Some articles on forces:
... are only those produced during the application of external forces and the consequent deformation of the body in other words, relative changes in deformation are ... A body is considered stress-free if the only forces present are those inter-atomic forces (ionic, metallic, and van der Waals forces) required to hold the body ... dynamics, the motion of a material body is produced by the action of externally applied forces which are assumed to be of two kinds surface forces and body forces ...
Famous quotes containing the words act and/or forces:
“Since belief is measured by action, he who forbids us to believe religion to be true, necessarily also forbids us to act as we should if we did believe it to be true.”
—William James (18421910)
“When we are in love, the sentiment is too great to be contained whole within us; it radiates out to our beloved, finds in her a surface which stops it, forces it to return to its point of departure, and it is this rebound of our own tenderness which we call the others affection and which charms us more than when it first went out because we do not see that it comes from us.”
—Marcel Proust (18711922)