Illuminating the limits of the international unit of light, the candela

The candela, the international unit of light for nearly a century, underpins how we measure brightness. But per Phys.org, a new study finds these measurements systematically misjudge the brightness of colored light sources, departing markedly from human perception.

Listen to this story

Hear this and more stories in a personalized audio briefing.

Open The Chonkerton