Date: Wed, 19 Jul 2000 09:55:55 -0400

Author: Dick Heckathorn

Subject: RE: light sensor

Post:


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Greetings,

I have not been following the light sensor emails.=20

IBM developed the PSL (Personal Science Laboratory). It's operating unit =
is connected to a computer. In the main set of hardware is a light =
sensor. Data it plotted in real time on the computer screen. As to what =
it will and will not read, I am not sure. I do have manuals.=20

Unfortunately, I do not now have the time to read them. But if I can =
find them, I will bring them to Guelf.

Dick
Helping teachers who teach, motivating students who learn.
"Science is nothing more than learning how to communicate with nature in =
such a manner that it will talk back."
=09
Dick Heckathorn 14665 Pawnee Trail Middleburg Hts, OH 44130-6635 =
440-826-0834
Physics Teacher Cuyahoga Valley Christian Academy 4687 Wyoga Lake =
Road Cuyahoga Falls, OH 44224 330-929-0575 VM 120


-----Original Message-----
From: Machele Bailey [SMTP:baileym@wfu.edu]
Sent: Tuesday, July 18, 2000 1:37 PM
To: tap-l@listproc.appstate.edu
Subject: Re: light sensor

I'll keep this in mind...so far, everything is still in the planning
stages...haven't even gotten approval yet, so I was just gathering info! =
Thanks
bunches!

Chele

Jerry DiMarco wrote:

> Chele,
>
> Are you interested in a commercial unit such as a color meter from
> X-Rite (www.xrite.com)? I realize their stuff may bust your budget, =
but
> maybe a look at their site (or the links to other sites) may give you =
some
> ideas...
>
> =
Jerry
>
> At 09:28 AM 7/18/00 -0400, you wrote:
> >Budget: Cheap, of course
> >Accuracy: about 1-2% if its affordable
> >Mostly it needs to be able to handle the weather outside unless we =
decide to
> >build a light box. We will be testing a certain kind of rope and how =
light
> >affects it and trying to find out what region of the spectrum affects =
it the
> >most (we suspect UV). I'm beginning to lean towards the light box =
idea since
> >we're not worried so much about weather effects...
> >
> >Chele
> >
> >Brian Holton wrote:
> >
> >> Budget? Accuracy? There's some simple light intensity circuits =
using
> >> op-amps and simple photodiodes that are okay, but if you want =
0.00001%
> >> results, well.... I know the photodiodes are good in IR and =
visible, have
> >> to check the UV. What range do you need? Night? more details =
would help
> >> me be able to tell you if such circuits would be useful to you or =
not.
> >>
> >> Brian Holton
> >>
> >> Machele Bailey wrote:
> >>
> >> > I may have a need for a light intensity sensor in the near =
future. I
> >> > want it to be durable (as in outside 24/7) and if it could split =
IR, UV
> >> > and visible, that'd be great. and, oh yeah, a computer interface =
might
> >> > be nice too. Any ideas?
> >> >
> >> > Chele
> >> >
> >> > --
> >> > Machele Bailey-----Lab Manager-----Wake Forest University
> >> >
> >> > -----"Nothing shocks me. I'm a scientist." - Indiana Jones-----
> >
> >--
> >Machele Bailey-----Lab Manager-----Wake Forest University
> >
> >-----"Nothing shocks me. I'm a scientist." - Indiana Jones-----
> >
> >

--
Machele Bailey-----Lab Manager-----Wake Forest University

-----"Nothing shocks me. I'm a scientist." - Indiana Jones-----


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