talking about conventional holograms instead? For those I'd search for holography forums. But conventional holograms are only a few inches across unless you go to a professional lab which does pulsed holography.
I read your FAQ, and it is a kind of hologram, you are right, but it doesn' use diffraction and interference to produce a picture whatever you say.
> and what do you need?
This video is an ad for the "Scratch Holograms" science project website. You'll have to check out the website.
So if I take a compass and scratch a curve in a piece of plastic with a dark back, I'll see a point that appears to be 3-d? What if I don't? Did I do something wrong?
I was thinking that too, it would be a challenge, but I think it would be worth it. Maybe you could create "shades" with deep and shallow scratches?
It also seems like it ought to be possible to invent some sort of device that can make multiple scratches at once, using a steel brush perhaps; something in the spirit of Galileo's classic curve drawing instruments.
well done mate! very impressive, I'd love to see a how-too vid of the 3D cube or how to correctly create an opaque area
@ewak1991 marker should work fine. or just hold it up against a dark colored book. it just has to give good contrast.
This is so cool! I have done a few, but nothing meaningful in 3-d yet. A good material to practice and experiment on is a 2-liter coke bottle. Cut the middle section of the bottle out with scissors - or don't cut the bottle and the image will be narrower from the curvature. This soft plastic grooves easily and you probably already have everything you need to start. Very interesting!
> hundreds of holes
Look at the instructions for making your own, and the explanation. Click on the link.
The holes are where you rest the first sharp point of the compass, while you make curved scratches with the second sharp point. Scratch-holograms always have a cluster of these marks below the actual hologram.
Benton Whitelight holograms are composed of a series of curved lines. I found that you can scribe the lines by hand rather than creating them with laser interference.
@andarks Nope, but use a video projector as a light source. Feed it a white square. Or overhead projector, etc. At night, go out under a single streetlight.
I did this last night, it is easy and fun. I did two squares at different planes with lines connecting the corners. It floats about 2 inches over the plate.
I understand how you get flat images that shift, but how do you get depth? I would guess that you would do each depth layer with a different compass radius off set from the primary image buy an equal amount, but that is a guess. Smaller radii I guess would correspond to closer features.
I get your point. But I was thinking of some kind of ink type, as in only visible through certin angles. It could appear like the colours on a soap bubble. Going with that concept, it might work.
> how long did it take
Those 3D cubes take less than1/2 hour once you've made a couple.
This is just GREAT !!!!! Bravo et encore ! Respect and love from France.
Are you gona show us how to do this? I know how it works, but i want to see you make one...
it would probably be harder to figure out how to make, but it would be interesting to see an animated hologram (a hologram where besides paralaxing there is also actual motion in the scene)
that ingenious! I didn't get it at first but you provided a great explanation. I can't wait to try! Thanks a ton!
do you think pixels on an lcd screen would be small enough to create arcs that can produce this kind of holograms?
Have you noticed that if the light source at infinity shines perpendicular to the surface, the image locus is no longer astigmatic? ( I was thinking about this the other day, and it will be a straight line through the center of the circular scratch perpendicular to the plane of the circle ). Of course then you can't assume the observer is also perpendicular to the surface, or else all you'll see is an image of the sun!
Do it outdoors, in the sun!
One curved scratch will always have a little glistening spot which moves around. (You need sunlight to see this.) If you make a bunch of scratches packed close together about 1mm spacing, like grooves in a record album, then the row of glistening spots becomes a glowing line.
> HOw did u do that?
Check out the webpage. A plastic DVD or CD case works best.
I've been trying to replicate the cube you made at 2:10, but I can't get the middle part to stop moving.
Could you show the scratches on the plate? The 3 lines that go to the center are ridiculously hard for some reason.
My dad worked in a holography at the university of Michigan lab as a grad student, and when I was young he showed me how to do something like this, but lord, our little home project never turned out that well. bloody amazing. did you etch those paths by hand? how did you get the termination of the arcs so precise on the object-hidden-by-opaque-planes?
Mr. Beaty, you are a genius!
Did you draw these all entirely by hand, or did you have a computer etch the lines into the material?
That's very clever, I would never have thought of that.
You should make some of these and
sell them, I'd love to buy one.
> view it indoors
Simple indoor spotlight: use a video projector as a light bulb (give it a white image to project.) Or try an old slide projector or overhead.
> what kind of material
See the website. DVD jewel cases are good for starting out. Acrylic (plexiglas) works OK, but polycarbonate (lexan) is better (softer.)
What is the difference between incandescent and fluorescent light when it comes to using them as a light source for viewing these holograms? Which would perform better? I'm looking for an effective indoor light source.
