A nanometer is a metric system unit that equals a billionth of a meter. Nanometer (nm) is also used to describe the wavelength of light.
- Red light has a wavelength of 650 nm
- Blue light has a wavelength of 450 nm
Learn all about growing and lighting:
- The Cannabis Light Cycle
- Control Your Lighting, Control Your Cannabis
- How Much Sunlight For Outdoor Marijuana Plants
More lighting related terms:
Lighting | Light cycle | Dark cycle | Light shortage | Light distribution | Light spectrum | Blue light | Red light | Light tight | Lumen | Lux | Reflecting light | Lamp height
HPS lights | HPI lights | LED lights | Compact fluorescent lights
