Date: Thu, 5 Aug 2010 15:04:53 -

Author: --- "Perry Godwin"

Subject: Re: stopping cellphone usage in classrooms

Post:


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George,

=


What are the specifications for the copper screening you used? And what si=
ze is your Faraday cage? We are interested in building one as a demonstrat=
ion unit to show that cell phones don't work inside a Faraday cage.

=


Perry Godwin

Head Physics Technician

Lansing Community College

Email: godwip@lcc.edu

Office: 517-483-9653

Cell: 517-927-2155

Pager: 517-232-0278

=


From: tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On Beh=
alf Of George Collison
Sent: Friday, July 30, 2010 3:56 PM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] stopping cellphone usage in classrooms

=


I use a "cell phone jail" - a Faraday cage hung from a corner of the ceilin=
g (made out of copper screening with bars painted on it). By school rules =
I can take away and retain for release to a vice principal any cell phone. =
I invite students to call the number: nothing happens. The phones get re=
turned in 1-2 days after "administrative reviews". It gets the message acr=
oss.

=


george

=


On Fri, Jul 30, 2010 at 2:40 PM, Jerry DiMarco wrote:

Maybe a cellphone transmission detector with an audio or visual alarm w=
ould be a safer alternative. Compatibility with wireless infrastructure wo=
uld have to be worked out though...

=
Jerry


At 7/29/2010 09:48 PM, you wrote:

Two years ago I bought one and was occassionally using it in class, as were=
a few other teachers. We have a rule in the school.. no cell phone use or=
it gets taken away. Another science teacher had an experience where a stu=
dent wanted to know why his cell phone was not working in the classroom, so=
the teacher took that student's cell phone away.. he must have been using =
it...

I found that the batteries ran down extremely quickly. They make a bigger,=
more expensive, plug in model.

But more importantly, in our high school the science teachers share laptop =
carts with a wireless router that you hook up in your room. I supspect, ba=
sed on some feedback from neighboring teachers, that when I used the cell =
phone jammer it also interferred with the wireless routers, in the next roo=
m where I could not see the problem I was causing. I never took the time t=
o fully check this out.

I was concerned about legality. I found some articles suggesting that this =
could be illegal use of the airwaves. In any case, I stopped using it so I=
stopped my investigations on the legality.

Daniel Kaplan
Physics Teacher
Matawan Regional High School, Aberdeen, NJ



----------
From: tap-l-owner@lists.ncsu.edu on behalf of Brian Holton
Sent: Thu 7/29/2010 7:39 PM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] Want a large convex mirror for my classroom

Hey Dan,

http://www.dealextreme.com/=
details.dx/sku.4355

that might solve your cell phone problem using another method ;-)

like Chele said though, here's a nice link for mirrors to suit your securit=
y purpose: http://stampsstorefixtures.net/in=
dex.php?main_page=3Dindex&cPath=3D19&gclid=3DCJafxMLzkaMCFRY75Qod7GSkpQ

Brian Holton

----- Original Message -----
From: Daniel Kaplan
To: tap-l@lists.ncsu.edu
Sent: Thursday, July 29, 2010 12:53 PM
Subject: [tap-l] Want a large convex mirror for my classroom

I am interested in obtaining a large convex mirror for my classroom. I pla=
n on mounting it in the back of the class all year (partially to discourage=
cell phone usage under the desks) and then using it for demos when we get =
to geometric optics. I would appreciate any suggestions on how I could go =
about purchasing this inexpensively. Thanks.

Daniel Kaplan
Physics Teacher
Matawan Regional High School, Aberdeen, NJ






<><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

Jerry DiMarco
Manager of Lecture Demonstrations and Instructional Labs
Montana State Univ., Physics Dept. =
=

Bozeman, MT

Our Motto: "Find your inner demo." =


=



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George,



What are the specifications for the copper screening you
used? And what size is your Faraday cage? We are interested in
building one as a demonstration unit to show that cell phones donít w=
ork
inside a Faraday cage.



