Bulletin of the University of Wisconsin: Engineering series, Volume 8, Issues 1-7

Front Cover
The University, 1917
 

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Contents

Electric intensity or electric force or potential gradient
357
Lines and tubes of electric intensity or force 22 Relation between the potential difference between two conductors and the charge on the conductors
358
Mutual elastance between two condensers
359
Energy stored in a condenser
360
Energy stored in two condensers having mutual elastance
361
Mechanical force between two charged conductors constituting a condenser
362
Permittivity and elastivity
369
Dielectric strength or disruptive gradient 35 The electric convection conduction and displace ment currents
370
Current density 37 Kirchhoffs first law 38 Current manifestations
372
Coulombs law of force between magnetic poles 40 Permeability 41 Unit magnetic pole 42 Magnetic intensity 43 Electric current
373
Faradays laws of electrolysis Electrochemical equivalent of a substance 45 Causes of differences of potential Electromotive force and voltage
374
Relation between the conduction current and the impressed electromotive force 47 Heat developed in a conductor by the passage of a current Joules
376
Resistance and conductance 49 Resistance of a conductor in terms of its dimensions
377
Resistivity and conductivity 51 The magnetic field accompanying a current
378
Amperes rule for the posi tive direction along a line of force
379
Mathematical convention defining positive direc tions around and through a circuit
380
Superposition of electric fields 55 Experimental basis for the first law of circuitation
382
Fuel conservation by the economical combustion of soft
425
Introduction
431
Combustion
449
Firing for power plants
459
Firing for domestic heating
465
The smoke problem
475
Publications on the burning of soft coal
489

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Page 377 - As a unit of resistance, the international ohm, which is based upon the ohm equal to 10" units of resistance of the CGS system of electromagnetic units, and is represented by the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of the length of 106.3 centimetres.
Page 345 - Ampere, which is one-tenth of the unit of current of the CGS system of electromagnetic units and which is represented sufficiently well for practical use by the unvarying current which, when passed through a solution of nitrate of silver in water, in accordance with a certain specification, deposits silver at the rate of 0.001118 of a gramme per second.
Page 246 - ... in Engineering. Pp. 45, pi. 1, May, 1895. Price 35 cents. No. 6. Railway Signaling, by W. McC. Grafton, CE, Special University Lecturer. Pp. 38, July, 1895. Price 35 cents. No. 7. Emergencies in Railroad Work, by LF Loree, M. Am. Soc. CE, Special University Lecturer. Pp. 42, December, 1895. Price 35 cents. No. 8. Electrical Engineering in Modern Central Stations, by Louis A. Ferguson, SB, Special University Lecturer. Pp. 33, April, 1896. Price 35 cents. No. 9. The Problem of Economical Heat,...
Page 485 - Section 8. It shall be unlawful for the owner, lessee, or operator of any existing plant, or of any plant about to be constructed, for the production of power or heat, to proceed with the construction, reconstruction, or alteration of such plant until plans and specifications for such work shall have been submitted to the smoke inspector, approved by him, and a permit for the prosecution of such work Issued.
Page 350 - ... proportional to the product of their charges and inversely proportional to the square of the distance between them; and this law is valid whether the charges are equal or unequal.
Page 484 - SEC. 2. The smoke inspector shall be appointed by the mayor by and with the advice of the city council and shall perform the duties of his office until removed from office or until his successor is appointed.
Page 348 - In the interest of clear thinking, an attempt has been made in this text to distinguish between the four types of relations dealt with, namely : 1. Relations which are matters of definition. 2. Relations which have been determined purely by observation and experiment. 3. Relations which have been deduced from fundamental experimental relations for the values of newly defined quantities. 4. Relations which are generalizations embodying and based upon general experience or upon extended experimental...
Page 485 - ... such room, apartment, basement or other portion of such building wherein such steam plant or apparatus is to be used, from rising to a point higher than 120 degrees Fahrenheit, and sufficient also to provide that the atmosphere of any such apartment, wherein such apparatus may be located, may be entirely renewed every ten minutes.
Page 345 - The International Ohm is the resistance offered to an unvarying electric current by a column of mercury at the temperature of melting ice, 14.4521 grams in mass, of a constant cross-sectional area and of a length of 106.300 centimeters.
Page 467 - House heaters must have provision for overdraft through fire door or around top of fire pot. "(13) The fuel pot must be kept full with fire surface at level of fire door; let ashes accumulate on (not under) the grate In mild weather. Grates must not be shaken too long and violently, and clinkers must be removed with as little disturbance of the fire as possible. Never shake or disturb a very low fire until you have added, and ignited a little fresh fuel. "(14) Anticipate the heating demand by firing...

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