Hello and welcome to Phil’s Physics. Holograms are really cool, aren’t they? Maybe in the future we can make phone calls with it. And you know what? The future starts in five seconds. Because we are building a hologram projector. What you need is: Smartphone, jewel case, this template (video description) and tools like triangle, cutter, tape and scissors. First we cut some pieces from the jewel case Therefore we need the template you can find it on the link below to print it out. Stick the template on the jewel case and cut it out with the box cutter.
I’ll make it a bit smaller first. You don’t really need the borders, so you can remove them. When you scratched it with the cutter, just crease it carefully and you can remove it easily. So you have a nice slice you can stick the template on. It don’t have to be perfect right now. The template just needs to stick on it, so that I can slide over the lines. And it doesn’t matter if you don’t intersect the complete plastic at the first time, but rather do the same line multiple times and keep it straight. And now I’m doing this with all lines. Well, now I have traced all the lines. We can remove the template, we no longer Need it. It doesn’t matter when it gets broken, because everything is transferred. And now comes the fiddly task of carefully breaking apart the pieces. Always break it, while the cut side is up. And after that you have a nice smooth edge. From this we build us a small pyramid. This can either be done with superglue. I have tried it, but the thing is, that the vapors from this glue make
the plastic go milky. Therefore my advice: try it with sticky tape. Stick the tape to the edges, and build your pyramid that way. Put the second side this way. Flip it. And the first half is finished. That’s what it looks like. Continue with the other two sides and that works exactly the same. Hold it carefully. Put the tape around it and ready. One thing that can go wrong here is, if you accidentally stuck the tape on the wrong side, you can not fold the pages anymore. It’s getting serious now. The final piece of tape. Done! So this is the result of our small handicraft. A pyramid made of plastic. And what you need now, is your smartphone with a hologram video. A few I link to you in the video description. And then you simply put your pyramide on top of it. And you can already gaze at a hologram. You have to keep a bit dark. So if you have the lights on, put them out. Then you see the hologram best. I will tell you later how you can do a hologram of yourself. But before that, some smart-ass talk: How does this work? We got our Smartphone here. And our beautiful pyramid on top. Then the pyramid works like a semi-transparent mirror. This is a mirror that reflects a bit, and simultaneously you can look through it. So here’s something displayed on the smartphone. And I’m looking from here .. I will see the reflection of this image in this mirror here. Here’s a light beam. That goes this way. And for me as an observer the impression is as if there’s an object somewhere here. This thing is two-dimensional, which means flat. When I look at a picture there is no stereoscopic vision, everything is flat. What gives the impression of 3D here, is that I look through this mirror So I can still see objects that are somewhere back here. Our brain thinks: There is something in the foreground, there is something in the background. So altogether I get something three-dimensional. I promised you, that I will show you how you get a hologram of yourself. It is quite easy, you need an app to do so. The app is linked in the description. Then you take a video of yourself with a black background And from a this the app will produce a hologram video. I have tried it sometimes. I’m trying to do a handstand. This looks slightly ridiculous. But while you laugh your ass off,
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