PRESS ROOM

Supplemental electric lighting for greenhouses may be essential for extending the growing season in northern climates, but it comes with a not-so-hidden cost: environmental light pollution. The consequences of this pollution may range from irate neighbours in rural...

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Lighting designers will be familiar with the illuminance of a planar surface, which is measured in lumens per square meter (or foot). The irradiance of a planar surface by a germicidal radiation source is conceptually the same, except that it is measured in watts per...

There is a newcomer on the block that has gained considerable media attention: far-ultraviolet excimer lamps. Recent medical studies have indicated that, unlike 254 nm radiation, the 207 nm and 222-nm “far-UV” radiation emitted by excimer lamps is likely harmless...

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

Going Green – Lighting Designing for Horticulture Synopsis Ian Ashdown, P. Eng. (Ret.), FIES The future of food security in Canada is in greenhouses and vertical farms – controlled environments where unseasonable weather is not a concern. There are 17 million square...

“Perfectly reasonable and valid scientific information is endlessly repeated and distorted from paper to press release to mass media articles” https://www.allthingslighting.org/index.php/2021/01/04/ultraviolet-radiation-and-viral-misinformation/

We're excited to share Ian Ashdown's latest published article in Fires - IES https://www.ies.org/fires/ultraviolet-radiation-terminology/