** Thanks for the input, Dave, however, Eric's stonewalling my questions
about possibly knowing the other person who uses the term "voodoo
parasitics" suggests that he here on a mission. [note -- the 'other
person' is the one who, as I recall, threatened you at the Dayton flea
market.
have phun
>In a message dated 2/7/03 7:19:57 PM Eastern Standard Time,
>MorgusMagnificen@aol.com writes:
>
>> Let's calculate (not speculate) on the (Lorenz)force acting on a welding
>> cable laying at ground 0, and one-meter long, carrying a current of
>> 1000A.,
>> due to its interaction with the geomagnetic field, which we will assume to
>> be
>> vertical and of magnitude B=1Gauss (good estimates - just ask your friendly
>>
>> geophysicist). Of course, we all recall that the formula for the force on a
>>
>> straight conductor in a B-field is:
>>
>> F=BxLxI (MKS units)
>>
>> Using MKS units: F=.00001 x 1 x 1000=.01N.=.0022Lbs=.032Oz.
>> Should really shake up that 4/0! Remember - this is the total force on
>> 1METER of cable, with 1000AMPS flowing.
>>
>> Eric von Valtier K8LV
>>
>
>Eric,
> You can speculate all you want and by plugging numbers into formula,
>get almost any number you want by making assumptions. Lets look at the real
>world of results.
>
> I worked in a basic research labortory where we used a pulsed
>solenoidal DC magnet which generated such a strong field that it had to be
>cooled by liquid nitrogen before it was activated so that it would not
>destroy itself. The conductors carrying current to the magnet had to be
>restrained by heavy wooden boards to prevent them from moving. The field
>outside the magnet was so strong that it picked up a pair of scissors which
>were inadvertantly left laying on a work bench 10 feet away and buried them
>in the wooden shroud surrounding the magnet. The scissors ended up on a
>radius of the axis of the magnet.
> No small force here.
>
>73 de
>
>Dave, WT8R
>
>
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>
- R. L. Measures, a.k.a. Rich..., 805.386.3734, AG6K,
www.vcnet.com/measures.
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