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InvisibleDoPeYsMuRf

Registered: 08/13/09
Posts: 645
More talk about LED's
    #408329 - 04/28/10 05:59 PM (14 years, 9 months ago)

Aight, I've made it a personal mission to find out anything and everything about LED's because they are supposed to be the "future" of growing.

In the past month I've read well over 100 studies from a variety of plant physiology and optics journals.

I've also scoured over space research and the advances NASA continues to make.

The consensus is in. LED's blow.

NASA continues to use them only as supplemental lighting to high-output florescence.

They have switched gears and are now trying to improve the plants.

You can grow like NASA and make up 1000, 42 square inch growth chambers.

But honestly, we live on earth. We are not growing in space...



The problem with LED's is that they can only use so much power.

When you hear that they are making huge advances in LED technology, that's true.

But it's primarily ways of maximizing the energy in the already highly advanced LED's available.

Flouro's continue to out-produce LED's. Fact.


http://www.nasa.gov/home/index.html#
http://www.opticsinfobase.org/
http://www.plantphysiol.org/
http://www.opticsjournal.com/
http://www.osa.org/journals/osajournals/

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InvisibleDoPeYsMuRf

Registered: 08/13/09
Posts: 645
Re: More talk about LED's [Re: Stoneth]
    #408843 - 04/29/10 02:36 PM (14 years, 9 months ago)

Quote:

stoney.69 said:
Quote:

DoPeYsMuRf said:


Flouro's continue to out-produce LED's. Fact.





You have got to be kidding me.





No, I'm not kidding. All the information I viewed was from peer reviewed articles.

That pictorial came from someone selling LED's.

You can't use it as an argument because it's completely bias for the simple fact that it is coming from a vendor.

The articles I read where in controlled environments not trying to prove if one was better than the other.

Only trying to find out what is better.

What controls did she use? Where's all her info?

Just by looking at the pictures I notice both sides are using different spectrum's of light.

Any self respecting scientist would reject this experiment on that aspect alone.

Just pictures prove nothing. By selling the product she clearly could have other motives trying to say "Oh, my product is better".

Being a contest discredits everything in that thread.

Everyone submitting info had something to gain.

The only results that are posted are the ones they wanted. How else can you win her contest.

I can believe her pictorial or I can believe the people who have been studying it for years and are the actual ones making all the advancements.

Go on the sites I listed and read for yourself. There's literally 10's of thousands of articles on the subject.

Plenty of proof supporting my claim.

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InvisibleDoPeYsMuRf

Registered: 08/13/09
Posts: 645
Re: More talk about LED's [Re: Stoneth]
    #409679 - 04/30/10 07:52 PM (14 years, 9 months ago)

Quote:

stoney.69 said:
Man maybe you should read over that forum not just that one post.

Watt per watt no flouro compares to LED.




Actually, I'm an avid reader of ICMAG along with a bunch of other growing forums.

How else would I have known that thread was derived from a contest?


Here's one experiment(out of thousands) that I found quickly that might be a good read for you.

"best-performing LED replacements could not deliver even one-half the light output of the benchmarked fluorescent sources"

http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/troffer_benchmark_01-09.pdf

I know you whole heartily believe what your saying is correct but I just want to flood people with the data they don't normally see because it's hard to find.

Bias pictorials are a dime a dozen.

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InvisibleDoPeYsMuRf

Registered: 08/13/09
Posts: 645
Re: More talk about LED's [Re: Harry_Ba11sach]
    #409696 - 04/30/10 08:21 PM (14 years, 9 months ago)

Yah, I guess anything could be considered bias.

I'd rather take the word of our United States department of Energy over a bunch of people just sticking 2 lights next to each other with no knowledge of how lights even work.

CALiPER is actually a program by our government made to compare the lights to help LED's in our marketplace.



"The U.S. Department of Energy (DOE) is a federal agency working in the public interest. Published information from the DOE SSL CALiPER Program, including test reports, technical information, and summaries, is intended solely for the benefit of the public, in order to help buyers, specifiers of new SSL products, testing laboratories, energy experts, energy program managers, regulators, and others make informed choices and decisions about SSL products and related technologies."

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InvisibleDoPeYsMuRf

Registered: 08/13/09
Posts: 645
Re: More talk about LED's [Re: Crusty Ass Bastard]
    #411020 - 05/03/10 01:12 PM (14 years, 9 months ago)

I'm all for the best lighting solution. It's just from all the studies I find tend to say the same thing.

I would love to find a real study showing LED's are superior but I just can't.

Yes the last study I posted was from 15 years ago but every study I've read following that date has had the same results.

What makes LED's more efficient is that they last longer, use less electricity, and the ability to aim the light like you said, directional. But that's really a tricky statement if you start thinking about it.

Flouros send light in all directions which means you need a reflector to aim your light. LED's just being directional constitutes the claim of being more efficient, but like the study I posted shows, more efficient doesn't always mean better quality of light.

I think what makes LED's a better solution for streetlight and such is the fact that they do last longer. It's not because they put out more light.

When cities make decisions like this they take literally everything into account. The gas cost from traveling all the way down to the wage they have to pay the crews to change out the light.

It's very easy to see that in situations like this it would be more efficient to use LED's. But still, is a better quality of light produced?

I'm trying to show there is a difference when you take everything into account.

Yah, your right when you say I haven't grown with them and my claim towards plant growth is all hypothetical but I still stand by my claim because I have seen the proof and the studies behind it.

LED can only be so big and can only produce so much light. When you calculate how much physical space they could possibly occupy, along with how much light they can actually produce, the math proves they are inferior QUALITY of light.

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