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Category: Lighting Science

May Scoop Light Science CMH Lamps – The Science Behind the Hype

Light Science May 2018 CMH Lamps – The Science Behind the Hype CMH Lamps – The Science Behind the Hype First distributed into commercial applications in the mid-90s, ceramic metal halide (CMH) lamps have advanced significantly over the past twenty years. As the technology has improved and awareness increased over […]

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LIGHT SCIENCE March 2018 The perils and pitfalls of dimming HID lamps

LIGHT SCIENCE March 2018 The perils and pitfalls of dimming HID lamps The perils and pitfalls of dimming and overdriving HID lamps HID systems for plant growth are dimmed for a variety of reasons. Whether to simulate sun-up / sun-down or to reduce light levels while saving energy, some brands […]

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LIGHT SCIENCE February 2018 Ultraviolet UV radiation Artificial Light Sources biological photochemical reactions

Ultraviolet Radiation – Artificial Light Sources Ultraviolet (UV) radiation has long been known to be quite important in biological photochemical reactions. Anthocyanin and other flavinoid pigments absorb blue and UV light to protect chlorophyll from photo-destruction. UV-A, or near UV, is comprised of energy between 315 nm and 400 nm […]

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LIGHT SCIENCE HID Spectrum – Far Red Influences

LIGHT SCIENCE HID Spectrum – Far Red Influences Far red radiation, typically described as energy between 700 and 800nm, (Figure 1) is very influential on extension growth, meaning it influences the size of leaves and the length of stems. For some plant species, flowering is accelerated most when photoperiodic lighting […]

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LIGHT SCIENCE Day Light Interval Simply Explained

LIGHT SCIENCE: Day Light Interval… Simply Explained Day Light Interval Day Light Interval (DLI) is the cumulative amount of light energy for a given area over a one-day period, expressed in moles per meter squared per day (mol/m2/day). In general, increasing light photons over a day period increases photosynthesis thereby […]

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Lighting Science: The science behind ceramic metal halide

The science behind ceramic metal halide Ceramic metal halide (CMH) lamps have recently taken the hydroponic industry by storm. First sold to the commercial/industrial market in 1994, CMH is a relatively new technology, especially when compared to HPS which has been available for over fifty years. Good CMH lamps are […]

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