The Ethics of Deference Part 7 potx
Tài liệu The elements of style part 7 pptx
... avoiding 23-24, 72 worth while/worthwhile 64 would for repeated action 64-65 sparing use of 20 writing benefits of 70 difficulties with 69 ear for 77 -78 principles of 15-33 style of 66-85 ... 21-22 dialect 78 -79 dialogue adverbs in 75 attributives in 31, 75 , 76 dates and numbers in 35 paragraphing of 16 sentence fragment in 7 tense in 31 different th...
Ngày tải lên: 20/01/2014, 20:20
Electric Vehicles The Benefits and Barriers Part 7 potx
... Max&Min. On the base of this block it is possible to calculate the average maximal value of the superimposed component of the voltage excitation so that the outcome is the module of system impedance ... Vehicles – The Benefits and Barriers 126 After the DC regime expires, the initial WHILE loop starts, in which the current value of the alternate volt...
Ngày tải lên: 19/06/2014, 12:20
An Encyclopedia of the History of Technology part 1 potx
... age 22 The fourth age: intimations of automation 27 The fifth age: the expansion of steam 31 The sixth age: the freedom of internal combustion 37 The seventh age: electrons controlled 40 PART ONE: ... technology 2 The archaeological ages 4 The seven technological ages of man 5 The first age: man, the hunter, masters fire 5 The second age: the farmer, the...
Ngày tải lên: 04/07/2014, 01:20
An Encyclopedia of the History of Technology part 7 pdf
... well below their melting point to soften them after cold forging, or in the furnaces where crystals were melted together. Apart from gold, silver and the other noble metals, copper is the only ... north of the alluvial plains where the civilizations of the Tigris and Euphrates subsequently developed. Much use was then made of native copper which was hammered directly into sm...
Ngày tải lên: 04/07/2014, 01:20
An Encyclopedia of the History of Technology part 25 potx
... countries that border the eastern Mediterranean, in the centuries before the birth of Christ. The harnessing of these natural forms of power grew out of the difficulties of grinding grain by hand ... number of larger towns. The use of slaves or servants to grind the grain for the family became too expensive, and there was a real need to increase the production...
Ngày tải lên: 04/07/2014, 01:20
An Encyclopedia of the History of Technology part 37 potx
... characteristic of the Carnot cycle. A particular feature of the Stirling engine is the use of two cylinders and two pistons. One of these, the displacer piston, serves to transfer the working substance ... designed to change the direction of motion of the steam, and, in the reaction steam turbine, the pressure of the steam. Because the linear speed of th...
Ngày tải lên: 04/07/2014, 01:20
An Encyclopedia of the History of Technology part 38 potx
... was that the magnetic field of the extra coils compensated for the distortion of the magnetic field caused by the current in the armature. In the simple generator, without compounding, the brush ... it turned it magnetized the soft iron, first in one direction then in the other, and at each change of the direction of magnetization a current was induced in the c...
Ngày tải lên: 04/07/2014, 01:20
An Encyclopedia of the History of Technology part 43 potx
... courage the opportunities of a good life farming in the West competed with the prospect of factory work in the East. This created the high level of wages offered and the need to build skill into the machine ... 1849. By 18 97 bicycles were being produced at the rate of two million a year in the USA before the market collapsed when the era of the automobile a...
Ngày tải lên: 04/07/2014, 01:20