Hi everyone,

 

Here's a question I've always wanted to ask:  Why (if the number of magnetic
lines of force cut per unit time produces a current flow) is it not possible
to force two identical magnets together so that they're oriented (for
example) N pole to N pole.  It seems to me that the lines of force would
crowd together so that the least movement of them would produce quite a
strong response in a coil. 

 

I built a simple vertical seismometer with a 5 pound plumber's lead as the
weight, a spring and two cow magnets forced together in a 4 inch PVC tube so
that the resting position in the coil was the point at which the maximum
lines of force resided.  It made a lot of sense when I designed it but I
didn't have a good environment in which to test it; e.g. A 500 foot TV
station antenna within 50 feet; an expressway two blocks away and a location
inside a TV studio.  To be sure, it was a short period sensor and it
indicated a lot of local noise.  

 

I'm not a seismologist (that should be quite evident) . I'm a retired
electrical engineer who specialized in grounding and lightning & transient
damage risk mitigation.   I was just  curious and thought I'd ask.

 

Miguel Lozano

Lockhart, TX

 

 














Hi =
everyone,

 

Here’s a
question I’ve always wanted to ask:  Why (if the number of =
magnetic
lines of force cut per unit time produces a current flow) is it not =
possible to
force two identical magnets together so that they’re oriented (for
example) N pole to N pole.  It seems to me that the lines of force =
would
crowd together so that the least movement of them would produce quite a =
strong
response in a coil. 

 

I =
built a simple
vertical seismometer with a 5 pound plumber’s lead as the weight, =
a
spring and two cow magnets forced together in a 4 inch PVC tube so that =
the
resting position in the coil was the point at which the maximum lines of =
force
resided.  It made a lot of sense when I designed it but I =
didn’t
have a good environment in which to test it; e.g. A 500 foot TV station =
antenna
within 50 feet; an expressway two blocks away and a location inside a TV
studio.  To be sure, it was a short period sensor and it indicated =
a lot
of local noise.  

 

I’m not a
seismologist (that should be quite evident) … I’m a retired
electrical engineer who specialized in grounding and lightning & =
transient
damage risk mitigation.   I was just  curious and thought
I’d ask.

 

Miguel =
Lozano

Lockhart, =
TX

 

 <=
/o:p>