THE "HALF-WATT" ELECTRIC LAMP

Dominion, Volume 7, Issue 2224, 10 August 1914, Page 8

THE "HALF-WATT" ELECTRIC LAMP

|] CHEAP LIGHT FOR THE MILLION l) ' Tho new "half-watt" lamp, which pr< mises to diminish the price of electrii 1- ity at least 30 per ccut., and to whic 0 briof mention was made in th >' Dominion, is the outcome of a discover '» made by Dr. W. K,'. Whitney, of Schei dctady, who, in his researches, foun h that "the tungsten filament in a lam r filled with nitrogen gas, required Jos watts to become fully incandescent tlia 1 in a vacuum. The blackening of ele< 5 trio lamps is caused by the evaporatio 1 of the tungsten, which is deposite * evenly all over the glass in the case c a vacuum bulb, hut the effect of th nitrogen-filled bulb is. to carry the eva ■ porated tungsten upwards, and doposi j it, either on tho baffle plates or in th neck of the lamp. "When the new priii ciple can he made to apply to lamps 0 low candle-power, it is anticipated, tha the consumption of electrio energy i: j private houses will be so low that i will not be worth the cost installing . nietcr to record,. and that curront wi] . bo supplied to each house at so rauc! - per month —the occupier to consume a much or as little current as he pleases The half-watt lamps (600 c.p. am . over) are now being manufactured b; ■ .all the principal lamp-maker 3, and ii English cities the old lamps are beinj rapidly displaced by the new one 3.. The manner in which the new half [ watt lamp reduces the consumption 0 electricity (without any loss of eiß ciency) is shown by the; following table ■ 50' c.p. "carbon filament lamp'require; 200 watts. ' -,' 50 c.p, motal filament lamp require! 55 watts. . . [ 50 c.p. "half-watt" lamp requires 2i , watts. . i' Thus it will be seen-that instead 0: lining four watts per candle-power j ai in the old carbon filament days, on I; half a watt per candle-power is used hi the -new lamp. , The lowest-powerec lamp yet made on tlio half-watt prin ciple is the 100-watt (200-c.p.), lamp, ; number of which aro at present on the water consigned to Wellington. Highei - powered half-watt lamps are already or the local markot. We require, more home-separated cream for our local supply, and are willing tc pay the "best price, give full weight, and ' correct test to everyone of our suppliers, If you do not already supply us, give u; 0- chance to do business with you. W« •stand by . results only. Rail your'cream to St. John's Butter Factory, St. John'.' Station. Further particulars, Wanganui Fresh Food, and Ice Co., Guyton Street,— Advt. . Ever considered the advisability of'installing a water-wheel on your properly; There's a lot of power running to waste in that swift stream—enough to drive all your farm machinery. This is a good sound proposition—means money to you, Write ' for ■ particulars' A. J. Parton, Sheet Metal and Plumbing' Works, Carterton.—Advt. "Much virtue in IF," said Touchstone. Yes, IF'that scientific specific, "NAZOL" is in your home you need never fear coughs and colds. Good for young, old, or middle-aged persons.—Advt. . During 1913, 8152 French vessels, ot 8,301,122 tons register, arrived in French ports'and 21,683 veosols'of other nationalities,' registering 26,137,974 tone. The clearances from French ports during last year comprised 7275 native vessel, ol 7,481,021 tons register, and 14,31*3 foreign veseel of 18,600,400 tons. In comparison with 1912, the arrivals of vessels of all • nationalities last year were 2280 more, the increaso in tonnago being 3,734,596 tons. As to the clearaucea the increaeo in the number of ships was 1173, with a registered tonnage of .2,791,082; Taking the arrivals and clearances togother, tho principal ports of France ill 1913 ranked as follows:—Marseilles, with 8932' vessels, registering 16,265,859 tons: Cherbourg, 1956 of 9,174,406 tons; Havre, 3899 of 7,003,636 tons; Boulogne, <847 of 6,751,480 tons;, Bordeaux, 2616 of 2,962,452 tons; Dunkirk, 2253 of 2.872,323 tons; and Eouens, 3262 of 2,661,681 tons. Tho figures for Cherbourg and Boulogne include the occan-liners which call at these ports merely to embark an<l, disembark passengers and baggage. Of these, 1516 vessels of 8,977,092 tons called at, Cherbourg during 1913, and 838 vessels of 5,547,352 registered tons called at Boulogne. : WHY SUFFER FROM SCIATICA? Yes,! Why suiter? Why continue'to endure the pain and agonv? RHEUMO will cure you—it has cured thousands of sufferers speedily and effectually. Moreover, it is a rational and a scientific remedy. Excess uric acid in tho Wood is the' rual cause of/your trouble. Until that I excess uric acid is removed you will still I continue to suffer. RHEUMO acts diI rectly through the Wood and neutralises and expels the excess acid from the system. By removing the cause it completes the cure. Read what Mr. Francis M'Guire, c.o. J. Stewart, User., Barrack Hill, Napier, has to say about RHEUMO: "For two years I have been a mnrtyr to Sciatica, had a course of electric masMgp, besides going to Te Arolia for the baths. I have now been in Napier seven. weeks, taking hot'salt water baths, but all in rain. I tried almost every supposed remedy until a week ago a friend, and one-time sufferer, persuaded 1110 to tr? RHEUMO. I have taken only two bottles nnd the result is simply wonderful; can now walk and stoop with ease." When practice tiros supports theory, can you hesitate about RHEUMO? 2~s. Gel. and 4s. Gd. bottle.—Advt.