bare
ROOTS
VOLUME 20 – NUMBER 3
June 2018
Featured Contributors
EH Eric Hopper’s past
experience within the indoor
gardening industry includes
being a hydroponic retail store
manager and owner. Currently,
he works as a writer, consultant,
and product tester for various
indoor horticulture companies.
His inquisitive nature keeps
him busy seeking new
technologies and methods
that could help maximize a
garden’s performance.
SK Shannon McKee lives in Ohio
and has been a freelance writer
for several years now, including on
her blog, whyiwah.blogspot.com.
Nicknamed by loved ones a
garden hoarder over the past few
years, she grows a wide variety of
plants in her urban garden.
Contributors
+
A
Lee Allen
Wiley Geren
Rich Hamilton
Kyle L. Ladenburger
Monica Mansfield
Philip McIntosh
Dr. Lynette Morgan
Frank Rauscher
Bryan Traficante
NANOMETER
Nanometer (nm) is a term that comes up frequently when researching grow
lights. A nanometer is a unit of spatial measurement that is one-billionth of a
full meter. When used in reference to horticultural lighting, a nanometer is the
measurement of the color of light that is being put off by a light source. The
visible light spectrum (which is only a part of the global radiation spectrum) is
measured in nanometers, with ultraviolet light being near the 400 nm range,
and infrared light being near the 700 nm range. This range is referred to as
photosynthetically active radiation (PAR).
Check out Eric Hopper’s feature article on page 42 for more information.
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