Minimum magnetic field detected and measured

mather
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hello!

what is the minimum magnetic field that can be detected and measured?

which organ does it?

thanks!
 
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mather said:
hello!

what is the minimum magnetic field that can be detected and measured?

which organ does it?

thanks!

Sorry, organ?

Zz.
 
ZapperZ said:
Sorry, organ?

Zz.

instrument? device?
 
A SQUID can detect down to the quantized magnetic flux.

http://www.physics.wisc.edu/undergrads/courses/407/experiments/squid/rfSQUID.pdf

Zz.
 
Last edited by a moderator:
thanks!
 
Thread 'Colors in a plasma globe'

Thread 'Colors in a plasma globe'

I have a common plasma globe with blue streamers and orange pads at both ends. The orange light is emitted by neon and the blue light is presumably emitted by argon and xenon. Why are the streamers blue while the pads at both ends are orange? A plasma globe's electric field is strong near the central electrode, decreasing with distance, so I would not expect the orange color at both ends.
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