Magnetic fields are Awesome!! If anyone were to ask what I thought were the coolest things ever, magnetic fields would be up there on my list! Just take a moment and look at these photos....
Of course these are artistic impressions of what magnetic fields look like considering they are not visible to the naked eye.
Since I don't have much time, afterall, I do have an astrophysics final exam to study for, I will briefly outline some facts about magnetic fields in lieu of creating a Mathematica simulation. Terribly sad dear readers, don't fret, if you'd like, I can give you a tour of my lab and show off all the magnets I have made by hand!!! :) Of course, if you are not reading my blog, you'll never know of my private tour and just leave me more time to play with coils all by myself! :)
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1 tesla is equivalent to:
10,000 (or 104) G (gauss), used in the CGS system. Thus, 10 G = 1 mT (millitesla), and 1 G = 10−4 T.
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Magnetic fields:
Earth's magnetic field: Its magnitude at the surface ranges from 25 to 65 µT (0.25 to 0.65 G)
Sun's magnetic field: has a large and complex magnetic field which varies. I couldn't find an average magnitude at its surface.
Neutron star magnetic field: can have like fields approximately 50,000 T (500,000,000 G) That's insane!!!
World record for man made magnetic field: approximately 100 T (1,000,000 G)
Largest Hand made coil made by me: 980 G (which is less than 1 T)
Here are some photos:

Before and after sandblasting the mounts we used to wrap the coils.
The finished product... more than 6 hours later. :P
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Lastly, I'm very interested in magnetic poles reversing. Below, I have included some artistic impressions of the magnetic poles of the earth switching. Also, I wanted to mention, what I just learned today, that the magnetic poles of the sun reverse every 11 years! Very interesting! You can read about it
Here!