Alt-BEAM Archive
Message #12234
To: beam@sgiblab.sgi.com
From: "Mike Kulesza" mikekulesza@hotmail.com
Date: Tue, 21 Mar 2000 00:44:54 GMT
Subject: [alt-beam] Re: banners@beambotix
You're right on that... But they didn't see that - they're not on the list.
___________________________
Mike Kulesza
www.geocities.com/beambotix
______________________________________________________
12235 Mon, 20 Mar 2000 17:07:47 -0800 Re: all powerful light beam@sgiblab.sgi.com Hyndman [mailto:hyndmanm@cadvision.com]
The best alternative to sunlight for solar cells are halogen lights, they
by far produce the most current . Second is incadesant, they provide mid
range current. Lastly is Fluroesant, which I would say is the worst for
solar cells. They provide near to no current. Halogens are nice for having
really active bots, but in competition they have been known to melt solar
rollers. I have never really measured the temperature of a halogen when
it's heated up, I wouldn't be surprised if it is in excess of 400^o F.
Devin
12236 Mon, 20 Mar 2000 19:07:26 -0500 Re: Funky idea... Sathe Dilip
> Sorry to disappoint you but this won't work (very efficiently) for
> multiple reasons.
>
> I think what you heard about the resistance (if you mean NO resistance)
> is the thermal resistance (high thermal conductivity) & not the friction
> equivalent of resistance (viscosity) or the electrical resistance. When
> you fill a motor with oil, the rotor will have increased friction with
> the medium (as compared to its rotating in air).
>
> Compared to air filled motor (whatever free space it has), an oil filled
> motor will be heavier & less buoyant.
>
> If you do not have effective seals for the oil, water will still get in
> (& oil out) due to the pressure seen by the oil (difference in density).
>
> All in all, having a air filled motor with good seals around the shaft
> will be more efficient than what you are proposing.
>
> Lastly, the oil has to have near infinite electrical resistance.
> Otherwise you will short circuit the computer.
>
> Dilip
> -----------------------------------
>
> William Cox wrote:
> >
> > Sorry, I mean NO resistance.......
> >
> > > >cooled mineral oil, because it has infinite resistance.
>
> --
> ----------------------------------------------------------------------
> The early bird may get the worm, but the second mouse gets the cheese.
> ----------------------------------------------------------------------
>
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