THREE:The art of keeping reasonably clean even in a machine shop is worth studying; some men are greased from head to foot in a few hours, no matter what their work may be; while others will perform almost any kind of work, and keep clean without sacrificing convenience in the least. This difference is the result of habits readily acquired and easily retained.(1.) What should determine the social rank of industrial callings?(2.) Why have the physical sciences and mechanic arts achieved so honourable a position?(3.) How may the general object of the engineering arts be described?(4.) What is the difference between science and art as the terms are generally employed in connection with practical industry?
FORE:"Come now quietly," I said; "so much the sooner you will be back with your laddie."
Aenean pulvinar ac enim et posuere. Quisque sollicitudin faucibus orci, a ultrices tortor. Nulla vulputate justo at metus ornare convallis. Praesent eleifend, libero eget ultrices auctor
In sit amet sapien eros. Integer in tincidunt velit. Ut sapien est, molestie sit amet metus sit amet, malesuada gravida ex. In hac habitasse platea dictumst. Aliquam iaculis feugiat ipsum, nec ultricies ipsum scelerisque id Praesent lacinia tempor nisi, id rhoncus nisi scelerisque id. I nteger eu sem ipsum
FORE:And how! Jeff nodded. Now, that-there Everdail necklace that was in his side of the family for generationsthat wasnt took out of the safe-deposit box once in a lifetime, hardly. Most generally the missus wore a good paste imitation.
In sit amet sapien eros. Integer in tincidunt velit. Ut sapien est, molestie sit amet metussit amet, malesuada gravida ex. In hac habita sse platea dictumst. Aliquam iaculis feugiat
Read more
FORE:3. The force of the water is greatest by its striking against planes at right angles to its course.A proof of this last proposition is found in the fact that a thorough latheman will perform nearly as much work and do it as well on an old English lathe with plain screw feed, as can be performed on the more complicated lathes of modern construction; but as economy of skill is sometimes an equal or greater object than a saving of manual labour, estimates of tool capacity should be made accordingly. The main points of a lathe, such as may most readily affect its performance, are firsttruth in the bearings of the running spindle which communicates a duplicate of its shape to pieces that are turned,second, coincidence between the line of the spindle and the movement of the carriage,third, a cross feed of the tool at a true right angle to the spindle and carriage movement,fourth, durability of wearing surfaces, especially the spindle bearings and sliding ways. To these may be added many other points, such as the truth of feeding screws, rigidity of frames, and so on, but such requirements are obvious.
In sit amet sapien eros. Integer in tincidunt velit. Ut sapien est, molestie sit amet metussit amet, malesuada gravida ex. In hac habita sse platea dictumst. Aliquam iaculis feugiat
Read more
FORE:A cubic inch of water, by taking up a given amount of heat, is expanded to more than five hundred cubic inches of steam, at a pressure of forty-five pounds to the square inch. This extraordinary expansion, if performed in a close vessel, would exert a power five hundred times as great as would be required to force the same quantity of water into the vessel against this expansive pressure; in other words, the volume of the water when put into the vessel would be but one five-hundredth part of its volume when it is allowed to escape, and this expansion, when confined in a steam-boiler, exerts the force that is called steam-power. This force or power is, through the means of the engine and its details, communicated and applied to different kinds of work where force and movement are required. The water [33] employed to generate steam, like the engine and the boiler, is merely an agent through which the energy of heat is applied.The year 155 B.C. was signalised by an important event, if not in the history of ideas, at least in the history of their diffusion. This was the despatch of an embassy from the Athenian people to the Roman Senate, consisting of three philosophers, the heads of their respective schoolsCarneades the Academician, Critolaus the Peripatetic, and Diogenes the Stoic. Philosophic teaching, once proscribed at Athens, had, at the time of which we are speaking, become her chief distinction, and the most honourable profession pursued within her precincts. It was, then, as natural that an important mission should be confided to the most eminent representatives of the calling in question as that high ecclesiastics should be similarly employed by Rome in later ages, or that German university towns should send professors to represent their interests in the imperial Diet. But the same fate that befalls an established religion had befallen an established philosophy. An attempt to impose restrictions on the liberty of teaching had, indeed, been successfully resisted, and the experiment was never repeated.212 Nevertheless, the teachers themselves lost as much in true dignity as they gained in affluence and popular estimation. In all probability, the threat of death would not have induced Socrates to undertake the task which was, apparently, accepted without121 compulsion and as an honourable duty by his successors. The Athenians had made an unprovoked raid on the town of Oropus; the affair had been referred to arbitration; and the aggressors had been sentenced to pay a fine of 500 talents. It was to obtain a remission of this sentence that the three Scholarchs were sent on an embassy to the Roman Senate.
In sit amet sapien eros. Integer in tincidunt velit. Ut sapien est, molestie sit amet metussit amet, malesuada gravida ex. In hac habita sse platea dictumst. Aliquam iaculis feugiat
Read more
