How 3D holograms work | Summary and Q&A

463.5K views
September 15, 2015
by
Physics Girl
YouTube video player
How 3D holograms work

TL;DR

Holograms appear 3D but are actually flat, 2D films with motion parallax and stereoscopic views.

Install to Summarize YouTube Videos and Get Transcripts

Questions & Answers

Q: How do holograms appear 3D even though they are flat films?

Holograms create the illusion of depth through motion parallax, where foreground objects appear to shift faster than background objects, and stereoscopic views, which present different images to each eye, creating a perception of depth.

Q: What differentiates holograms from 3D movies?

Holograms offer motion parallax, stereoscopic views, and the ability to show different images based on the viewer's position, while 3D movies only provide a simulated sense of depth without these additional features.

Q: How are holograms created?

Holograms are made by splitting a laser beam into two, with one beam reflecting off the object being imaged and the other serving as a reference beam. When the coherent laser beams meet, they create interference patterns on holographic film, encoding 3D information about the object.

Q: Can holograms show the entire object even when cut into smaller pieces?

Yes, holograms carry information about the entire object, so even a small square cut from the hologram can display the complete image. This is not possible with regular photographs.

Summary & Key Takeaways

  • Holograms are 3D ghost-like images that give the illusion of depth but are actually flat films with motion parallax and stereoscopic views.

  • Unlike regular photographs, holograms show different images depending on the viewer's position.

  • Holograms are created using lasers to generate interference patterns that encode 3D information onto holographic film.

Share This Summary 📚

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on:

Explore More Summaries from Physics Girl 📚

Summarize YouTube Videos and Get Video Transcripts with 1-Click

Download browser extensions on: