 | Edward Charles Frome - 1840 - 232 pages
...inches from the bottom of the pot. Before using a thermometer for this purpose, it is necessary to ascertain if the boiling point is correctly marked...temperature of the air at the time should be noted. A few minutes will suffice for the whole operation ; and where very great accuracy is not required,... | |
 | John Gregory - 1843 - 350 pages
...from the bottom of the pot. Before a thermometer is used for this purpose, the boiling point must be correctly marked for the level of the sea by a number of careful observations, noting the difference, if any, as an index error. The inventor recommends to have two or more thermometers,... | |
 | Basil Jackson - 1847 - 410 pages
...inches from the bottom of the pot. Before using a thermometer for this purpose, it is necessary to ascertain if the boiling point is correctly marked...temperature of the air at the time should be noted. A few minutes will suffice for the whole operation ; and where very great accuracy is not required,... | |
 | 1873 - 1078 pages
...Holes for the escape of steam. The boiling point for the level of the sea should be correctly marked by a number of careful observations, and the difference, if any, must be notfd u an index error. These thermometers are very useful in ascertaining heights where ftrict accuracy... | |
 | Park Benjamin - 1878 - 994 pages
...holes for the escape of steam. The boiling-point for the level of the sea should be correctly marked by a number of careful observations, and the difference, if any, must be noted as an index error. the difference of one degree in the temperature at which water boils indicates a change of level of... | |
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... the thermometer fitted into the aperture in the lid of the sliding tube, by means of a collar of cork ; and the tin sliding tube pushed up or down to admit of the bulb of the thermometer being about two inches from the bottom of the pot. Before using... 