John Kepler inferred that the planets move in their orbits under some influence or force exerted by the sun; but the laws of motion were not then sufficiently developed, nor were Kepler's ideas of force sufficiently clear, to admit of a precise statement of the nature of the force.
In the internal field of a long coil of wire carrying an electric current, the lines of force are, except near the ends, parallel to the axis of the coil, and it is chiefly for this reason that the field due to a coil is particularly well adapted for inductively magnetizing iron and steel.
System the unit of force is called the dyne, and the unit of work or energy the erg.
Its open advocacy of force attracts warlike races, and the intensity of its influence is increased by the fusion of secular and religious power, so that the Moslem Church is a Moslem state characterized by slavery, polygamy, and, subject to the autocracy of the ruler, by the theoretical.
Accordingly when he sprinkled iron filings on a card held over a magnet and revealed the curvilinear system of lines of force (see Magnetism), he regarded these fragments of iron as simple indicators of a physical state in the space already in existence round the magnet.
Comte, Spencer, Bagehot, Durkheim and Giddings, for example, refer to it, if at all, only briefly and incidentally; they conceive society as an organism, or at all events as a growing whole, no one part or force being the cause of all others, and all interacting; society is not the product of any agreement or of force alone, but of a vast variety of interests, desires and needs.
The stresses produced by extraneous forces in a simple frame can be found by considering the equilibrium of the various joints in a proper succession; and if the graphical method be employed the various polygons of force can be combined into a single force-diagram.
It is not half so wonderful as the conservation of force or the indestructibility of matter...
The idea of force is one of those obscure conceptions which originate in an obscure region, in the sense of muscular power.
They ascribed all their misfortunes to the work of .a malignant faction, and believed that, if they could escape from Paris, a display of force by friendly powers would enable them to restore the supremacy of the crown.