Scientists invent topological-cavity surface-emitting laser

Semiconductor lasers are the most widely used lasers due to their compact size, high efficiency, low cost and wide spectra. But they suffer low output power and low beam quality—two specifications difficult to improve simultaneously. ...

Selling voyeurism: How companies create value from the taboo

What do reality television, slum tourism, erotic webcam and mixed-martial arts have in common? They all rely on voyeurism to entertain their audiences. Voyeurism provides a glimpse into the private life of another person ...

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