En 30 segundos
The narrator shows a laser-illuminated hologram that appears to contain objects behind glass, then a recorded microscope through which a microchip can be seen. The short clip is an excerpt from a longer explanation of holography.
- 1Changing perspectiveMoving the viewer changes the apparent view of the recorded scene.
- 2An empty tableLaser light reveals the hologram even though the original scene is absent.
- 3A microscope in a hologramThe recording lets a viewer see a microchip through the apparent microscope.
Conclusiones
- A hologram can produce visual depth cues from a flat recording.
- Changing the viewing position changes the apparent perspective.
- The recorded scene can appear present even when its original objects are absent.
Lee el texto editado por capítulos
Two hologram demonstrations
The narrator shows a recorded scene and a microscope hologram.
A piece of glass appears to contain a three-dimensional scene. As the viewer moves, the apparent objects change perspective, and a glass Klein bottle seems to distort what is behind it.
The narrator reveals the setup: the table behind the glass is empty, and a diverging laser illuminates the hologram. The visual cues make the recorded scene feel present even though the original objects are not there.
Another hologram records a microscope. From the right viewing position, a person can look down its apparent barrel and see the recorded image of a microchip, illustrating how a flat recording can reproduce a three-dimensional view.
Más de este canal
40:44EN
3Blue1Brown· 16 oct 2026Grant Sanderson: There's never been a better time to go into mathGrant Sanderson, Constantin Kogler · 3Blue1BrownStudents fear AI has solved mathematics. Grant Sanderson argues the opposite: even if machines prove theorems better than we do, the institution of math stays valuable—and this is a rare moment when newcomers can reshape it.
51:55EN3Blue1Brown· 18 sept 2026The last IMO problem AI could not solveGrant Sanderson · 3Blue1BrownGrant Sanderson walks through IMO 2025 Problem 6 — a tiling puzzle that frontier models missed — and the visual patience it takes to prove a construction is optimal.
0:55EN3Blue1Brown· 24 jul 2026The 64 Sugar Cubes Puzzle: Six Equal DistancesA 4×4×4 block has three colors; prove that six same-colored pairs share a distance.
33:51EN3Blue1Brown· 16 jul 2026What Cross-Entropy Connects: Compression, Language Models and KL DivergenceGrant Sanderson · 3Blue1BrownGrant Sanderson builds cross-entropy from code lengths and uses it to explain next-token training and distillation.
2:25EN3Blue1Brown· 12 jun 2026How Shannon Measured the Entropy of EnglishA guessing game helped Claude Shannon estimate how much information English text contains, and why prediction is central to compression.
1:02EN3Blue1Brown· 10 jun 2026A Robot Walk and the Puzzle of Optimal Binary EncodingHow few bits does it take to send directions that occur with unequal frequencies?