Optics

High-Tech Trompe l'Oeil


Dennis Gabor’s invention of holography in the 1940s earned the physicist a Nobel prize. Development of the laser popularized holograms starting in the ’60s. Yet, much of what passes as holography—including the recent Tupac resurrection—is actually a centuries-old optical trick known as Pepper’s ghost.

Lindblad_190
Lindblad is an associate news editor for Bloomberg Businessweek.

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