Friction Stir

Famous quotes containing the words friction and/or stir:

“We have got onto slippery ice where there is no friction and so in a certain sense the conditions are ideal, but also, just because of that, we are unable to walk. We want to walk so we need friction. Back to the rough ground!”
—Ludwig Wittgenstein (1889–1951)

“Some say that ever ‘gainst that season comes
Wherein our Saviour’s birth is celebrated,
This bird of dawning singeth all night long,
And then they say no spirit dare stir abroad,
The nights are wholesome, then no planets strike,
No fairy takes, nor witch hath power to charm,
So hallowed, and so gracious, is that time.”
—William Shakespeare (1564–1616)