Science Abstracts

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Page 199 - That chemical composition, except in so far as it affects the structure of the scale, has no direct influence on its heat-transmitting qualities.
Page 276 - It has been so clear on every point that every one present has been thoroughly carried along with the author. For myself the subject is one of extreme interest. I have never swerved from the opinion that the right system for longdistance transmission of power by electricity is the direct-current system.
Page 392 - Running charge for coal, wages, repairs, &c., analysed and separated from standing charges — Division of charges in combined lighting and traction stations analysed — Charge per unit to consumer unaffected by internal diversity factor of power load — Effect of combined diversity factor of the traction, power, and lighting loads in reducing standing charges — Ideal load needed to warrant the offering of ideal terms for current — Storage provides us with such an ideal load — Conclusions.
Page 200 - AND PAYMENT.* Payment will be made on the basis of the price named in the proposal for the coal specified therein, corrected for variations in heating value and ash, as shown by analysis, above and below the standard established by contractor in this proposal.
Page 71 - Hard-drawn copper is denned as that which will not elongate more than 1 per cent, without fracture.
Page 96 - ... with the free end of the bent transmitting antenna pointing directly away from the receiver and the current when the transmitting antenna had any other assigned azimuth. In the first set of experiments the sending antenna consisted of a double copper wire 20 feet in length having at the free end a terminal capacity plate, the wire being bent over at various heights from the ground or earthed end, so as to make a bent antenna with 1 foot vertical and 19 feet horizontal, 2 feet vertical and 18...
Page 254 - ... highest possible limit, and vice versa. Departures from condition (2) lead to a distortion in the proportions of bore and stroke. When the value of n is increased it pays to build long-stroke engines ; when the value of n is decreased the short-stroke engine has the advantage. So long as the value of n is chosen between the limits given, it is doubtful whether a designer could obtain any material advantage by adopting extreme proportions.
Page 254 - ... being explicable, in part at least, by the rapid removal of fluid from the blood by the alvine evacuations. The condition of the kidneys modifies the quantity of urine as well as its proportion of solids. Much depends upon the condition of the nervous system; vaso-motor disturbances being productive of an increase or decrease, as the case may be, in the amount of excreted urine. Thus, we have a condition of hydruria, or an excessive amount of watery secretion from the kidneys, in cases of diabetes...
Page 533 - If the two motors are wound for the same number of poles, and have the same electrical characteristics, the maximum energy current which they will take from the line when connected in cascade will be a little less than half that taken by one motor when working independently.
Page 257 - The amount of ferrous oxide present in electrolytic copper is very small, any excess over a minimum varying with different charges is quickly eliminated. The sulphur content of electrolytic copper remains practically unchanged by fire-refining.

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