Into the Daylight

The Owl in Daylight

Transition into daylight saving time influences the fragmentation of the rest-activity cycle

BACKGROUND Daylight saving time is widely adopted. Little is known about its influence on the daily rest-activity cycles. We decided to explore the effects of transition into daylight saving time on the circadian rhythm of activity. METHODS We monitored the rest-activity cycles with the use of wrist-worn accelerometer on a sample of ten healthy adults for ten days around the transition into s...

The Chemistry of Daylight Vision

1. While several reports of photosensitive pigments from the retinas of animals possessing large numbers of cone cells have been published, the only study which could be confirmed was Wald's discovery of iodopsin, a red-sensitive pigment from chicken eyes. 2. In its chemical properties, such as the range of pH stability and the effect of polar organic solvents, iodopsin resembles rhodopsin but ...

A Study Into the Effects of Types of Light on Children - A Case of Daylight Robbery

Based on a review of the literature and a pilot study conducted from 1981 to 1985, a study was carried out that examined physical development and school performance effects of different lighting systems on elementary students. Students’ dental health, growth and development, attendance, and academic achievement were examined under four different types of lighting: (a) full spectrum fluorescent ...

Daylight Theory Manual

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