 It is therefore evident that the great thing to be aimed at is an absolutely uniform source of light. In the ordinary process of photometry the standard used is a candle, defined by Act of Parliament as a "sperm candle of six to the pound, burning at...  Proceedings of the Royal Society of London - Page 358by Royal Society (Great Britain) - 1869Full view - About this book
 | John Henry Pepper - 1869 - 722 pages
...practice of photometry the standard used is a candle defined by Act of Parliament " as a sperm candle of six to the pound, burning at the rate of 120 grains per hour." .This standard would be a very simple one if every candle could be made alike, but it unfortunately happens... | |
 | Edmund Burke - 1869 - 672 pages
...In ordinary photometry the standard used is a candle, defined by Act of Parliament (!) as a " sperm of six to the pound, burning at the rate of 120 grains per hour." The performance of such a rude test could hardly be hut, what it generally was, fallacious ; for candles,... | |
 | 1869 - 348 pages
...on. In testing the quality of gas, the standard candle defined by Act of Parliament is a sperm candle of six to the pound, burning at the rate of 120 grains per hour. From such a standard, we get the terms " twelve candle gas," " fourteen candle gas," &c. Mr. Sugg,... | |
 | British Association for the Advancement of Science - 1870 - 844 pages
...on. In testing the quality of gas, the standard candle defined by Act of Parliament is a sperm candle of six to the pound burning at the rate of 120 grains per hour. From such a standard we get the terms " la-caudle gas," " 14-eandle pvis," &c. Mr. Sugg, in his ' Gas... | |
 | Incorporated Gas Institute, London - 1870 - 142 pages
...public, and which is inserted in all Acts of Parliament relating to gas. That standard is a sperm candle of six to the pound, burning at the rate of 120 grains per hour. Naturally nothing can be more easy of comprehension to the British public than this, that a burner... | |
 | George Farrer Rodwell - 1871 - 620 pages
...and so on. In testing the quality of gas the standard defined by Act of Parliament is a sperm candle of six to the pound, burning at the rate of 120 grains per hour. From such a standard we get the terms " 12-candle gas," " 14-candle gas," &c. ; but, as Mr. Sugg has... | |
 | 1872 - 268 pages
...already stated, the standard light in this country is that produced by a sperm candle, of the size of six to the pound, burning at the rate of 120 grains of sperm per hour. This standard is without doubt defective. It is difficult, if not impossible, to... | |
 | American Gas Light Association - 1905 - 656 pages
...a flame giving an amount of light t%venty times as great as that given by the standard sperm candle of six to the pound burning at the rate of 120 grains per hour. Different forms of burners are used in different localities as the standards for the purpose of determining... | |
 | 1876 - 370 pages
...In England, since the year 1852, the parliamentary standard of comparison has been a sperm candle, of six to the pound, burning at the rate of 120 grains per hour. As the result of an elaborate series of experiments conducted by Professors Graham, Brande, JT Cooper,... | |
 | 1878 - 714 pages
...sperm candle with which the gas is compared is one defined in the Act of Parliament as a " sperm candle of six to the pound, burning at the rate of 120 grains per hour." I will first of all give the results of the testing of argand burners. The argand burner when properly... | |
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