World’s smallest bulb created

A team from the University of California Los Angeles has created the world’s smallest incandescent lamp. The UCLA team is using it to study physicist Max Planck’s black-body radiation law, derived in 1900. The lamp uses a filament made from a carbon nanotube only 100 atoms wide. To the unaided eye, the filament is invisible when the lamp is off, but it appears as a tiny point of light when the lamp is turned on.

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