light output

Listing 1 - 10 from 42 for light output

anyone experimented w/vho or compact fluorescents and av's? - African Violets Forum - GardenWeb
... light now, though, and wondering if anyone has any advice/pointers/websites to check for info on growing African Violets under VHO (Very High Output ... weekend in our club we tried to measure the light output from the CFLs with a light meter. 10 watt - is way too low, 27 ... small arrangement where you can have several violets and low light requirement green plants. And do not wait till spring. These ...
forums.gardenweb.com

Winter tomato experiments - Growing Tomatoes Forum - GardenWeb
... sake. > LED is highly unpractical at this point. Way too > expensive, way too low in light output, way too big > fixtures. Each person has to decide what is practical for their particular ... in the right places. Also, standard lighting always rates their light output in lumens (non-directional light), whereas LEDs are rated in millicandelas (light in a certain direction). There's no hard and fast ...
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Some data on commonly available fluorescent tubes
... The newer, wide spectrum bulbs have a much more even spectral output. It rises at 400 nM, peaks almost immediately, stays more or ... Watt information. Instead they provide a "relative light output" figure, which seems to be the percent of light (more or less) radiated than a cool ... Ultralume 50's are so well respected. They have a horrible output spectra, flat, low, with a small peak in the violet blue ...
retirees.uwaterloo.ca

Apogee Instruments Inc: Company Info
... FAQ: Conversions CONVERSION: Instantaneous PPF to integrated PPF Most light meters measure the instantaneous photosynthetic photon flux in µmol m- ... . There are 3600 seconds in an hour. If the electric light output is constant, the instantaneous PPF can be added up (integrated) ... s-1 = 0.0864 mol m-2 d-1 with continuous light These conversions are accurate only under electric lights. The integrated ...
www.apogee-inst.com

CONVIRON - SALES - PRODUCT INQUIRY FORM
... specification. What is your research application? What size chamber do you require? What type of light output do you need? Do you require humidity? If yes, specify range? What are your electrical ...
www.conviron.com

Carsten's Orchid-Depot and Orchid Shop
... light level changes dramatically. The light meter is also useful to check the output of your fluorescent tubes and other artificial grow lights. As they age the light output can drop 30 - 40% and you won't notice it with your eyes. - Get the light ...
www.orchid-depot.com

Dec 2003
... to die as light and temperature steadily worsen as mid-winter comes upon them! Light Plants grown under blue light produce stocky short ... four 4-foot 40 watt cool white flourescent bulbs. Light fixtures: Flourescent light fixtures consist of a metal box that contains wiring ... time of about 7000 hours and they gradually diminish in light output over this period. Humidity: It is not too difficult to ...
www.soos.ca

More about light and lighting
... a light meter located on the surface. Units for Lighting Lumen: The most common measurement of light output (or luminous flux) used to label light sources as a measure of their total light output. 1 lumen = 0.00146 W Footcandle: light intensity or illuminance defined as the amount of light ...
www.succulent-plant.com

The Succulent Plant Page: Glossary of Botanical Terms
... for capture of energy from sunlight (photosynthesis) using chlorophyll contained in chloroplasts, thin to allow light to penetrate the tissues and oriented to optimise exposure to sunlight. In most plants, leaves ... of light output (or luminous flux) used to label light sources as a measure of total light output. 1 lumen (lm) = 0.00146 W. A unit of luminous flux equal to the amount of light given ...
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GrowGuide Sample Output - Weekend Gardener
... GrowGuide Sample Output - Weekend Gardener GrowGuide FAQ (Frequently Asked Questions) Back to GrowGuide What are frost dates? Frost ... sow seeds or set out transplants. Some plants, like pansies and broccoli, can shrug off light frosts, but other plants, like tomatoes and marigolds, need warmer conditions. You need to know ...
www.chestnut-sw.com

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