ONE:It may be said that the One is itself a mystical conception, involving a reversal of all our ordinary beliefs. The universe is a vast multiplicity of objects, held together, if you will, by some secret bond of union possibly related to the personal unity of consciousness, but still neither lost nor confused in its identity. Precisely; but Plotinus himself fully admits as much. His One is the cause of existence, not existence itself. He knows just as well as we do, that the abstract idea of unity has no reality apart from the mind. But if so, why should he associate it, in the true mystical style, with the transports of amorous passion? The question is pertinent, but it might be addressed to other Greek systems as well. We must remember that Plotinus is only commenting and enlarging on Plato. In the Republic also, the Idea of Good is described as transcending the existence and the knowledge which it produces,465 and in the Symposium, the absolute self beautiful, which seems to be the Good under another name, is spoken of in terms not less passionately enthusiastic than any applied by Plotinus to the vision of the One.466 Doubtless the practical sense of the great Attic master did not desert him even here: the object of all thought, in its widest sweep and in its highest flight, is to find room for every possible expansion of knowledge, for every possible elevation of life. Plotinus was a stranger to such broad views; but in departing from Plato, as usual he follows Aristotle. The absolute self-thinking thought of the Stagirite is, when we examine it closely, only one degree less chimerical than the Neo-Platonic unification. For it means consciousness of self without the314 correlative consciousness of a not-self, and as such, according to Aristotle, it affords an eternal felicity equal or superior to the best and happiest moments of our sensitive human life. What Plotinus does is to isolate personal identity from reason and, as such, to make it at once the cause and the supreme ideal of existence. This involves two errors: first a false abstraction of one subjective phenomenon from the sum total of conscious life; and, secondly, an illegitimate generalisation of this abstraction into an objective law of things. But in both errors, Aristotle had preceded him, by dissociating reason from all other mental functions, and by then attributing the whole cosmic movement to the love which this isolated faculty of reason, in its absolute self-existence, for ever inspires. And he also set the example of associating happiness, which is an emotional state, with an intellectual abstraction from which emotion is necessarily excluded.Nothing, as Friedl?nder observes, shows so well what intense credulity prevailed at this time, with reference to phenomena of a marvellous description, as the success obtained by a celebrated impostor, Alexander of Abonuteichus, whose adventurous career may still be studied in one of Lucians liveliest pieces. Here it will be enough to mention225 that Alexander was a clever charlatan of imposing figure, winning manners, and boundless effrontery, who established himself in Abonuteichus, a small town in Paphlagonia, on the southern shore of the Black Sea, where he made a trade of giving oracles in the name of Asclpius. The god of healing was represented for the occasion by a large tame serpent fitted with a human head made of painted canvas and worked by horsehair strings. Sometimes the oracular responses were delivered by the mouth of the god himself. This was managed with the help of a confederate who spoke through a tube connected with the false head. Such direct communications were, however, only granted as an exceptional favour and for a high price. In most instances the answer was given in writing, and the fee charged for it only amounted to a shilling of our money. Alexander had originally fixed on Abonuteichus, which was his native place and therefore well known to him, as the seat of his operations, on account of the extraordinary superstition of its inhabitants; but the people of the adjacent provinces soon showed themselves to be nowise behind his fellow-townsmen in their credulity. The fame of the new oracle spread over all Asia Minor and Thrace; and visitors thronged to it in such numbers as sometimes to produce a scarcity of provisions. The prophets gross receipts rose to an average of 3,000l. a year, and the office of interpreting his more ambiguous responses became so lucrative that the two exegtes employed for this purpose paid each a talent a year (240l.) for the privilege of exercising it.
TWO:(1.) Describe the different modifications of screw-cutting machines.(2.) What is gained by revolving the dies instead of the rod?(3.) What is gained by expanding dies?(4.) What is the difference between screws cut by chasing and those cut on a screw-cutting machine?
A hydrocyclone (liquid cyclone) injects treatment solution into stationary equipment to perform separation, classification, and concentration, and is an innovative separator with a very simple structure and no drive unit.
Structure of a hydrocyclone (liquid cyclone)
A suspension containing fine particles of several micrometers or more is supplied to a cylindrical container circumferentially at high speed. And as a result it starts to rotate and a centrifugal force is generated. At this time a gravitational acceleration of several tens of thousands of G is generated in the circumferential direction, and thus leading to fast sedimentation and concentration of the fine particles. The separated concentration can be freely selected by changing the supply rate (supply pressure and flow rate) and the flow ratio of the outlet. Our hydrocyclone (liquid cyclone) was designed and manufactured to classify and concentrate fine particles, and so has a small element.
THREE:46
Equipment costs can be reduced.
Operating costs can be reduced.
Maintenance costs can be reduced.
Any change in raw material and product can be easily addressed.
Large amounts can be treated in a small area.
Separation and cleaning are easy because of the simple structure.
Simplified control
This equipment can be operated in synchronization with external devices.
Alarm and interlock mechanism.
THREE:It is strange, considering the simplicity of construction and the very important office filled by machines for cutting on plane surfaces, that they were not sooner invented and applied in metal work. Many men yet working at finishing, can remember when all flat surfaces were chipped and filed, and that long after engine lathes had reached a state of efficiency and were generally employed, planing machines were not known. This is no doubt to be accounted for in the fact that reciprocal movement, except that produced by cranks or eccentrics, was unknown or regarded as impracticable for useful purposes until late years, and when finally applied it was thought impracticable to have such movements operate automatically. This may seem quite absurd to even an apprentice of the present time, yet such reciprocating movement, as a mechanical problem, is by no means so simple as it may at first appear.
Classification and concentration for the manufacture of inorganic powder materials
Classification of ceramic materials
Removal of fine particles, including iron powder
Removal of fine particles from pigments
Removal of fine organic particles from solvents
Separation of starch and yeast
Removal of fine particles from high-temperature strong acid solutions
Removal of fine particles from low-temperature solutions
