How 3D holograms work

Holograms are photographic recordings of 3D scenes. Unlike a camera, which captures one view through a small viewer focused by a lens, holograms capture an entire light field which allows them to recreate the 3D scene. Shimmery 2D projections, like pre-recorded Pepper’s ghost illusion, are often confused with 3D holograms.

Pepper’s Ghost Tutorials

Videography: Forbidden Kingdom Digital, Cathy Cowern

Music:
YouTube - “On the Bach,” “Good Starts”
Mozart “Eine Kleine Nachtmusik”

Stock Images: Pixabay

[amukeen]

Hello Physics Girl, we in the holography community are so happy you made this video! There are so many false claims nowadays about what a hologram is. It´s just perfect to see somebody actually knows what it´s about!

[Ratzfourtyfour]

Conclusion: It's kinda hard to explain.

[EugeneKhutoryansky]

It is a very good introduction to the topic, though of course, a much longer video would be required to fully explain how the diffraction properties of waves ends up producing a 3D image that rotates in the correct way when we change angle we look at it from.

[Durrdalus]

"Hey, mind coming over and stomp around my yard a bit while I film it?"

[dazwannawzad]

As a kid in the 80's I always wondered how the holograms for stickers like Lisa Frank and on toy lines like the Visionaries & Supernaturals were created, they appeared to be sculptures photographed in 3D. Thank you for a brief look into the creation of those images and if you don't know about the figures I am referring to, check them out, esp. the Visionaries line, some amazingly articulated 1980's nostalgia right there !!!

[peristanom]

Finally, someone able to patiently explain holograms to a non-scientist like me! Thank you!

[odog]

Because so many people think they are holograms, I always refer to peppers ghost as "holograms" with full air quotes. Most of my high school friends hate physics and don't want another long winded explanation from me.
But I LOVE holograms and optics. I want to minor in physics and I think I could do a lot of research there.

[PeteCorp]

Finally a good explanation. Thank you.

[ramonbarrio]

The best video I found to explain hollograms quicly but not too superficial

[bowenarrowsk]

I find the concept of a holographic film retaining the full image when cut very interesting.

[philipstuckey]

this chanel is one of the best physics channels on YouTube, watch out Derek, there's a new channel in town!

[legrandgougoulilumine]

I'm really amazed by holograms.. when you look at them up close, it's like there's a little 3D world in there.
So cool !

[MindLaboratory]

Could you please post the email you must have sent to your friends asking them to come over and walk randomly around the backyard?

[DrDrift-rlcc]

Thanks! You managed to create a really understandable explanaiton of how a hologram works without sacrificing accuracy! Much love.

[SenpaiSan]

I am honestly saying...its one of my favorite physics channel

[porkrinds]

Weak. hand-drawn teaching elements with an abundant scarcity in technical detail. Great for 3rd graders.

So much for physics, girl.



All the same, cheers for the effort.

[theoldguy]

Instruction for understanding the science of things by someone who knows how to relate to those who are not already saturated with scientific information ...it's continually interesting, amazing and wonderful.

[NickMoore]

Great explanation, the backyard-bullet time was cool too.

[whatever]

I just found this video and am really impressed with the quality that this was in 2015.

[Mikearice]

Once went to a hologram museum in Indiana (don't think it'a there anymore), and they had a hologram of Ronald Reagan. Those things are awesome but creepy looking. They're not just 3 dimensional. You can see all kinds of detail that just isn't there on a regular photograph: moisture on the eyes, light glinting off the hair on the skin. Of course there's no way to show this in a video, but it's pretty striking when you see them in person.