Learn more about holography and Jason Sapan's Holographic Studios at www.holographer.com/

This guy is so full of analogies. I guess 40 years of trying to explain holograms to people have led him to this point.

I went to a hologram exhibition in London (UK) on a school trip. The best hologram I saw was of a microscope sat on a table, however, when you stood in the correct position some feet away from the whole hologram, you could look down through the microscope to see a hologram of a printed circuit board. It blew my mind. Saw another good one in Amsterdam (NL) of a man changing into a werewolf through about 6 different changes as you walked past it.

I really enjoyed not understanding most of this.

he actually explained the physical phenomena the most thoroughly and competently of anyone ive seen on youtube thus far.

One of the coolest things about a hologram is that if you cut it up the entire image is on every piece, just limited to the view from that part of the hologram. So If you had the upper right hand corner you would have a three dimensional view from that corner.

He's not really answering the questions, he's answering other related questions that Norm didn't ask.

Back in mid 90's we did holography in high school. It was a kit with pretty basic ruby laser, a lens, polaroid size transparent film, simple glass frame to mount the film for the exposure and basic liquids for black & white positive development. Made som awesome holograms. Surprisingly easy and straightforward.

I would've been nice to see a hologram, from the original 'photo'...all the way through the process until it becomes a hologram. But in any case...great video! Very interesting!

Holograms are the shape of lightwaves as it passes through film. Mindblowing!

Usually, I understand English... but today, it's not that day.

The best tested video I've seen so far. Mr. Sapan would seem to be an excellent instructor, and Norm asks exactly the sort of questions necessary to keep the interview rolling. Well done.

I met this guy, and went to the shop. It's amazing and he's a fountain of knowledge, some good stories too. :)

This is pretty damn complex. I'd love to see a demonstration of how his equipment works, would be interesting. Always wonder how they stumbled upon something like this.

I know some of these words...

Well conducted interview & Mr. Sapan explained things very well. He obviously has a passion, hope he keeps his art going. Beautiful and interesting stuff, visually and conceptually.

This man missed his true calling as a politician... didn't answer a single thing in a way that lead to a better understanding of the initial question.

I loved the technical explanation of how this is done!

How cool! I really wish this process was still more popular. I'm actually looking into ordering something from them.

I loved the way he loves his job. Great to see

FINALLY, someone who explains it so that it can be understood! Thank you for this. xx

Tested you guys are always answering such cool qustions

8:15 Long Exposure hologram? Awesome!

I can't even begin to understand it entirely, but the way he explains things is amazing.

Fascinating stuff, thanks. Clearly a very complicated process, and not easy to put into layman's terms. But gave enough for me to want to learn more. Would love to see more vids like this, trying to explain complicated & interesting techs to the masses.

From what I understand, this still isn't a hologram. All they've done is burn a 3D image into different thicknesses of film. It seems as though all these tech companies are changing the definition of a hologram because they can't figure out how to achieve it. A hologram is a 3D image made from the interference of multiple continuous light beams. There shouldn't be anything left over to put in a display case; at that point, it's just a sculpture. If I'm not understanding this properly, please explain. However, the definition of a hologram is decades old. Think Princess Leia's message displayed by R2-D2 in the original Star Wars, that's a hologram.

I was reading about The Holographic Theory, and I couldn't picture how a holograph worked in my mind just by simple reading the words on the page- so I found myself here. You can tell this man knows what he's talking about- I completely understand holograms now! Thanks! Now I can apply this to what I was reading and better understand that subject, too! Yay!

Wow, that was so interesting! I was obsessed with holograms as a kid and bough some with my pocket money. I always wanted to know how they make them. And I didn't knew you could actually have your hologram portrait taken. Awesomeness! If I should ever come to NY I will take a tour of their workshop.

What an incredible description of how they are made!

I was at his museum this weekend, it was a great time i advise anyone that’s visiting New York to make sure you guys stop by at the Holographic Museum

Those works look amazing. Respect for Jason Sapan.

I wish this video was longer. I could listen to this guy talk all day.

I couldn't quite grasp what a hologram was. Thanks for this video. My understanding is much clearer.

This guy is absolutely awesome at explaining! Really enjoyed this video!

Awesome. The analogies were super useful in visualizing everything!

Very cool, I remember when holographic images first started appearing back in the early 80's. Cool stuff

An amazing description of holograms, fascinating. Thanks.

That old guy has perfected the art of saying a lot while not saying anything at all.

