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Mail Archives: geda-user/2012/03/16/12:42:40

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Date: Fri, 16 Mar 2012 12:42:25 -0400
Message-ID: <CALSZ9gp=9LcNNgbguhg9ME+cT3+Yt1Kq+TKdUJHzJUP-v7jduQ@mail.gmail.com>
Subject: Re: [geda-user] Daughter's Science Fair
From: Rob Butts <r DOT butts2 AT gmail DOT com>
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Yeah, I think I'll just keep it to the electromagnetic nails.  I don't feel
comfortable playing with ac outlet power for this!

Thanks!

On Fri, Mar 16, 2012 at 10:37 AM, Atommann <atommann AT gmail DOT com> wrote:

> 2012/3/16 Rob Butts <r DOT butts2 AT gmail DOT com>:
> > My nine-year-old daughter has a science fair tomorrow.  We are doing
> simple
> > electromagnets out of nails.  We are just using one C battery with
> > approximately a 30-penny nail and 26 guage wire wrapped around the nail
> for
> > two layers.  When the battery is connected the nail has a good magnetic
> > strength in that it will pick up another nail not just paper clips.
> >
> > I was thinking about showing how a current in one coil will induce a
> current
> > in another (how an electric toothbrush charges).  We rigged up another
> nail
> > the same way but with a little bulb attached.  Check my theory, shouldn't
> > the electromagnetic field produced by the coil and nail with the battery
> > induce a current in the other coil when placing the nails adjacent
> > and parallel?
>
> I have an ideas:
> Use a longer nail and wrap two coils on the same nail, one coil will
> be connected to the battery with a switch while the other one will be
> connected to a small bulb. When you turn on/off the switch see what
> happens.
>
> --
> Best regards,
> Atommann
>
>

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<div>Yeah, I think I&#39;ll just keep it to the electromagnetic nails.=A0 I=
 don&#39;t feel comfortable playing with ac outlet power for this!</div><di=
v>=A0</div><div>Thanks!<br><br></div><div class=3D"gmail_quote">On Fri, Mar=
 16, 2012 at 10:37 AM, Atommann <span dir=3D"ltr">&lt;<a href=3D"mailto:ato=
mmann AT gmail DOT com">atommann AT gmail DOT com</a>&gt;</span> wrote:<br>
<blockquote style=3D"margin:0px 0px 0px 0.8ex;padding-left:1ex;border-left-=
color:rgb(204,204,204);border-left-width:1px;border-left-style:solid" class=
=3D"gmail_quote">2012/3/16 Rob Butts &lt;<a href=3D"mailto:r DOT butts2 AT gmail DOT c=
om">r DOT butts2 AT gmail DOT com</a>&gt;:<br>

<div><div class=3D"h5">&gt; My nine-year-old daughter has a science fair to=
morrow.=A0 We are doing simple<br>
&gt; electromagnets out of nails.=A0 We are just using one C battery with<b=
r>
&gt; approximately a=A030-penny nail and 26 guage wire wrapped around the n=
ail for<br>
&gt; two layers.=A0 When the battery is connected the nail has a good magne=
tic<br>
&gt; strength in that it will pick up another nail not just paper clips.<br=
>
&gt;<br>
&gt; I was thinking about showing how a current in one coil will induce a c=
urrent<br>
&gt; in another (how an electric toothbrush charges).=A0 We rigged up anoth=
er nail<br>
&gt; the same way but with a little bulb attached.=A0 Check my theory, shou=
ldn&#39;t<br>
&gt; the electromagnetic field produced by the coil and nail with the batte=
ry<br>
&gt; induce a current in the other coil when placing the nails adjacent<br>
&gt; and=A0parallel?<br>
<br>
</div></div>I have an ideas:<br>
Use a longer nail and wrap two coils on the same nail, one coil will<br>
be connected to the battery with a switch while the other one will be<br>
connected to a small bulb. When you turn on/off the switch see what<br>
happens.<br>
<span class=3D"HOEnZb"><font color=3D"#888888"><br>
--<br>
Best regards,<br>
Atommann<br>
<br>
</font></span></blockquote></div><br>

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