![If heat were the affecting force, direct indications of its presence could be found which would not make use of geometry as an indirect method. ...direct evidence for the presence of heat is based on the fact that it affects different materials in different ways. ...The forces... which we have introduced... have two properties: (a) They affect all materials in the same way. (b) There are no insulating [or isolating] walls. ...the definition of the insulating wall may be added here: it is a covering made of any kind of material which does not act upon the enclosed object with forces having property a. Let us call the forces which have the properties a and b universal forces; all other forces are called differential forces. Then it can be said that differential forces, but not universal forces, are directly demonstrable. (Hans Reichenbach)](https://cdn.quotesdtb.com/img/quotes_images_webp/16/hans-reichenbach-act-affect-429316.webp)
If heat were the affecting force, direct indications of its presence could be found which would not make use of geometry as an indirect method. ...direct evidence for the presence of heat is based on the fact that it affects different materials in different ways. ...The forces... which we have introduced... have two properties: (a) They affect all materials in the same way. (b) There are no insulating [or isolating] walls. ...the definition of the insulating wall may be added here: it is a covering made of any kind of material which does not act upon the enclosed object with forces having property a. Let us call the forces which have the properties a and b universal forces; all other forces are called differential forces. Then it can be said that differential forces, but not universal forces, are directly demonstrable.
Hans ReichenbachRelated topics
act affect based call covering definition demonstrable different differential direct evidence fact found force geometry having heat indirect kind material method object presence property say universal use wall way forces waysRelated quotes
Comets are flying around the solar system. As they near the sun, they develop a tail as material is blown off by the solar wind. Most astronomers agree that comets cannot be more than 10,000 years old. They would have completely disappeared by now. Some scientists have recognized this as a serious problem for the theory that the earth is billions of years old, so they have proposed a new theory that new comets are constantly being introduced into the solar system to replace the old ones that burn out. They say they are coming from the "Oort Cloud.” No one has ever seen this Oort cloud, Oort never saw the Oort cloud! There is NO scientific evidence for its existence, but in their mind, this answers the serious problem the short lives of comets creates. There is a simpler answer, of course: the universe is NOT billions of years old!
Kent Hovind
My father's moral inculcations were at all times mainly those of the "Socratici viri;" justice, temperance (to which he gave a very extended application), veracity, perseverance, readiness to encounter pain and especially labour; regard for the public good; estimation of persons according to their merits, and of things according to their intrinsic usefulness; a life of exertion in contradiction to one of self-indulgent sloth. These and other moralities he conveyed in brief sentences, uttered as occasion arose, of grave exhortation, or stern reprobation and contemp. But though direct moral teaching does much, indirect does more; and the effect my father produced on my character, did not depend solely on what he said or did with that direct object, but also, and still more, on what manner of man he was.
John Stuart Mill
Contrary to several conflicting stories, I got the name "Count" right in Kansas City in 1936 while at the Reno Club. I was known as Bill Basie at that time. One night, while we were broadcasting, the announcer called me to the microphone for those usual few words of introduction. He commented that Bill Basie was a rather ordinary name, and further that there were a couple of well-known bandleaders named Earl Hines and Duke Ellington. Then he said, "Bill, I think I'll call you Count Basie from now on. Is that all right with you?" I thought he was kidding, shrugged my shoulders and replied, "OK." Well that was the last time I was ever introduced as Bill Basie. From then on, it was Count Basie, and I never did lose that nickname. It's funny the way those things will stick.
Count Basie
In its most general form and from the point of view of physics, love is the internal, affectively apprehended, aspect of the affinity which links and draws together the elements of the world, centre to centre. This is how it has been understood by the great philosophers from Plato, the poet, to Nicolas of Cusa and other representatives of frigid scholasticism. Once this definition has been accepted, it gives rise to a series of important consequences. Love is power of producing inter-centric relationship. It is present, therefore (at least in a rudimentary state), in all the natural centres, living and pre-living, which make up the world; and it represents, too, the most profound, most direct, and most creative form of inter-action that it is possible to conceive between those centres. Love, in fact, is the expression and the agent of universal synthesis.
Pierre Teilhard de Chardin
Although there is no study which presents so simple a beginning as that of geometry, there is none in which difficulties grow more rapidly as we proceed, and what may appear at first rather paradoxical, the more acute the student the more serious will the impediments in the way of his progress appear. This necessarily follows in a science which consists of reasoning from the very commencement, for it is evident that every student will feel a claim to have his objections answered, not by authority, but by argument, and that the intelligent student will perceive more readily than another the force of an objection and the obscurity arising from an unexplained difficulty, as the greater is the ordinary light the more will occasional darkness be felt. To remove some of these difficulties is the principal object of this Treatise.
Augustus De Morgan
