The effectiveness of two types of steady and flashing lights as escape hatch indicators for submerged helicopters was compared. Measurements were taken in moderately and highly turbid water. Response time was faster to the steady lights, and they were more accurately localized. Pairs of steady lights appeared to have some advantage over single lights, but this was not true for flashing lights. ...

Objective: It is believed that drivers play a crucial role in accidents. Paying attention to brake lights, a driver may find out about danger and react. Rear-end collision accidents refer to the part of the accidents due to driver inattention or slow reaction. The aim of this study was to determine the effect of dynamic flashing brake lights (7 Hz) on drivers' brake reaction time using the driv...

Dynamic illumination in real-time applications using OpenGL is still usually done with the classical light forms of point lights, directional lights and spot lights. For applications simulating real-world scenes, e.g. architectural planning, finding parameter sets for these simple lights to match real-world luminaires is required for realistic work. This paper describes a simple approach to pro...

EPIC's photonics technologies program manager Jérémy Picot-Clémente talks to Stephan Berlitz, head of Audi lighting development.

The present study analyses the new Visible Infrared Imaging Radiometer Suite (VIIRS) lights data to determine whether it can provide more accurate proxies for socioeconomic data in areas with poor quality data than proxies based on stable lights. Our analysis indicates that VIIRS lights are a promising supplementary source for standard measures on population and economic output at a small scale...

abstract the growth is a one of biological aspects of fishes and is a good index in order to determine of health of these population. the aim of this study was to investigate the effect of different color lights on condition factor and weight- length relationships (lwr) of rainbow trout. fertilized eggs of fish were kept under light conditions, 14h light and 10h dark for 5 months at seven light...

We examined the changes in stimulus control occurring during guided skill learning in rats. Twenty rats were trained to complete a left-right sequence of lever presses guided by the onset and offset of panel lights over their respective levers. Once sequence accuracy was high and stable, the rats were divided into two groups. For the No-Lights group, the lights were eliminated without changing ...