The document compares sunlight to artificial lighting for growing fruit. It discusses using four 48-inch T8 broad spectrum fluorescent ceiling lights with ceiling diffuser panels and one 48-inch shrouded T8 under cabinet light. The lights provide high efficacy, long life, and no flicker, glare or hum. They have a color rendering index of 85% and color temperature of around 5000K, seeking to mimic the qualities of natural sunlight.
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Fluorescent light effects compare to natural sun
1. Anthony Stewart 23 Feb,
2011
Effects of Lighting on Fruit
1. Compare Sun with artificial light
2. (4) 48 T8 broad spectrum ALTO
Fluorescent ceiling lights &
ceiling diffuser panels
3. (1) 48 shrouded T8 under
cabinet cast down only
Warm 85% colour CRI
broad spectrum fluorescent
tubes give high efficacy (89lpw)
and long life 40kh) with no
flicker, glare or hum.
F32T8/TL850/ALTO TG Philips
2. Anthony Stewart 23 Feb,
2011
Natural indirect SUN light from the
kitchen window reflecting off the orange.
CCT ~5000K CRI =100%
Sun<window
Light taupe paint
3. Anthony Stewart 23 Feb,
2011
Broad Spectrum Alto 4x 48 T8s overhead
CCT=5000K CRI=85%
Sun<window
Ceiling T8x4
4. Anthony Stewart 23 Feb,
2011
Broad Spectrum Alto single 48 T8 over stove
CCT~4500K CRI=85%
Sun<window
Ceiling T8s
UnderCabinetT8x
Warmer mushroom
brown