I just found this information on the Internet:
    "Cooling a magnet improves the overall ordering (of domains) and makes 
it magnetization stronger."

If a magnet's strength increases, even minutely, it would affect the induced 
current in the coil proportionally. This could cause the slight increase in 
trace's signal strength.

My magnet is laying on the concrete floor absorbing any temperature changes. 
I am going to try to laying my magnets on a piece of thin Styrofoam, 
insulating it from the floor, and see how it responds tonight.

Jerry 







I just found this information on the Internet:
    "Cooling a magnet improves the overall ordering =
(of=20
domains) and makes it magnetization stronger."
 
If a magnet's strength increases, even minutely, it would affect =
the=20
induced current in the coil proportionally. This could cause the slight =
increase=20
in trace's signal strength.
 
My magnet is laying on the concrete floor absorbing any temperature =

changes.  I am going to try to laying my magnets on a piece of thin =

Styrofoam, insulating it from the floor, and see how it responds =
tonight.
 
Jerry