A Treatise On Electricity And Magnetism
A Treatise On Electricity And Magnetism
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In our eReader you can find the full English version of the book. Read A Treatise On Electricity And Magnetism Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Treatise On Electricity And Magnetism
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If, on the other hand, this quantity is negative, the force will tend to increase r, and the equilibrium will be unstable.
Now consider a sphere whose centre is the origin and whose radius is r, and so small that when the point fixed in the body lies within this sphere no part of the moveable body A can coincide with any part of the external system B, Then, since within the sphere V^M = 0, the surface-integral taken over the surface of the sphere, is zero.
Hence, if at any part of the surface o...f the sphere dM/dr is positive, there must be some other part of the surface where it is negative, and if the body A be displaced in a direction in which dM/dr is negative, it will tend to move from its original position, and its equilibrium is therefore necessarily unstable.
The body therefore is unstable even when constrained to move ir-.
Digitized by Google 1 1 6.] EQUILIBBIUM ALWAYS UNSTABLE. 163 parallel to itself, and ^ fortiori it is unstable when altogether free.
Now let us suppose that the body A is a conductor.
What to read after A Treatise On Electricity And Magnetism?
You can find similar books in the "Read Also" column, or choose other free books by Maxwell James Clerk to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
If, on the other hand, this quantity is negative, the force will tend to increase r, and the equilibrium will be unstable.
Now consider a sphere whose centre is the origin and whose radius is r, and so small that when the point fixed in the body lies within this sphere no part of the moveable body A can coincide with any part of the external system B, Then, since within the sphere V^M = 0, the surface-integral taken over the surface of the sphere, is zero.
Hence, if at any part of the surface o...f the sphere dM/dr is positive, there must be some other part of the surface where it is negative, and if the body A be displaced in a direction in which dM/dr is negative, it will tend to move from its original position, and its equilibrium is therefore necessarily unstable.
The body therefore is unstable even when constrained to move ir-.
Digitized by Google 1 1 6.] EQUILIBBIUM ALWAYS UNSTABLE. 163 parallel to itself, and ^ fortiori it is unstable when altogether free.
Now let us suppose that the body A is a conductor.
What to read after A Treatise On Electricity And Magnetism?
You can find similar books in the "Read Also" column, or choose other free books by Maxwell James Clerk to read onlineMoreLess
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