ppf/ppfd

Abiqua

Abiqua

Well-Known Member
Is it in a square meter space?....

ppfd = ppf/m^2. a meter squared is roughly 1550 inches total

If it is not in a meter square space...no your ppfd is not 650
:peace:
 
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Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
Lol you were just gunning to shoot me down weren't you lol

If you want to be semantic then Yes PPFD is a function of watts/m2/s...

But tell me something if he has taken mulitple readings across his whole grow area and averaged it out (aka 650) then what do you suppose the PPFD reading is for the area as whole... which was in fact the OP's original question!

More to the point how can the average amount of photons over the given area be more/less than the average reading...Unless of course you have got an alternative answer rather than a semantical one;)???
 
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Abiqua

Abiqua

Well-Known Member
Johnnycannaseed1 said:
Lol you were just gunning to shoot me down weren't you lol

If you want to be semantic then Yes PPFD is a function of watts/m2/s...

But tell me something if he has taken mulitple readings across his whole grow area and averaged it out (aka 650) then what do you suppose the PPFD reading is for the area as whole... which was in fact the OP's original question!

More to the point how can the average amount of photons over the given area be more/less than the average reading...Unless of course you have got an alternative answer rather than a semantical one;)???
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im trying to figure out what any of it has to do with calculating ppfd......the rest is arbitrary as they say....or maybe you were thinking Daily light integral. dli.......
 
Abiqua

Abiqua

Well-Known Member
Johnnycannaseed1 said:
I heard a good proverb today it goes a little something like this;

"Do not argue with an idiot, because they will drag you down to their level and beat you with experience."

So on that note I give up!
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thanks i guess.....am i supposed to take it personally? im sure your a hoot at parties bygolly
 
Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
And your lack of an "Actual" answer to the OP's original question about "Density" is noteworthy, hence I am not trying to get into any type of argument with you lol!
 
OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
abiqua..thanks i there may be more to it..but johnny [thank you]more or less helped me understand it for the first time

that its less rocket science and why should it be if evey thing else is basically constant??

all the other times people made it sound like voodoo..especially if "over time" is involved..

..yes its basically a square meter..

and the bars have cobs equidistant from each other..i got 650on the par meter basically where ever i put the sensor and tried to keep it

the same distance..


quote:
But tell me something if he has taken mulitple readings across his whole grow area and averaged it out (aka 650) then what do you suppose the PPFD reading is for the area as whole... which was in fact the OP's original question!
 
Abiqua

Abiqua

Well-Known Member
ok you guys make your own lighting rules .......a spot reading of ppfd is just a spot reading correct and you can average it correct....but averaging has nothing to do with calculating ppfd......not sure why imgettng brush back here on this....forgive mefor providing an answer in a public forum.....what was ithinking :peace:
 
Abiqua

Abiqua

Well-Known Member
Johnnycannaseed1 said:
And your lack of an "Actual" answer to the OP's original question about "Density" is noteworthy, hence I am not trying to get into any type of argument with you lol!
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what dude.....what does density have to do with it....enlighten us please. sorry itook all your moms jelly beans last night....didnt think you would be mad too
 
Abiqua

Abiqua

Well-Known Member
Johnnycannaseed1

Johnnycannaseed1

Well-Known Member
@Abiqua you did not answer anything, you only tried to argue semantics, which is just plain silly and most unhelpful and with your childish jibes about jelly beans this is exactly why I would not even argue with you:lol:

You are right OLD MOTHER SATIVA some people just like to plain over-complicate things in order to pretend that they are preaching rocket science... There is nothing more to it than averaging multiple readings across the area in order to get the average PPFD reading...

In this case it just so happens that the placement of each of your COBs ( I am guessing) is producing a uniform distribution of light across the whole area, which means your fixture is nicely optimized, so well done on that:clap:
 
Abiqua

Abiqua

Well-Known Member
ok...who wants a density question......which has more "density" ......a 650 ppfd light at 12 in. or a 650 ppfd light at eighteen inches.....?
 
Abiqua

Abiqua

Well-Known Member
Johnnycannaseed1 said:
@Abiqua you did not answer anything, you only tried to argue semantics, which is just plain silly and most unhelpful and with your childish jibes about jelly beans this is exactly why I would not even argue with you:lol:

You are right OLD MOTHER SATIVA some people just plain like to over-complicate things in order to pretend that they are preaching rocket science... There is nothing more to it than averaging multiple readings across the area in order to get the average PPFD reading...

In this case it just so happens that the placement of each of your COBs ( I am guessing) is producing a uniform distribution of light across the whole area, which means your fixture is nicely optimized, so well done on that:clap:
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there isnt an argument.....dont get me stated on posting your yesterdays rant fuck face......did greengenes also bang your mommy
 
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