"Alan Gould" wrote in message
...
In article , Franz Heymann
notfranz.
writes

My problem is essentially to find out quantitatively how many
lamps,
of what power, at what distance from the plants, to use.

The manufacturers will almost certainly be able to advise you on
that.

But I don't necessarily want to use any lamps sold as horticultural
apparatus, because the chances are that I will decide on using a
battery of ordinary household bayonet fitting fluorescent lamps,
because they are items which we use in the house anyway. I have
looked at their spectra, and they are as best I can judge identical
with those of the lamps usually used in horticultural circles.
Essentially, the information I want is
How many lumens per square metre do I need for overwintering rooted
cuttings of typical hardy plants?
How many lumens per square metre does the lamp provide at specific
distances?

Franz

"Franz Heymann"
snip
How many lumens per square metre do I need for overwintering rooted
cuttings of typical hardy plants?
How many lumens per square metre does the lamp provide at specific
distances?
Franz

Hi Franz
Here are some technical sites for you. i don't know if they will help as I don't
understand a word of the content :~)

http://www.littlegreenhouse.com/guide3.shtml
http://homeharvest.com/growlightglossary.htm
http://www.growell.co.uk/g/4/The_GroWell_GroW_Tent.html
http://generalhorticulture.tamu.edu/...ght/light.html
http://www.specialty-lights.com/plan...questions.html
http://www.shroomery.org/index/par/23844

Plus loads more via google with light lumen indoor plant as search
words..........
jenny

"JennyC" wrote in message
...

"Franz Heymann"
snip
How many lumens per square metre do I need for overwintering
rooted
cuttings of typical hardy plants?
How many lumens per square metre does the lamp provide at specific
distances?
Franz

Hi Franz
Here are some technical sites for you. i don't know if they will
help as I don't
understand a word of the content :~)

http://www.littlegreenhouse.com/guide3.shtml
http://homeharvest.com/growlightglossary.htm
http://www.growell.co.uk/g/4/The_GroWell_GroW_Tent.html
http://generalhorticulture.tamu.edu/...ght/light.html
http://www.specialty-lights.com/plan...questions.html
http://www.shroomery.org/index/par/23844

Plus loads more via google with light lumen indoor plant as
search
words..........

Thanks, Jenny. It will take some time to wade through that lot!

Franz