The first law is the same for both light and material bodies; they both move in a straight line, as long as they are not deflected by an outside force. The second law is also the same as that governing the reflection of an elastic ball from an impenetrable surface. Mechanics shows that such a ball is reflected from such a surface so that its angle of reflection equals its angle of incidence, as observed for light. But the third law still requires a plausible explanation. The passage of light from one medium to another exhibits behavior that is totally different from a ball moving through different media.
Pierre Louis MaupertuisRelated topics
angle ball different elastic force impenetrable incidence law light line mechanics media moving move outside passage reflection second straight surface third equalsRelated quotes
Many, and I think the determining, constitutive facts remain outside the reach of the operational concept. And by virtue of this limitation this methodological injunction against transitive concepts which might show the facts in their true light and call them by their true name the descriptive analysis of the facts blocks the apprehension of facts and becomes an element of the ideology that sustains the facts. Proclaiming the existing social reality as its own norm, this sociology fortifies in the individuals the "faithless faith" in the reality whose victims they are.
Herbert Marcuse
In [Aristotle's] formal logic, thought is organized in a manner very different from that of the Platonic dialogue. In this formal logic, thought is indifferent toward its objects. Whether they are mental or physical, whether they pertain to society or to nature, they become subject to the same general laws of organization, calculation, and conclusion - but they do so as fungible signs or symbols, in abstraction from their particular "substance." This general quality (quantitative quality) is the precondition of law and order - in logic as well as in society - the price of universal control.
Herbert Marcuse
On the surface it seems that the present moment is only one of many, many moments. Each day of your life appears to consist of thousands of moments where different things happen. Yet if you look more deeply, is there not only one moment, ever? Is life ever not this moment? This one moment, now, is the only thing you can never escape from. The one constant factor in your life. No matter what happens. No matter how much your life changes. One thing is certain. Its always now. Since there is no escape from the now, why not welcome it, become friendly with it.
Eckhart Tolle
For two hundred and fifty years, from the second half of the eighteenth Century on, Capitalism was the dominant social reality. For the last Hundred years, Marxism was the dominant social ideology. Both are rapidly being superseded by a new and very different society. The new society – and it is already here – is a post-capitalist society... The center of gravity in the post-capitalist society – its structure, its social and economic dynamics, its social classes, and its social problems – is very different from the one that dominated the last two hundred and fifty years.
Henry Mintzberg
It is conceivable that animal life might have the attribute of using the heat of surrounding matter, at its natural temperature, as a source of energy for mechanical effect.... The influence of animal or vegetable life on matter is infinitely beyond the range of any scientific enquiry hitherto entered on. Its power of directing the motions of moving particles, in the demonstrated daily miracle of our human free-will, and in the growth of generation after generation of plants from a single seed, are infinitely different from any possible result of the fortuitous concurrence of atoms.
William Thomson