First, just wait ten years. Now today everybody has a phone with an intensely bright LED! Phone lights work well for illuminating holograms.
Because these are real holograms, they'll be blurry unless the illuminator is a coherent source, or in other words a tiny point-source. (a laser-based point-source is ideal. But sunlight gives acceptable results.)
The most coherent sources are also the smallest. A transparent incandescent bulb will give clearer images than a frosted bulb. Fluorescent tubes are terrible because they're so large. However, if you hold the hologram perpendicular to a SINGLE fluorescent tube, then the image will be fairly clear, because the hologram "thinks" that the fluorescent tube is only 1in wide.
Try using a video projector, where the focus is adjusted for maximum blur. Even better, try projecting a vertical thin bright line on a black background. Adjust the projector lens to blur the line, so the projected beam is wide enough to cover the hologram. With Rainbow holograms and with scratch holograms, the illumination doesn't have to be a pinhole source. It can also be a narrow line-source, if the line is oriented crossways to the scratches. When looking at the "glints" in the scratches, we want those viewed reflections to be tiny, like sparks or stars.
@@wbeaty The long con my man
@@elverg47 my list of intentional memes, some successful... amasci.com/news.html#memes
Just a couple of questions:
1. What is the plastic used in the video and where can one buy it?
2. (just to see if i understand the basic concept) if I make different size arcs all originating from the same point, the resulting image will be a line seeming to delve deeper in to virtual space?
@colsupertaco Yep, "The Kiss" is the famous example. Those are multiplex holograms, white-light holograms basically the same as this one. In theory you could make a specialized scratch-hologram on a flexible sheet, then wrap the sheet into a cylinder shape. Put a light source above, and a glowing object would appear in the middle, and you could walk all around it. The secret is to make an animated hologram of a 3D rotating object. Then when you turn the cylinder, the object seems to turn
Could the pictures be created in a colored version? (if we use mixed colors of artifical light-source)
The website has all the details. This video is really just an "animated graphic" for the website
> material and
See the main website. DVD or CDROM cases work best. Note that extremely sharp compass point works poorly. Dull it with fine sandpaper, or replace the point with a small finishing nail.
wow.... i'm speechless... You are a GENIUS
@wbeaty : I don't have a video projector xD
Do you think I could also use a marker to make the back of the styrene plastic black, or does it have to be paint? Also, what kind of paint, or does any type do the job?
Amazing using light as Art,i never knew about it
I just got a pocket watch with "hologram" etchings like this inside the case. So I suppose a form of this was known in the late 1800s.
The etching is a series of circles that appear to spin, with two spirals in the center that move and appear 3D.
Will it work if you use a flash light or something like that rather than sun light?
I was wondering that.
Do you paint both sides of the plastic or just the back? And black high gloss spray paint would work well, right?
> get plexi glass
Try a cdrom or dvd 'jewel case.' That plastic works better, and it has a black background for good contrast.
@wbeaty well,they have invented a hologram which you can see a image from all angles,for instance a person from all angles if you walk around.it dosent float in mid air through,its just a circluar screen attached to a cylinder
great stuff-can you do a tutorial?
@wbeaty I thought the purpose of the defraction grating on a rainbow hologram was to separate out the light into a spectrum so you get parallel bars of monochromatic light. The actual hologram(s) lie under the defracton grating. It looks to me like your hologram *is* the defraction grating. One made form arcs instead of straight lines. I'm guessing that the shorter the radius of the arc, the further form the plane the point it represents appears?
hey Bill, am a big fan of yours. take care and I love your stuff!
Mr Beaty, this is amazing!
I am fascinated by hand-made optical technologies. I found your work because I am now finishing a stereoscopic (3d pair) abstract drawing by hand, and I can't seem to find much history on this. Has it been done much? My drawing is pretty elaborate, and I think it is something special, but no one I know cares. Who would care about something like this? How did you go about sharing your idea?
website link!
This is amazing. Strong work.
I am thoroughly impressed! Great work!
Yeah it's 1 in the morning here at the moment, so ill give it a try tomorrow!
For the box with the 1,2,3 in, did you just make sure that the curves for the numbers stayed inside the box or is it some other method completely? Because I cant understand how that would work with the method im trying for the "V".
the link does not open i wanna know how to do it please
@ewak1991 Excellent!
Oh, and a video projector makes a good spotlight indoors. Use msPaint etc. to set the projection to all white screen (or all blue, etc.), then blur the focus. For classroom demonstrations I can find an old overhead projector in the school: place it atop a tall filing-cabinet and aim the beam downward.
where can i find acrylic plastic