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Q: Electroluminescent and the effect on the human eye ( No Answer,   10 Comments )
Question  
Subject: Electroluminescent and the effect on the human eye
Category: Science
Asked by: lightme-ga
List Price: $75.00
Posted: 02 Feb 2006 19:23 PST
Expires: 04 Mar 2006 19:23 PST
Question ID: 440753
Does the frequency of electroluminescent lighting materials have a
distinct measureable effect on the human eye? Why is the human eye
attracted to this light source in various dark or dusk lighting
conditions?
Answer  
There is no answer at this time.

Comments  
Subject: Re: Electroluminescent and the effect on the human eye
From: knickers-ga on 03 Feb 2006 04:59 PST
 
Not being an expert here, I suspect that any measureable affect is
entirely dependent on the actual wavelength of light that you are
talking about. On a more general note I dont think the human eye is
particularly attracted to this sort of light versus any other (what is
your hypothesis / evidence for this?). The human eye is extremely
sensitive to any light and hence in low light conditions will
naturally deviate to any light source.
Subject: Re: Electroluminescent and the effect on the human eye
From: lightme-ga on 03 Feb 2006 21:37 PST
 
knickers-ga

Thank you for your comments.
My hypothesis / evidence is only of my own experience with this light
source in applications and therefore I post the question looking for
someone that may have experience and formal answers to my question.
Subject: Re: Electroluminescent and the effect on the human eye
From: stanmartin1952-ga on 04 Feb 2006 18:24 PST
 
It may be like seeing a welding torch - it's hard not to look at it.
Subject: Re: Electroluminescent and the effect on the human eye
From: cplusplusgenius-ga on 05 Feb 2006 16:28 PST
 
The main effect of electroluminescent lights or similar light source
is not on the human eyes (the sensors that transform lights are
located in the retina and are stimulated by all the visible light
frequencies) but on the neural control system that receive the signals
coming from the eyes. In fact there are many mathematical models of
this system (try to search in scientific literature regarding
biological systems modeling)that demonstrate that this system is
derivative, in other words the system is alerted by rapid variations
referring to the background conditions (lightness, contrast, spatial
velocity). An electroluminescent light represents often an isolated
object showing an high contrast (rapid spatial variation in 
lightness) respect to the background. The same thing can occour if,
during a sunny day, we see a dark spot in the sky. Our attention is
automatically attracted by this spot because our neural control system
is derivative. This occour also if our attention is attracted by other
things or while we are doing other jobs. Naturally this control system
is useful in order to focus our attention on things that are
"different" from the background, things that change their condition
fast and that could be dangerous. Bye.
Subject: Re: Electroluminescent and the effect on the human eye
From: lightme-ga on 05 Feb 2006 17:54 PST
 
cplusplusgenius-ga

Now that is the type of answer or comments that I am looking for.
How can we talk further and discuss your comment further.
Unfortunately someone has made an attempt at my answer and has claimed
the money and I am not sure if I will get it back, however I would be
happy to pay you very well for additional information that you can
give me.
Subject: Re: Electroluminescent and the effect on the human eye
From: myoarin-ga on 06 Feb 2006 12:07 PST
 
HI Lightme,
IT seems that Cplusplusgenius and Knickers have understood what your
question really is about  - how the eye and brain perceive light (or a
light source) at dusk.  The emphasis on EL in the question distracted
from this and led Hedgie to pursue that subject, although it should be
pointed out that the last part of the Answer also deals with this.
In light of your long study of EL, I can understand that it could be
your primary consideration when seeking an explanation of your
"hypothesis ... only of my own experience with this light source ..."
(I don't mean to sound superior in any way; that is how all of us deal
with perceptions, seeking an explanation in that which we understand
best.)
 
As mentioned in the last Clarification, YOU have the option of
rejecting the Answer and receiving a refund of the price.  Perhaps it
should also be mentioned that only Researchers, whose names appear in
blue, can answer questions.  Commenters' names are black, and they can
only post comments and never receive payment for their postings.

If the comment by Cplusplusgenius has suggested a different way to
express your question, it might be an idea to post a new one.

