HealthJuly 30, 2026

lux

LUKS

Definition

A standardized unit of measurement in the International System of Units (SI) that quantifies the intensity of light falling on a specific surface area.

Etymology

Derived directly from the Latin word 'lux', meaning 'light', which has been used in scientific contexts since the late 19th century.

In the news

In the article, lux is used to quantify the intensity of daylight exposure required to potentially benefit brain health, illustrating that natural outdoor light is far more intense than typical indoor lighting.

40 a day could protect the brain and reduce dementia risk

Read the full article ↗

The Jerusalem Post

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