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Cerise365 and DAYSIM

Cerise365 and DAYSIM

Cerise365™ and DAYSIM are daylighting analysis software programs that perform climate-based annual daylight simulations, including the calculation of annual daylight metrics. This white paper compares their performance in terms of accuracy and calculation times....
Specifying LED Colors for Horticultural Lighting

Specifying LED Colors for Horticultural Lighting

When the first high-pressure sodium (HPS) lamps were introduced in the late 1960s, they were quickly adopted by commercial greenhouse operators as a means of providing supplemental electric lighting. This made it economically possible to grow vegetables and flowers...
Filtered LEDs and Light Pollution

Filtered LEDs and Light Pollution

The problem is astronomical — the blue light emitted by LED roadway luminaires has been shown to contribute to light pollution, especially when cool white LEDs are used. Blue light is preferentially scattered by air molecules, and so the higher the correlated color...
Ultraviolet Radiation Terminology

Ultraviolet Radiation Terminology

In Ultraviolet Radiation Terminology, SunTracker Technologies’ Senior Scientist, Ian Ashdown dares to get pedantic about how we describe ultraviolet radiation. Do the terms we use really mean what we think they mean? Could we be describing them more accurately?...