欧宝娱乐

“When our thoughts are stammering in our mind, and memorial failure dumbs down our passion for life, a deep dive in the brainwaves can be the lever that lifts our sense of self. ("Walking down the memory lane" )”
― Erik Pevernagie

“...I'm not in control and without a firm spot, like Archimedes I can't move the world - let alone your heart..”
― John Geddes, A Familiar Rain

“For many years I have been saying that I would like to write a book (or series of books) called Physics for Mathematicians. Whenever I would tell people that, they would say, 鈥淥h good, you're going to explain quantum mechanics, or string theory, or something like that鈥�. And I would say, 鈥淲ell that would be nice, but I can't begin to do that now; first I have to learn elementary physics, so the first thing I will be writing will be Mechanics for Mathematicians鈥�. So then people would say, 鈥淎h, so you're going to be writing about symplectic structures鈥�, or something of that sort. And I would have to say, 鈥淣o, I'm not trying to write a book about mathematics for mathematicians, I'm trying to write a book about physics for mathematicians鈥�; 鈥︹€� it's elementary mechanics that I don't understand. 鈥� I mean, for example, that I don't understand this 鈥� lever.
... Most of us know the law of the lever, but this law is simply a quantitative statement of exactly how amazing the lever is, and doesn't give us a clue as to why it is true, how such a small force at one end can exert such a great force at the other.
Now physicists all agree that Newton's Three Laws are the basis from which all of mechanics follows, but if you ask for an explanation of the lever in terms of these three laws, you will almost certainly not get a satisfactory answer.”
― Michael Spivak

“National identity acts as a consumer lever to manipulate the emotions of the masses, for the purposes of power regulation and the fulfillment of agenda”
― Bryant McGill, Voice of Reason

“... who can forget the amazement of a child balancing an adult on a see-saw, simply by being placed at the right position. How could this be? Where did all that extra force come from!?

The only wonder nowadays is that a physics student is unlikely to produce a satisfactory answer to this question. Perhaps we will be offered a few mumblings about moments, force times distance, laws of the lever perhaps even the "principle of virtual work". But we probably won't get an answer that seems to explain where that extra force comes from; and it is highly unlikely that we will get an answer that begins by establishing principles about rigid bodies, even though the rigidity of the lever is an absolute necessity for it to work.

In fact, the whole path from Newton's Laws, which basically concern "point masses", to bodies whose shape and extent are significant, is often rather dubiously traversed, even though elementary physics courses blithely pose such problems of the most diverse sorts.”
― Michael Spivak, Physics for Mathematicians: Mechanics I

“Body is morning dew that shines to the rise of the hands. (Corps est ros茅e du matin - Qui brille au lever des mains.)”
― Charles de Leusse

“Given the right lever you can move a planet.”
― Frank Herbert, Dune

“You can't move a rock by your self. You just need a lever to change the direction of that rock.
That is smart work.”
― M.Rehan Behleem

“Nous sommes faits pour tomber par terre et, toujours, dans la lutte, nous grandir puis finir par nous relever.”
― Soeur Emmanuelle, Mon testament spirituel

“Do you have a fulcrum large enough, and a lever long enough to shift human nature?”
― J. Earp