Date: Fri, 7 May 1999 16:46:31 -0700 (PDT)
From: Al Rahbar <drrahbar@yahoo.com>
Subject: Re: Car generator
To: Pinhole Listserv <pinhole@exploratorium.edu>
Hi Yibi Smith,
A generator has certain capacity(based on its power rating) to generate
electricity. Then, the output power varied, depending on its load
[from zero(no load) to its max( maximum load)]. This is simply
controlled by a voltage regulator. Ali Rahbar
--- Pinhole Listserv <pinhole@exploratorium.edu> wrote:
> Pinhole Digest #180 - Friday, May 7, 1999
>
> filling a bucket
> by "Laura Quilter"
> <lquilter@isaac.exploratorium.edu>
> Re: pinhole filling a bucket
> by <pauld@exploratorium.edu>
> generators
> by "Yibi Smith" <yibsmith@jps.net>
> Re: pinhole filling a bucket
> by <NFetter@aol.com>
> Re: pinhole filling a bucket
> by <CGDonahoe3@aol.com>
> Re: pinhole generators
> by <pauld@exploratorium.edu>
> Re: pinhole generators
> by "Gary Alexander Horne"
> <gary.horne@excite.com>
> Re: pinhole filling a bucket
> by "Marc Afifi" <mafifi@redshift.com>
>
>
>
----------------------------------------------------------------------
>
> Subject: filling a bucket
> From: Laura Quilter
> <lquilter@isaac.exploratorium.edu>
> Date: Thu, 06 May 1999 14:12:41 -0700
>
> I work at the Exploratorium, and got an interesting
> question from a member
> recently. He said that his son had posed him the
> question: what can you
> put in a bucket to make it lighter? (besides a
> hole) - we've already
> gotten the suggestions: hydrogen, helium, methane -
> any other thoughts?
>
> Laura Quilter / lquilter@exploratorium.edu
> Learning Center Facilities Manager
> Exploratorium
>
>
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole filling a bucket
> From: pauld@exploratorium.edu
> Date: Thu, 6 May 99 16:17:13 +0000
>
> Hi Laura
>
> To make the bucket lighter :
> turn on a flashlight and drop it into the bucket.
>
> Paul D
>
>
> --------------------------------------------------
> This message was sent using Exploratorium web mail
> http://www.exploratorium.edu/
>
>
>
>
----------------------------------------------------------------------
>
> Subject: generators
> From: Yibi Smith <yibsmith@jps.net>
> Date: Thu, 06 May 1999 16:16:15 -0700
>
> Dear Pinholers,
> I have a student question that I could not answer to
> my satisfaction. The
> question is: In a car generator the electric
> current is generated until
> the battery is fully charged. In order to do this
> the generator is
> creating more electricity than is needed to run the
> car. Once the battery
> is fully charged, does the generator generate less
> electricity? If not
> where does it go?
> Thanks for any insight you can give me. Yibi Smith,
> Dixon High
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole filling a bucket
> From: NFetter@aol.com
> Date: Thu, 6 May 1999 19:53:04 EDT
>
> Hi,
> Aside from Paul's light hearted solution, you must
> have a sealed bucket if
> yoyuwant to fill it with helium to make it
> "lighter". Also you could grind
> off some of the metal without compromising its
> ability to hold water and that
> would make it lighter. Also take the bucket to the
> Moon, where everything is
> "lighter".
> Neil Fetter
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole filling a bucket
> From: CGDonahoe3@aol.com
> Date: Thu, 6 May 1999 20:47:41 EDT
>
> place magnets on the base of the bucket, assuming it
> is iron/steel
>
> place this bucket over magnets with same polar (n or
> s) and float it!!
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole generators
> From: pauld@exploratorium.edu
> Date: Thu, 6 May 99 18:36:13 +0000
>
> Hello Yibi Smith
>
> The generator (actually alternator but it still
> works
> OK) will generate 12 volts or so. Say that when the
> battery is depleted its voltage is at 10 volts. The
> generator will bring the battery to 12 volts. When
> the battery reaches 12 volts the flow of current
> into
> the battery stops.
>
> Here's a fluid flow analogy.
> You have a pump (the generator) that will only
> pump water to a height of 12 feet, no higher.
> You have a bucket, the bucket is 15 feet high but
> has only 10 feet of water in it. (The pump feeds
> water up a hose inside the bucket.)
> You turn on the pump the water flows into the
> bucket filling it up. But when the water level in
> the
> bucket reaches 12 feet the pump can't pump any
> higher so it stops. So when the water reaches 12
> feet the flow into the bucket stops. This is because
>
> the back pressure from the 12 feet of water stops
> the flow through the pump.
>
> Paul Doherty
>
>
>
> --------------------------------------------------
> This message was sent using Exploratorium web mail
> http://www.exploratorium.edu/
>
>
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole generators
> From: "Gary Alexander Horne" <gary.horne@excite.com>
> Date: Thu, 06 May 1999 20:17:41 PDT
>
> I wonder what that means "creates more
> electricity.." I dont think the
> generator floods the battery with extra electrons.
> Perhaps it just creates
> a voltage differential that charges the battery by
> induction or something
> (its been a while...I teach math...) If that is the
> case, there is no
> "extra electricity" to go anywhere, it just
> maintains that voltage level.
>
> How does that sound, Paul D.?
>
> Gary Horne
>
>
>
>
> If you want to know what God thinks of pieniadze,
> look at the people he
> gives it to.
> -Polish Proverb
>
>
>
>
> _______________________________________________________
> Get your free, private email at
> http://mail.excite.com/
>
>
----------------------------------------------------------------------
>
> Subject: Re: pinhole filling a bucket
> From: Marc Afifi <mafifi@redshift.com>
> Date: Thu, 06 May 1999 20:40:16 +0000
>
> How about a light bulb, candle etc?
>
=== message truncated ===
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