Perry Godwin

Head Physics Technician

Lansing Community College

Email: godwip@lcc.edu

Office: 517-483-9653

Cell: 517-927-2155

Pager: 517-232-0278





From:
tap-l-owner@lists.ncsu.edu [mailto:tap-l-owner@lists.ncsu.edu] On Behalf=
Of George
Collison
Sent: Friday, July 30, 2010 3:56 PM
To: tap-l@lists.ncsu.edu
Subject: Re: [tap-l] stopping cellphone usage in classrooms





I use a "cell phone jail" - a Faraday cage h=
ung
from a corner of the ceiling (made out of copper screening with bars painte=
d on
it). By school rules I can take away and retain for release to a vice=

principal any cell phone. I invite students to call the number:
nothing happens. The phones get returned in 1-2 days after
"administrative reviews". It gets the message across.<=
/o:p>









george







On Fri, Jul 30, 2010 at 2:40 PM, Jerry DiMarco >
wrote:

Maybe a cellphone transmission detector =
with
an audio or visual alarm would be a safer alternative. Compatibility =
with
wireless infrastructure would have to be worked out though...

=
;
=
;
=
;
=
;
Jerry


At 7/29/2010 09:48 PM, you wrote:

Two years ago I bought one and was occassionally using=
it in
class, as were a few other teachers. We have a rule in the school.. n=
o
cell phone use or it gets taken away. Another science teacher had an
experience where a student wanted to know why his cell phone was not workin=
g in
the classroom, so the teacher took that student's cell phone away.. he must=

have been using it...

I found that the batteries ran down extremely quickly. They make a
bigger, more expensive, plug in model.

But more importantly, in our high school the science teachers share laptop
carts with a wireless router that you hook up in your room. I supspec=
t,
based on some feedback from neighboring teachers, that when I used th=
e
cell phone jammer it also interferred with the wireless routers, in the nex=
t
room where I could not see the problem I was causing. I never took th=
e
time to fully check this out.

I was concerned about legality. I found some articles suggesting that this
could be illegal use of the airwaves. In any case, I stopped using it=
so
I stopped my investigations on the legality.

Daniel Kaplan
Physics Teacher
Matawan Regional High School, Aberdeen, NJ



----------
From: tap-l=
-owner@lists.ncsu.edu
on behalf of Brian Holton
Sent: Thu 7/29/2010 7:39 PM
To: tap-l@lists.n=
csu.edu
Subject: Re: [tap-l] Want a large convex mirror for my classroom

Hey Dan,

h=
ttp://www.dealextreme.com/details.dx/sku.4355

that might solve your cell phone problem using another method ;-)

like Chele said though, here's a nice link for mirrors to suit your securit=
y
purpose: x&cPath=3D19&gclid=3DCJafxMLzkaMCFRY75Qod7GSkpQ>http://stampsstorefixtures.net/index.php?main_page=3Dinde=
x&cPath=3D19&gclid=3DCJafxMLzkaMCFRY75Qod7GSkpQ

Brian Holton

----- Original Message =
-----
From: Daniel
Kaplan
To: p-l@lists.ncsu.edu>tap-l@lists.ncsu.edu=

Sent: Thursday, July 29, 2010 12:53 PM
Subject: [tap-l] Want a large convex mirror for my classroom

I am interested in obtaining a large convex mirror for my classroom. =
I
plan on mounting it in the back of the class all year (partially to discour=
age
cell phone usage under the desks) and then using it for demos when we get t=
o
geometric optics. I would appreciate any suggestions on how I could g=
o
about purchasing this inexpensively. Thanks.

Daniel Kaplan
Physics Teacher
Matawan Regional High School, Aberdeen, NJ






<><><><><><><><><><=
;><><><><><><><><><&g=
t;<><><><><><><><><>&=
lt;>

Jerry DiMarco
Manager of Lecture Demonstrations and Instructional Labs
Montana State Univ., Physics Dept. =

=
;

Bozeman, MT

Our Motto: "Find your inner demo."















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