#friction

But heat can also be produced by the friction of liquids, in which there could be no question of changes in structure, or of the liberation of latent heat. ↗

— Hermann von Helmholtz

#changes #could #friction #heat #latent

Heat can also be produced by the impact of imperfectly elastic bodies as well as by friction. This is the case, for instance, when we produce fire by striking flint against steel, or when an iron bar is worked for some time by powerful blows of the hammer. ↗

— Hermann von Helmholtz

#also #bar #blows #bodies #case

It's not the work which kills people, it's the worry. It's not the revolution that destroys machinery it's the friction. ↗

— Henry Ward Beecher

#friction #kills #machinery #people #revolution

I do remember the whole thing as being very argumentative, hot blooded... a permanent state of friction between Jon and Chris, Chris and me, me and Jon. ↗

— Bill Bruford

#between #blooded #chris #friction #hot

It is our grave mistake that for many years we neglected pro-Western groups in order to avoid any friction with the existing rulers. ↗

— Jose Maria Aznar

#avoid #existing #friction #grave #groups

They're keeping friction going between people from the East and the West. One thing we all got in common is your color, which is Black and Latino, which is our family. ↗

— Afrika Bambaataa

#black #color #common #east #family

A gem cannot be polished without friction, nor a man perfected without trials. ↗

— Lucius Annaeus Seneca

#friction #gem #man #nor #perfected

Change means movement. Movement means friction. Only in the frictionless vacuum of a nonexistent abstract world can movement or change occur without that abrasive friction of conflict. ↗

— Saul Alinsky

#change #conflict #friction #means #movement

Iteration, like friction, is likely to generate heat instead of progress. ↗

— George Eliot

#generate #heat #instead #like #likely