Re: [Phys-l] flashlight : no battery, no bulb

["Dan L. MacIsaac" <danmacisaac@mac.com>]

Also those cheap batteries stop holding a charge pretty quickly.  You  
can buy a supercap flashlight charged by the magnet in wire coil that  
John describes, but they're rarer than might be hoped for and the  
cheaper look a likes  are common.

Dan MacIsaac, Associate Professor of Physics, SUNY-Buffalo State College
222SciBldg BSC, 1300 Elmwood Ave, Buffalo NY 14222 USA 716-878-3802
<macisadl@buffalostate.edu>  <http://PhysicsEd.BuffaloState.edu>
Physics Graduate Coordinator & Dept Chair Pro Tem (acting Jan-Aug 2008)




On Jun 2, 2008, at 7:46 PM, John Denker wrote:

> On 06/01/2008 09:44 PM, Marc "Zeke" Kossover wrote:
> > And on the one I bought from them, the so-called capacitors
> > were in fact batteries. The magnet was vaguely magnetic,
> > but the wiring was completely a joke. It didn't really
> > connect to anything.
>
> Thanks for the heads-up ... I wouldn't have discovered the
> problem on my own until much, much later.
>
> This is about as embarrassing as possibly could be.  I gave
> one as a gift to a little kid, then read Marc's note and
> realized I'd been swindled.
>
> Ever try to un-give a present?  Not a good situation.
>
> There *are* products in this category that actually work;
> this just isn't one of them.
>
> Sorry for any confusion I caused.
>
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