May the flux be with you. Traditional Cache
leighpilot: This site won't work so I'm archiving this one
May the flux be with you.
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Difficulty:
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Terrain:
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Size: 
(micro)
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A micro with parking close by. Get some groceries while you are at it.
Please replace EXACTLY where you found it. If you do find it!
The magnetic flux through a given surface is proportional to the number of magnetic field lines that pass through the surface. This is the net number, i.e. the number passing through in one direction, minus the number passing through in the other direction. (See below for how the positive sign is chosen.) For a uniform magnetic field B passing through a perpendicular area the magnetic flux is given by the product of the magnetic field and the area element. The magnetic flux for a uniform B at any angle to a surface is defined by a dot product of the magnetic field and the area element vector a.
(uniform B with flat area only)
where ? is the angle between B and a vector a that is perpendicular (normal) to the surface.
In the general case, the magnetic flux through a surface S is defined as the integral of the magnetic field over the area of the surface (See Figures 1 and 2):
where is the magnetic flux, B is the magnetic field,
S is the surface (area), denotes dot product, and dS is an infinitesimal vector, whose magnitude is the area of a differential element of S, and whose direction is the surface normal. (See surface integral for more details.)
From the definition of the magnetic vector potential A and the fundamental theorem of the curl the magnetic flux may also be defined as:
where the closed line integral is over the boundary of the surface and dl is an infinitesimal vector element of that contour S.
The magnetic flux is usually measured with a fluxmeter. The fluxmeter contains measuring coils and electronics that evaluates the change of voltage in the measuring coils to calculate the magnetic flux
Additional Hints
(Decrypt)
N zntargvp zvpeb ng urnq urvtug. Jryy vs lbh ner zl urvtug vg vf naq V nz fvk sg.