Where Should a Light Dosimeter Be Worn? A Practical Guide
Introduction When using a wearable light dosimeter, positioning is one of the most important factors affecting data accuracy and user […]
Lighting in Hospitals: healthy light for patients and staff
Hospital lighting needs to protect patient rest and keep clinicians alert at all hours. This page outlines day–night lighting strategies,
Healthy Light Exposure: a practical daily guide
Healthy light exposure isn’t just “more light” or “less blue at night”. It’s the right spectrum, at the right time,
Chronotype
Definition:Chronotype describes an individual’s natural preference for the timing of sleep and daily activity (for example, “morning lark” or “night
How spectral light dosimeters could improve hospital night-shift conditions
Night-shift lighting must keep clinicians alert while protecting patient rest. This guide shows how spectral light dosimeters can quantify real
Human-centric Lighting in Aged Care: benefits and challenges
Human-centric lighting (HCL) can improve sleep, mood and safety in aged-care settings — but it must be done carefully. This
Circadian Rhythms
Definition:Circadian rhythms are natural, internal processes that repeat roughly every 24 hours, regulating the timing of physiological and behavioural functions.
Chronobiology
Definition:Chronobiology is the scientific study of biological rhythms and their regulation. These rhythms include circadian rhythms (around 24 hours), ultradian
Suprachiasmatic Nucleus (SCN)
Definition:The suprachiasmatic nucleus (SCN) is a small region of the brain located in the hypothalamus, directly above the optic chiasm.
Alpha-opic Irradiance (and Illuminance)
Definition:Alpha-opic quantities weight light according to the sensitivity of the eye’s five photoreceptors, as defined in CIE S 026. The