🎫 Holography Concept
Interactive holography simulator. Two coherent point sources (object + reference) interfere to record a fringe pattern I=|E_obj+E_ref|²; replaying with the reference beam reconstructs the wavefront — virtual (+1), undiffracted (0) and conjugate real (−1) diffraction orders. Adjust wavelength, reference angle and object position.
Frequently Asked Questions
Why does every part of a hologram contain information about the whole scene?
Because the interference pattern at any point on the hologram is formed by light arriving from all visible points of the object simultaneously. Each region records a superposition of contributions from the entire scene, making the encoding globally distributed rather than locally partitioned.
What is the holographic principle in physics?
The holographic principle, stemming from work by Bekenstein, Hawking, and 't Hooft, proposes that the information content of a region of space is bounded by the area of its boundary (in Planck units), not its volume. This suggests reality may be fundamentally lower-dimensional than it appears.
How does acoustic holography work?
Acoustic holography uses arrays of ultrasonic transducers to create precise 3D pressure fields by controlling the phase and amplitude of each transducer. This can levitate small objects, manipulate particles contactlessly, and create tactile sensations without touching the skin.
What is the difference between a hologram and a lenticular print?
A lenticular print uses a lens array to switch between a few pre-rendered viewpoints as you tilt it, giving a limited 3D or animation effect. A hologram reconstructs a continuous wavefront, providing true parallax in all directions within the viewing angle with no discrete viewpoint switching.
Can holograms be made with non-visible light?
Yes. X-ray holography uses coherent X-ray sources (synchrotrons or free-electron lasers) to image nanoscale structures. Electron holography uses coherent electron beams in a transmission electron microscope to map electric and magnetic fields at atomic resolution.
Record a hologram as interference of object and reference beams, then replay it to reconstruct virtual, real and undiffracted images.
3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install