All of us here want to see questions answered to the questioners' satisifaction.
Regards, Myoarin
Subject: Re: Electroluminescent and the effect on the human eye
From: hedgie-ga on 06 Feb 2006 23:38 PST
 
Hi myoarin-ga
               as allways, I appreciate your thoughtful and helpful comments. 
In this case I beg to differ from your view that I got distracted
 from "the main question topic".

 Question  is not about the neurology or psychology of vision.
 Question is about EL materials:

do "electroluminescent lighting materials have a
distinct measureable effect on the human eye?"
...
Light Rays, you will find that this experiment will not " refract like  ..
 "other light sources, therefore, the reason I asked the
question".

Asker has a hypothesis that EL light is somewhat different. That it
behaves differently even before it reaches the eye. We know (or
science knows :-) that
there are indeed differences in the light sources, which we cannot see. 
EL sources have different spectra, (whether modified by added
phosphors or not) which can be measured by instruments, but not seen,
except as filtered by the eyes.

For this reason I have described in detail the three steps trough
which EL materials may interact with human mind, (by emmiting a
photon, which will be absorbed in a retina) hoping that we can focus
the issue on something which can be answered. There is lot of
literature on all three steps and aspects of vision. Quite a bit of
real science can apply . For example some LEDs emit coherent light;
that is not used in ELs but LEDs by definition are electroluminescent
http://www.answers.com/electroluminescent&r=67
My conlusion is that asker is not interested in a dialog, which would clarify
the issues . For this reason I asked editors to remove my answer.
 Even now, when the mistake of too hasty rating was corrected, I do
not consider the question well posted. I suggested and am suggesting
now that asker expires the question (on this we agree) and posts a
different question or questions. The point is academic, since question
will probably remain unanswered anyway.
Not that another researcher could not pick it up, but because most researchers
expect better cooperation from askers.

Cheers

Hedgie
Subject: Re: Electroluminescent and the effect on the human eye
From: myoarin-ga on 07 Feb 2006 04:44 PST
 
Hi Hedgie,
Just to let you know that I "read" you and agree entirely.  I tried to
express that the form of the question distracted from what seems to be
the direction a satisfactory answer would have to take, which was a
fault of the way the question was worded.  You certainly answered the
question as it stands.  I hope the rating doesn't still get recorded;
your answer was worth a much better one.
Since the price will be refunded, I hope that Lightme-ga will stay
friends with G-A.  Hate to see a disgruntled first-timer.

Cheers, Myoarin
Subject: Re: Electroluminescent and the effect on the human eye
From: lightme-ga on 07 Feb 2006 19:40 PST
 
hedgie-ga,  myoarin-ga

Thank you for your comments.
As you can realize for yourself, there has not been very much research
into EL and the effect on the light produced and if this has any
positive or negative effects on he human eye.

Elecrolumiescent produces light from frequency. It is cold light
meaning there is no or very minimal power consumption as compared to
any other light source.

The question I ask is valid, however any one attempting to answer must
be ready to dig deep. The posted reward for the answer is only the
begining as I really do hope to find a research individual that I feel
has the ability to perform complex research. I know there is no easy
answers here, however there could be a huge reward for the right
answers.

Thank you for your efforts and comments, however, you are not the chosen ones.
Subject: Re: Electroluminescent and the effect on the human eye
From: iang-ga on 08 Feb 2006 02:20 PST
 
lightme-ga

It would help researchers if you were to say why you believe there's
an effect to be investigated - what anecdotal or experimental evidence
is there to suggest that light from an electroluminescent source is
more "attractive" than any other light?

>Elecrolumiescent produces light from frequency. It is cold light
meaning there is no or very minimal power consumption as compared to
any other light source.

I don't understand the first sentence, and the second one is simply
wrong - bioluminescence and triboluminescence for example. 
Bioluminescence might be an interesting area to look into though as
it's common for insects and fish to use it to attract pray and / or a
mate.  There's been some research into the effects of things like
wavelength and rise rate, though it's my understanding that these
differentiate one species from another rather than having some
inherently attractive quality.

Ian G.

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