Abstract Plant enthusiasts, entrepreneurs, and farmers usually have more than one plant that needs to be looked after every day. Lack of water unproportioned sun light can a serious problem if they leave the for long period time. An Internet Things (IoT) based automatic remote sprinkler with cover was designed solve this problem. This system eases users monitoring condition plants without havin...

Phototoxicity and photoallergy are different expressions of an abnormal skin reaction from the exposure to light, usually enhanced by endogenous or exogenous substances that are selectively activated by solar radiation. This can occur with artificial light sources (sun lumps used for aesthetic or therapeutic purposes or ultraviolet (UV) sources in occupational settings), but mostly occur on sun...

18 Background and aims: Most optical devices for indirect measurement of leaf area 19 index (LAI) from canopy-transmitted light are tailored for homogeneous canopies, thus 20 limiting their application to discontinuous canopies such as vertically trained vineyards. 21 This study evaluates the influence of sun position on the reliability of LAI estimates 22 provided by a ceptometer and proposes ...

This paper discusses the evolution of the SS-411 series digital sun sensor. The earlier SS-256 and SS-330 models have proven themselves in orbit on low cost satellite missions. The SS-411 represents a further hardware revision with enhanced robustness and improved attitude estimation performance. To complement the latest hardware improvements, researchers in the Space Avionics and Instrumentati...