delorie.com/archives/browse.cgi   search  
Mail Archives: geda-user/2012/03/16/13:58:56

X-Authentication-Warning: delorie.com: mail set sender to geda-user-bounces using -f
X-Recipient: geda-user AT delorie DOT com
Date: Fri, 16 Mar 2012 13:58:36 -0400 (EDT)
From: GENE GLICK <geneglick AT optonline DOT net>
Subject: Re: [geda-user] Daughter's Science Fair
X-Originating-IP: [12.139.224.82]
To: geda-user AT delorie DOT com
Cc: geda-user AT delorie DOT com
Message-id: <81086e.ffa0.1361ca943e5.Webtop.22@optonline.net>
MIME-version: 1.0
X-SID: 22
X-Authuserid: geneglick AT optonline DOT net
User-Agent: Laszlo Mail 3
Reply-To: geda-user AT delorie DOT com

--Boundary_(ID_gGlvFuE83qFPa+mnDnATiw)
Content-type: text/plain; charset=UTF-8; format=flowed
Content-transfer-encoding: 7BIT
Content-disposition: inline




On Fri, Mar 16, 2012 at 11:33 AM, Rob Butts wrote:

  So if I use a 1 watt 15k ohm resistor in series with the nail and an 
ac outlet that will give me 8ma alternating current and that should 
light the bulb?

I don't think UL would approve :) Also, you don't want to endanger the 
kids.  But - if you energize one coil with a DC source, then *move* the 
other coil around, you should get something to happen.  Maybe a light 
bulb, or maybe a current meter would show the affect.  In fact, if you 
have time to build a little turntable, somehow allowing the kids to spin 
the second coil - that should also work.  Faster spins = brighter 
lights, or higher current readings - make a game out of it :)

gene

--Boundary_(ID_gGlvFuE83qFPa+mnDnATiw)
Content-type: text/html; charset=UTF-8
Content-transfer-encoding: quoted-printable
Content-disposition: inline

<DIV ALIGN=3D"LEFT"><FONT FACE=3D"Verdana" SIZE=3D"2" COLOR=3D"#000000" LET=
TERSPACING=3D"0" KERNING=3D"0">&nbsp;</FONT></DIV><FONT FACE=3D"Verdana" SI=
ZE=3D"2" COLOR=3D"#000000" LETTERSPACING=3D"0" KERNING=3D"0"><br></FONT><FO=
NT FACE=3D"Verdana" SIZE=3D"2" COLOR=3D"#000000" LETTERSPACING=3D"0" KERNIN=
G=3D"0"><br></FONT><DIV ALIGN=3D"LEFT"><FONT FACE=3D"Verdana" SIZE=3D"2" CO=
LOR=3D"#000000" LETTERSPACING=3D"0" KERNING=3D"0">On Fri, Mar 16, 2012 at 1=
1:33 AM, Rob Butts wrote:</FONT></DIV><FONT FACE=3D"Verdana" SIZE=3D"2" COL=
OR=3D"#000000" LETTERSPACING=3D"0" KERNING=3D"0"><br></FONT><DIV ALIGN=3D"L=
EFT"><FONT FACE=3D"Verdana" SIZE=3D"2" COLOR=3D"#000000" LETTERSPACING=3D"0=
" KERNING=3D"0">&nbsp;<FONT SIZE=3D"3">So if I use a 1 watt 15k ohm resisto=
r in series with the nail and an ac outlet that will give me 8ma alternatin=
g current and that should light the bulb? </FONT></FONT></DIV><FONT FACE=3D=
"Verdana" SIZE=3D"3" COLOR=3D"#000000" LETTERSPACING=3D"0" KERNING=3D"0"><b=
r></FONT><DIV ALIGN=3D"LEFT"><FONT FACE=3D"Verdana" SIZE=3D"3" COLOR=3D"#00=
0000" LETTERSPACING=3D"0" KERNING=3D"0">I don't think UL would approve :) A=
lso, you don't want to endanger the kids.&nbsp; But - if you energize one c=
oil with a DC source, then *move* the other coil around, you should get som=
ething to happen.&nbsp; Maybe a light bulb, or maybe a current meter would =
show the affect.&nbsp; In fact, if you have time to build a little turntabl=
e, somehow allowing the kids to spin the second coil - that should also wor=
k.&nbsp; Faster spins =3D brighter lights, or higher current readings - mak=
e a game out of it :)</FONT></DIV><FONT FACE=3D"Verdana" SIZE=3D"3" COLOR=
=3D"#000000" LETTERSPACING=3D"0" KERNING=3D"0"><br></FONT><DIV ALIGN=3D"LEF=
T"><FONT FACE=3D"Verdana" SIZE=3D"3" COLOR=3D"#000000" LETTERSPACING=3D"0" =
KERNING=3D"0">gene</FONT></DIV>=

--Boundary_(ID_gGlvFuE83qFPa+mnDnATiw)--

- Raw text -


  webmaster     delorie software   privacy  
  Copyright 2019   by DJ Delorie     Updated Jul 2019