 Costs are based on the following prices: candles, 12 cents per pound; kerosene, 15 cents per gallon; gas, $1 per 1,000 cubic feet; electricity, 10 cents per kilowatt hour. The solid lines represent cost of fuel or of current, the shaded parts the cost...  Measurements for the Household - Side 34av Massachusetts. Department of Weights and Measures - 1917 - 53 siderUten tilgangsbegrensning - Om denne boken
 | 1915 - 854 sider
...Electric • Tungsten Electr/c* 5 10 IS 2O 25 30 35 Cost of IOOO candle-hours //? cents 40 FIG. 28. — Relative cost of producing a given amount of light by •various illuminants at usual prices Costs arc based en the following prices: Candles, 11 cents per pound; kerosene, 15 cents per gallon; gas,... | |
 | 1918 - 584 sider
...impressively the relative costs of producing a given amount of light by various illuminants at the usual prices : Candles, 12 cents per pound; kerosene, 15 cents per gallon: gas. $1 per thousand cubic feet; electricity. 10 cents per kilowatthour. The solid lines represent cost of fuel... | |
 | Edgar Flandreau Van Buskirk, Edith Lillian Smith - 1919 - 440 sider
...'Gem' Electric • TungsfenEle OS 10 15 20 25 30 35 43 Cost of IOOO candle-hoars in cents FIG. 131. Relative cost of producing a given amount of light...cents per pound; kerosene, 15 cents per gallon; gas, $i per 1,000 cubic feet; electricity, 10 cents per kilowatt hour. The solid lines represent cost of... | |
 | Martha Van Rensselaer, Flora Rose, Helen Canon - 1919 - 752 sider
...Ele-tric.Tunvten tlectri-. 0 5 io ^*5 W »5 JO }9 40 Cost jfwoo candle -hour* In centi. Fio. 48. — Relative cost of producing a given amount of light by various illuminants at usuul prices. Costs are based on the following prices: Candles, 12 cents a pound; kerosene, 15 cents... | |
 | Edgar Alden Bedford - 1921 - 440 sider
...been worked out, showing the relative cost of producing a certain amount of light. Costs have been based on the following prices : Candles, 12 cents...per pound ; kerosene, 15 cents per gallon ; gas, $1 .00 per 1000 feet; and electricity, 10 cents per kilowatt hour. Problem 3. Why shades and reflectors... | |
 | Edgar Alden Bedford - 1921 - 436 sider
...been worked out, showing the relative cost of producing a certain amount of light. Costs have been based on the following prices : Candles, 12 cents per pound; kerosene, 15 cents per gallon; gas, $1.00 per 1000 feet; and electricity,. 10 cents per kilowatt hour. Problem 3. Why shades and reflectors... | |
 | William D. Henderson - 1921 - 590 sider
...Electric, carbon Electric, tungsten I 10 15 20 25 30 Coat of 1000 candle-hours in cents 35 40 FIG. 323. — Relative cost of producing a given amount of light by various illuminants gas lamp, and inverted mantle gas lamp is shown in Fig. 324, together with the distribution of the... | |
 | Helen J. Kiggen - 1922 - 424 sider
...The relative costs of producing light by methods usually employed are shown in the figure above. 1. Costs are based on the following prices: candles,...cents per pound; kerosene, 15 cents per gallon; gas $1.00 per 1000 cu. ft. ; electricity, 10 cents per kilowatt hour. The solid lines represent cost of... | |
 | Walter George Whitman - 1924 - 458 sider
...Cost of 1000 candle-hours in cents FIG. 207. — Comparison of cost of lighting by different means. Costs are based on the following prices: Candles,...$1 per 1,000 cubic feet; electricity, 10 cents per kilowatthour. The solid lines represent cost of fuel or of current, the shaded parts the cost of the... | |
 | Helen Canon, Martha Van Rensselaer - 2005 - 721 sider
...Tonwten Electric. — 4 a To Ts ia> £5 30 ss '40 Coat <f too® candle -bows in cent*. Fio. 48. — Relative cost of producing a given amount of light...are based on the following prices: Candles, 12 cents a pound; kerosene, 15 cents a gallon; gas, $1 for 1000 cubic feet; electricity 10 cents a kilowatt... | |
| |