Having made holograms (literally in my basement), I can tell you that what you have here is a reasonable overview of the process (but, as I pointed out in a late rcomment, understandable only if you already know what holograms are), but here's more detail. The really detailed "WHY" a hologram does what it does is not simple to understand, much less explain in words. ... ... How the simplest "Transmission Hologram" is made ... ... The laser beam is split into two beams with something like a partly silvered morror. Each beam is spread out, using a simple lens, to form a wider cone-shaped beam more like flashlight's beam instead of just a dot. One beam shines on the whole film and is called a "reference beam". This is like one of the water 'ripples'. The other "Object beam" shines (by using mirrors to direct it) on the object being "photographed". The laser light reflected off the object goes in all directions, as usual, but the light reflected from the object which travels toward the film combines with the reference beam to form the interference pattern on the film. Where the two waves arrive always peak-to-peak (and trough-to-trough) they add to form more light and expose the film the most. Where the two waves meet trough-to-peek (and peak-to-trough) they subtract, or partly cancel, and the film is exposed less. ... However, it must be understood that this is a very, very complex three dimensional interference pattern within the film's emulsion. Because the film has thickness, there are interference 'patterns' created within the depth of the emulsion as well as across the surface dimensions. It is very difficult to describe in terms of the two simple ripples forming an interference pattern of just rings. If you have seen any kind of interference rings or patterns, you should realize that even though the light waves are going through their full cycles of extremely high frequency, these interference patterns are stationary. They are called standing waves. Because these patterns don't move as the light waves vary through their cycles, they expose the film in a stationary pattern. If you understand how standing waves are produced on a radio transmission line, this is the same principle, only in three dimensions instead of just one. ... Side Note: If you understand the mixing of frequencies in a radio receiver you have a little understanding how interference between two waves can preserve the information in one wave. ... After the film is developed and bleached to make it look clear, it can be viewed. To view the image the laser beam is spread again and shined on the film from the same direction as the original Reference Beam. This film is now just like a "window" though which you see the object in the same position it was when the film was exposed. The hologram produces light that leaves the hologram in the very same way it left the original object (and passed "thought" the window formed by the film). As your eye moves around the window's area, you see light in the same way that it actually left the object and traveled in that direction to the film. Since, at any one time, an eye only looks through a small part of this film window, this means that every location on the hologram film has a *complete image* of the object as viewed from that single location. THEREFORE, your two eyes, located at different locations and looking toward the film window, receive light in the same way they would form the actual object and you see it in 3-D. ... You may think of the hologram film as having billions of really small, strangely shaped prisms that refract the laser's light. They refract the light from the viewing laser into a form that duplicates the way light left the original object. Also, because they are prisms and prisms spread the colors in slightly different directions, you must use the correct wavelength of light to reconstruct the image correctly; though in my experience a close color looks pretty much the same. This may not help, but if you viewed a hologram of the simple interference rings from two split beams aimed at the film, you would see a single spot of light representing the "object beam". ... P.S. Yes, it is possible to make a hologram image that "floats" in front of the film. This is done as a hologram of a hologram to get the image on the other side of the film. However, the film must always be behind the floating image. Light through the film must meet your eye. It is a "virtual window" behind the image. A complete ring of film is required for you to walk around such a floating image along with light from a single laser coming from all around the outside and shining inward toward the center. ... P.P.S. Another amazing aspect of these "Transmission Holograms" is that if you shine a laser dot onto the hologram in the reverse direction from the original reference beam, you get a *complete image* of the object projected on a screen located where the object had been. This is *with NO lens*.. The image will be seen from the perspective of the point on the film where you would have looked at the original object when you exposed the film. As you move the laser dot around the film, the projected image changes perspective (rotates) to match that location on the film. I saw this demonstrated in a hologram talk and duplicated it myself. Very COOL! ... P.P.P.S. There are white light Holograms (which has all wavelengths/colors) and they use a nifty trick to do that, which I won't go into here. ScienceAdvisorSteve

Now this is a very nice change. Please keep this tend going. It feels like a more detailed alternative to the How it's Made tv series.

This guy is really good at talking down to people

This guy goes and goes and goes but I don't think he actually explains anything about this process in human english. All I understand is that holograms are made with film and lasers and something about wavelengths? The intercuts to this dude's studio where he's apparently just waving lasers around gives it kind of a surreal quality.

Wow what a great video. Thanks tested. Its really cool to learn these things. These holograms are really cool. Cant wait until they are able to make floating ones that dont need a film backing. Very interesting and educational. Good job.

Really enjoyed this. Thanks for sharing.

this explanation is quite intuitive, thank you.

I've heard of this guy! I only heard of his workshop/museum described on the radio - this is gonna be neat!

loooved it... highly educational.. kudos to that!

This man is brilliant. I've heard and read alot about how holograms are made. I"m still not fully grasping the holographic recording process, but I'm sure I will eventually catch on.

I loved the window of this place-- located in lower, East Side Manhattan. As I recall, they moved from one place to another, but it was hard to miss the rotating holographic displays! A little too pricey at the time-- altogether worth it if one can afford it. Still nothing like it!

This dude is a beast with his use of analogies.

One of the better epsodes. Thx

Always been fascinated by holograms, so 80's and magical :) Interesting stuff - I remember seeing a documentary a long time ago about them, but I didn't understand most of it, now I have a much better understanding of how they work.

This is so cool. I wanted to watch more after seeing this... maybe something Tested could have done is maybe show how you can make a simple one at home or something.

Loved the ‘harp thing’...you can play a rainbow!

Clear explanation. Thank you

Thanks for allowing Dr Laser to share all this knowledge with us :) Really love the way that you have let him complete all the explaination without interupting him

He really is calming to listen to >.>

This guy is an amazing artist and his work will be worth millions one day.

That was highly informative and well explained. That couple's fist bump idea is genius

i used to have so many of these holograms. really wish there was technology today to make some at home!

I am glad to know about somebody still making holograms. Even so, I announce holography as an extinguished technique, only present at some museums or as security seals in some credit cards or goods.

Nice vid as usual. would have been nice if they had gotten more into the actual technical details of how the process works

I found it really interesting to watch but I'm fairly sure not one word he said helped me understand how they are made.

hes a good speaker. was easy to understand what he was talking about

I was having trouble sleeping; it's been like two days now. Not anymore, though. :D Thank you, Mr Guy On The Left :D

I really, really enjoyed this- thank you!

wow, awesome stuff Tested. keep it up!! :)

Moar videos like this please, this was great.

Whoa that feragi to Klingon thing was awesome

Ugh I wish I could see this in person!

nice collection of hologram

awesome need to know more

Thank you ! Great explanation I liked the analogies, if you understand what light really is then you understand him very well, this is analog hologram so learning his perspective will really get you there, digital is even easier. Electromagnetic radiation is a form of radiant energy(waves) released by certain electromagnetic processes. Visible light is one type of electromagnetic radiation Diffraction refers to various phenomena which occur when a wave encounters an obstacle(object). Phase is the fraction of the wave cycle that has elapsed relative to the origin. I have never researched on holograms, first video is this one, I wanted to understand after I saw what Windows 10 is coming out with, and after this video I understand what holograms really are. Thank you !

Free education rocks! thank you tested and Dr laser !

Too bad we didn't get to see how it's made.

Wow. I haven't seen holograms since I collected super hero cards. Super cool.

Rob, there are transmit holograms and reflection holograms, all those in Norms shop, (on the video) seem to be reflection holograms. Im still trying to ponder if a transition hologram is displayed with the laser source shining right though it, like film, or reflecting on in from the same position of the object recorded.

I want one!!! Wow those things are cool!!

Reminds me of Warhammer 40k where they have these cameras that capture the visible shape of an object in a physical piece of film, then they process the film with a computer and use a 3D printer to print the hologram cube, and to them it's basically just another kind of photograph. I like the idea that even in the far future, we'll still use reliable analog technologies to some extent.

That's one great teacher!

Yep, this guy's analogies weren't that great, but the actual explanation at the end about lenses and compression seemed to make more sense. Wish he had spent 10 minutes actually explaining like that instead of telling us that light was clay...

Would it be possible to make a hologram that gives you the 3D view horizontally and animates when you change your angle of view vertically?

holograms are awesome, great video! :)

This was amazing, I had no idea...

I've made every single type of hologram show here, plus several dozen other types not spoken off. I've shot them into silver halide, dichromates, photopolymers, thermoplastics, live cell walls, plasmas, fluids and metal surfaces using UV/Visible/IR/X-Ray and Electrons. I've made surface planar phase, both direct and as embossing shims, and many different forms of volumetrics both inline and off-axis. If it can be handled holographically... I've done it.

So good!

This was actually very interesting for a change !

I've noticed a lot of your recent videos have been really quiet! I'm having to turn up my volume specifically for tested videos. Please turn the audio up a bit!

I was watching this and thought it would greatly help if there was simple illustration/animation explaining this process further. I could help you on that sort of thing if you wanted.

I just want those cool keychains from the 90's to come back so bad.

The most advanced form of 3D hologram showed in the film 'The Terminator' in 1984. I remember, the rays image of a lady came and sat on the lap of hero.

This is so cool. We watched a video about holograms in my physics class today lol

Is it possible to create those directly on a glass surface?

Wow! I'm really surprised at the comments here. I understood nearly everything he said. Best explanation ever! Not a big step from film to.......

man, this is like the explanation of light mechanics I wish i'd gotten in school, lol. super interesting.

lol, that fist bump was so lame

this explanation was the first that made seance to me

hope I can get this idea across. I am not a learned person but have studied everything I can get my hands on all my life. You might say I've attended the big school. the one you never graduate from. As I learned the concept back in the late 70's, you start with a weight table. Back then they were using a cement filled table that rested on inner tubes from truck and car tires to insulate the table from the vibrations of the earth. On this table they set up a laser (they started with red and then developed green and yellow lasers ). The light from these lasers were lased or traveling in the exact same direction, 100% or as close as possible, parallel in all directions so to speak. this beam was then split in two, one beam reflecting off of an object onto a nearby film and the other pointed directly at the film. This causes thick and thin places on the film so that when a normal light is shown behind the film after being developed, the object appears to be there. This is a very exacting process because the interaction of the two beams of light must meet the film at the same time from when they were sent from the laser.

Some people just can't simplify things. I know he thought he was explaining the process, but only someone with a degree in physics understood everything he said. And you can tell that Norm didn't understand half what he said either. LOL

This dude is mad smart in his very unique field tho. Lol his comparison to a blacksmith is actually pretty fitting